Multi-Tech Systems DT102, DT101-xx, DT102-xx, DT101 User Manual

Download

Data/Voice/Fax Concentrator

Desktop Models: DT101, DT102, DT101/xx, DT102/xx

Rack-Mount Models: DT101R, DT102R, DT101R/xx, DT102R/xx

Owner ’s Manual

Owner’s Manual

82052704 Revision E

DataTalker™ Series

Desktop Models: DT101, DT101/xx, DT102, DT102/xx

Rack-Mount Models: DT101R, DT101R/xx, DT102R, DT102R/xx

Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Multi-Tech Systems, Inc. reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.

Record of Revisions

Revision Description E Manual revised to incorporate minor editorial changes. All pages at Revision E.

(5/2/97) E Manual reformatted for electronic distribution. All pages remain at Revision E.

(7/30/99)

Patents

This Product is covered by one or more of the following U.S. Patent Numbers: 5.301.274; 5.309.562;

5.355.365; 5.355.653; 5.452.289; 5.453.986. Other Patents Pending.

Trademarks

Trademarks of Multi-Tech Systems, Inc. are as follows: DataTalker, LANTalker, RackTalker, and the MultiTech logo.

CompuServe is a trademark of CompuServe, Inc.

Multi-Tech Systems, Inc.

2205 Woodale Drive

Mounds View , Minnesota 55112

(612) 785-3500 or (800) 328-9717

Fax (612) 785-9874

Tech Support (800) 972-2439

BBS (612) 785-3702 or (800) 392-2432

Internet Address: http://www.multitech.com

Contents

Chapter 1 - Introduction and Description

1.1 Introduction.................................................................................................................................... 8

1.2 About This Manual......................................................................................................................... 8

1.3 Product Description ..................................................................................................................... 10

1.4 System Features ......................................................................................................................... 12

1.4.1 Voice/Fax........................................................................................................................... 12

1.4.2 Data Channel..................................................................................................................... 12

1.4.3 Composite Link .................................................................................................................. 12

1.4.4 Flow Control....................................................................................................................... 12

1.4.5 Parameter Memory ............................................................................................................ 12

1.4.6 Diagnostics ........................................................................................................................ 13

1.4.7 Operational Statistics......................................................................................................... 13

1.5 FCC Regulations for Telephone Line Interconnection ................................................................. 14

1.6 Canadian Limitations Notice........................................................................................................ 15

1.7 Specifications .............................................................................................................................. 16

1.7.1 Async Data Channel .......................................................................................................... 16

1.7.2 Sync Data Channel............................................................................................................ 16

1.7.3 System Control (Command Port)....................................................................................... 16

1.7.4 Composite Link .................................................................................................................. 16

1.7.5 Internal Modem.................................................................................................................. 17

1.7.6 Internal DSU ...................................................................................................................... 17

1.7.7 ISDN Terminal Adapter ......................................................................................................17

1.7.8 Voice/Fax Channel............................................................................................................. 17

1.7.9 Electrical/Physical.............................................................................................................. 18

Chapter 2 - Configuration

2.1 Introduction.................................................................................................................................. 20

2.2 Configuration 1 - Dial-Up Link ..................................................................................................... 21

2.3 Configuration 2 - MMH900 Series with V oice/Fax....................................................................... 25

2.4 Configuration 3 - LAN to LAN...................................................................................................... 28

2.5 Configuration 4 - PBX to PBX ..................................................................................................... 32

Chapter 3 - Front and Rear Panel Descriptions

3.1 Introduction.................................................................................................................................. 36

3.2 Indicators..................................................................................................................................... 36

3.3 Connectors .................................................................................................................................. 39

3.3.1 Frame Ground Connector (GND) ...................................................................................... 39

3.3.2 POWER Connector ........................................................................................................... 39

3.3.3 DA TA/COMMAND Connector ............................................................................................ 39

3.3.4 EXTERNAL COMPOSITE RS232C/V.35 Connector ......................................................... 39

3.3.5 VOICE/FAX CHANNEL 1 FXS Connector ......................................................................... 39

3.3.6 VOICE/FAX CHANNEL 1 FXO Connector......................................................................... 39

3.3.7 VOICE/FAX CHANNEL 1 E&M Connector ........................................................................ 40

3.3.8 DSU/T A DIGITAL Connector.............................................................................................. 40

3.3.9 MODEM LEASED Connector ............................................................................................ 40

3.3.10 MODEM DIAL-UP Connector ............................................................................................ 40

3.4 Switches and Shunts................................................................................................................... 41

3.4.1 Front Panel Switches......................................................................................................... 41

3.4.2 Power Switch ..................................................................................................................... 41

3.4.3 DIP Switch ......................................................................................................................... 42

3.4.4 RS232C/V .35 Shunt........................................................................................................... 42

Chapter 4 - Unpacking and Configuration

4.1 Introduction.................................................................................................................................. 44

4.2 Unpacking ................................................................................................................................... 44

4.3 Configuration Summary............................................................................................................... 45

4.4 Data Port Configuration Considerations ...................................................................................... 45

4.5 Voice/Fax Channel Configuration Considerations....................................................................... 46

4.6 Composite Link Configuration Considerations ............................................................................ 47

4.7 Configuration Procedure ............................................................................................................. 48

Chapter 5 - Installation

5.1 Introduction.................................................................................................................................. 56

5.2 Cabling ........................................................................................................................................ 56

5.3 V.35 Shunt ................................................................................................................................... 60

5.4 Power-On and Checkout ............................................................................................................. 61

Chapter 6 - Menus

6.1 Introduction.................................................................................................................................. 66

6.2 Configurations Menu ................................................................................................................... 66

6.2.1 Data Port Configuration ..................................................................................................... 67

6.2.2 Sync Data Port Configuration ............................................................................................ 69

6.2.3 Voice/Fax Channel Configuration ...................................................................................... 70

6.2.4 Composite Link Configuration............................................................................................ 73

6.3 Statistics...................................................................................................................................... 78

6.4 Reset Options.............................................................................................................................. 79

6.5 Diagnostic Tests .......................................................................................................................... 79

6.5.1 Loop Tests ......................................................................................................................... 80

6.6 Configure Remote Unit ................................................................................................................ 81

6.6.1 MMV8/16/32 Configuration Options................................................................................... 81

6.6.2 Quick Setup ....................................................................................................................... 82

Chapter 7 - Troubleshooting

7.1 Introduction.................................................................................................................................. 88

7.2 Importance of the Composite Link Statistics Report.................................................................... 88

7.3 Test Cables.................................................................................................................................. 89

7.4 Troubleshooting Guide ................................................................................................................ 90

7.5 Composite Link Settings - Internal DSU...................................................................................... 99

7.6 Composite Link Settings - Internal ISDN Terminal ..........................................................................

Adapter...................................................................................................................................... 100

7.7 Composite Link Settings - Internal Modem................................................................................ 101

7.8 Composite Link Settings - External Device ............................................................................... 102

7.9 Composite Link Statistics .......................................................................................................... 103

7.10 Data Port Configuration ............................................................................................................. 105

7.1 1 Voice/Fax Channel Configuration .............................................................................................. 107

7.12 Diagnostic T esting ..................................................................................................................... 109

Chapter 8 - Warranty, Service and Tech Support

8.1 Introduction.................................................................................................................................112

8.2 Limited Warranty ........................................................................................................................112

8.2.1 On-line Warranty Registration...........................................................................................1 1 2

8.3 Tech Support ..............................................................................................................................113

8.3.1 Recording DataT alker Information ....................................................................................113

8.3.2 Service..............................................................................................................................113

8.4 The Multi-Tech BBS....................................................................................................................114

8.5 About the Internet.......................................................................................................................115

Appendixes

Appendix A - ASCII Conversion Chart.....................................................................................................118

Appendix B - RS-232C Interface Specification........................................................................................119

Appendix C - Cabling Diagrams ............................................................................................................. 120

Appendix D - Flow Control Background ................................................................................................. 124

Appendix E - MMH2834 Modem S-Registers ........................................................................................ 125

Appendix F - MMH2834 Modem Commands ......................................................................................... 127

Glossary Index

Chapter 1 - Introduction and Description

DataT alker Owner’s Manual

1.1 Introduction

Congratulations! Your new Multi-T ech DataTalker™ is one of the finest data/voice/fax concentrators on the market today. The DataTalker optimizes wide area network (WAN) links by simultaneously transmitting voice and/or fax with LAN or computer data over a single phone line, digital service, or ISDN service.

The DataTalker basic model (DT101) supports one asynchronous or synchronous input data channel, one voice/fax channel, and a synchronous external composite link. Options include a second voice/fax channel (DT102) and an internal composite link modem (DT101/V34 or DT102/ V34), DSU (DT101/56 or DT102/56), or ISDN terminal adapter (DT101/IS or DT102/IS). It comes in two basic versions: a desktop version for home offices and a rack-mount version for central office applications (DT101R and DT102R models). The DataTalker is software driven using configuration menus, and is controlled by you through its command port for great flexibility and ease of operation. This Owner’s Manual will help you to install and use your DataTalker, and also serve as a valuable information resource in the future.

DATA/

COMMAND

ORIG

VOICE /

FAX 2

VOICE /

FAX 1

FXS FXO E&M FAX XMT RCV XSG RSGCOMXMT RCV FC

RSGXSGRCVXMTFA XE&MFXOFXS

101 MDM / TA

Figure 1-1. DataTalker (Desktop V ersion)

1.2 About This Manual

This manual has eight chapters. There are also several appendices at the end of the manual, most of which summarize information contained in the chapters. These appendices can be used as quick references. The information contained in each chapter is as follows:

Chapter 1 - Introduction

This chapter is an introduction to the world of multiplexing. If you already have an extensive background in multiplexing, this introduction will provide a good review.

Chapter 2 - Configuration Examples

This chapter describes DataTalker configurations and provides examples of how the DataT alker is typically used. The basic model has a synchronous or asynchronous data channel, a voice/fax channel, and a composite link supporting synchronous communications. Options include a second voice/fax channel and an internal V.34 (33.6K bps) modem, 56K bps DSU, or ISDN terminal adapter.

MultiMux

Data / Voice / Fax Concentrator

RXT FCR RD TM V35 EXT MDM DSU

COMPOSITE

LINK

STATUS

CD RCV XMT CTS 56 RTS NS OOS

101

28.8 OHDBUP

DTR

Chapter 3 - Front and Back Panel Descriptions

Chapter 3 describes the front panel indicators, back panel connections, and switches. The front panel indicators are grouped into data and command port, voice/fax channels, and composite link status. The back panel provides all cable connections.

Chapter 1 - Introduction and Description

Chapter 4 - Unpacking and Configuration

This chapter describes the contents of the shipping container; provides a customizeable configuration summary; discusses configuration considerations for the data port, voice/fax channel, and the composite link; and provides a detailed configuration procedure. The configuration procedure simplifies the process by asking questions about your application, which allows you to glide through the configuration process by configuring only the items that need to be changed.

Chapter 5 - Installation

Chapter 5 provides procedures for cabling your DataTalker, moving the V.35 shunt, applying power, and checking it out. Cabling involves a minimum of three cables. Each cable connection is explained in detail. If a V.35 interface is used, a procedure on how to move the shunt is provided. Finally, a power-on and checkout procedure is provided with some suggestions on what to do in case something goes wrong.

Chapter 6 - Menus

The DataTalker is software driven using menus, and is controlled through a command port device. This chapter describes the menus and the impact each option has on your system’s operation.

Chapter 7 - Troubleshooting

This chapter is a guide to troubleshooting your DataTalker. It contains lists of error conditions, probable causes, and suggested fixes or steps designed to isolate the failing unit in your communications network.

Chapter 8 - Service, Warranty and Tech Support

Chapter 8 provides instructions on getting service for the DataTalker at the factory; a statement of the limited warranty; information about our user bulletin board service, and space for recording information about your DataTalker prior to calling Multi-T ech's Technical Support.

DataT alker Owner’s Manual

1.3 Product Description

The DataTalker series of multiplexers has a single synchronous or asynchronous data channel, a command port, one or two voice/fax channels, and a single synchronous composite link with an internal data service unit (DSU), modem, ISDN terminal adapter, or an external synchronous link device. The DataTalker can be connected to an asynchronous device such as a PC or host computer, an external synchronous device such as a LAN router, or the composite link of an MMH900 series MultiMux. It also can be connected to telephone equipment for voice or fax traffic over your standard composite link. The DataTalker’s data port allows either synchronous or asynchronous devices to be connected to it. The command port allows you to configure your data channel, composite link, and voice mode of operation. The composite link can be configured for an internal 28.8K bps dial-up/leased line modem, an internal DSU for digital communications over a digital data service (DDS) network, or an ISDN terminal adapter for Basic Rate Interface Service. It can also be configured for external synchronous link devices. The voice/fax channel supports phone, fax, or key telephone system equipment through an FXS interface, a PBX station-side connection through an FXO interface, or a PBX trunk connection through an E&M interface. The DT101/V34 and DT102/V34 DataTalkers are dual-function models. If the user requires traditional data communications, these models provide a simple switch to enable a standalone V .34 modem mode, which supports dial-in/dial-out data communications for Internet, BBS, and other on-line access.

PSTN

Trunk

Trunk Trunk Station Station

PBX

5 7

Fax/Telephone

Data/ Command Channel

E&M

FXO

FXS

Configurations

I/O

Channel 1

CODEC

A to D D to A

EPROM

Data/Command

Processor

RAM

Analog

Digital

Analog

Digital Signal Processor

AT Commands

Serial Communications Controller

Port

RAM

Digitize Voice/fax

RAM

EPROM

Modem, DSU, or Terminal Adapter

Composite

Link

i t

PDN

Figure 1-2. Block Diagram

A simplified block diagram of the DataTalker is shown in Figure 1-2. The data channel on the top left and the voice/fax channel on the bottom left feed data to a serial communications controller that provides the path through a modem, DSU, or ISDN terminal adapter to the public data network. The data channel, voice/fax channel, and the serial communications controller are on the main printed circuit board. The internal modem, DSU, or terminal adapter is a daughter board that plugs into the main board. The data/command channel is a dual purpose channel to which a synchronous or asynchronous device can be connected when it is used in its data mode. The voice/fax channel allows you to connect a telephone, a PBX (Private Branch eXchange) extension, or a PBX E&M trunk for voice or fax communication. On the other end of the DataTalker, an internal 33.6K bps modem, 56K bps DSU, or ISDN terminal adapter provides the composite link interface to the public data network.

The data/command channel can have a terminal or PC connected to it for configuring the DataTalker. The versatility of the data/command port allows the DataTalker to be connected to a synchronous or asynchronous device in the data mode or to an asynchronous device in the command mode when the DataTalker needs to have the configuration of the data channel, voice/ fax channel, or the composite link changed. The data/command channel can be switched between data and command modes by setting a DIP switch. If the data/command channel is in data mode, it is also possible to switch to command mode by entering the escape command

+++AT<CR>.

Before you can transfer data over the channel, you must connect a terminal or PC running

Chapter 1 - Introduction and Description

communications software to the DA TA/COMMAND connector on the back panel and configure the data channel for the type of data that is going to be transferred. For example, if an asynchronous device is going to be connected to the data channel, you must set the speed of the channel, the word length, the number of stop bits, whether or not you are going to have parity checking, the flow control type, and other aspects of asynchronous data. After you have configured the data channel, remove the command port device and connect the data channel device, allowing data to be transferred from the asynchronous device to the MultiMux’s input/ output circuitry .

To operate the data channel in synchronous mode, as when connecting to a remote LAN bridge or to the composite link of an MMH900 series MultiMux, use the same DATA/COMMAND connector. The sync device you connect to the data channel must be an SLDC or HDLC device. Configure the data channel for sync channel operation with any SLDC/HDLC protocol , for internal or external clocking, and for speed. Configuration information is stored in non-volatile memory , which informs the data/command processor how data is received from the input/output (I/O) circuitry .

To set up the DataTalker for voice or fax operation, connect the VOICE/FAX CHANNEL 1 FXS connector on the back panel to a telephone or fax machine, connect the FXO connector to a PBX station circuit, or connect the E&M connector to a PBX E&M trunk. The FXS (Foreign eXchange Station) circuitry in the DataTalker allows a telephone or fax machine to be directly connected to the DataTalker. This circuitry provides a ringing voltage to the remote instrument when it detects an off-hook condition from the attached device, so that when two telephones are used, picking up one of the handsets rings the telephone at the other end. If the FXO (Foreign eXchange Office) connection is used at one end of the network and a telephone set is used at the other end of the network, the PBX provides the dial tone, and the remote user can dial a number as if locally attached to the PBX. The E&M connector is used to link two PBXs.

Before a voice or fax operation can take place, the DataTalker must be configured for the types of local and remote connections and for the line conditioning for the voice circuitry . The voice/fax channel is configured in the same way as the data channel: by connecting a command port device to the DA TA/COMMAND connector on the back panel and setting the voice/fax configurations. Once the channel is configured, the analog to digital conversion circuitry accepts the incoming analog signal and converts it to a digital representation of the signal. The digitized signal is stored in the dual-port RAM for transmission to the serial communications controller when it requests the dual-port RAM for data. The serial communications controller conditions the digitized voice or fax data for transmission to the composite link.

In order to transfer data from the serial communications controller over the composite link to the remote site, the composite link must be configured. Factors to be considered include whether an external device or an internal modem, DSU, or terminal adapter or installed, the speed of the link, who is providing the clocking, and other link conditioning factors. The composite link is configured using a command port device and menus the same way we configured the data and voice/fax channels. This is accomplished by setting the link configurations to match the link device installed in the DataTalker and the requirements of the link service and remote system. If, for example, an internal DSU is installed that will be connected to a DDS network that provides clocking, the DataTalker detects that the link device is an internal DSU. Through the configuration stored in nonvolatile memory , it knows that the clocking is going to be provided by the DDS network. When you look at the versatility of the composite link, many other factors must be considered, such as answer or originate, two- or four-wire, and dial-up or leased line operation. But all these considerations are handled in the same manner as the example of the DSU above.

This is basically how your DataTalker is connected to a data device and voice or fax equipment, how the internal logic is conditioned to transfer data, and how the composite link passes that data on to the remote site.

DataT alker Owner’s Manual

1.4 System Features

1.4.1 Voice/Fax

The voice/fax feature of the DataTalker allows you to establish voice or fax traffic on top of your normal data communications over a composite link, saving the expense of extra communications lines. The DataTalker provides three types of telephone circuits (FXS, FXO, and E&M) that allow a telephone, a fax machine, a PBX station card, or a PBX E&M trunk to be directly connected to it. In one configuration, these telephone circuits cause the telephone at a remote location to ring when you pick up the handset on the local telephone. In another configuration, an off-site extension moves your office extension to a remote location. In a third configuration, you can use the DataTalker to tie two PBXes together.

1.4.2 Data Channel

The DataTalker data channel is able to accommodate any asynchronous device or any SDLC/ HDLC synchronous device. Configuration of the data channel is controlled by menus that determine the mode of operation (sync or async), whether or not clocking is necessary, the speed of the channel, and a number of async channel conditioning parameters.

1.4.3 Composite Link

The DataTalker’s composite link is capable of synchronous and full duplex communications with an internal or external link device. Using an internal modem, ISDN terminal adapter, DSU, or external device, the DataTalker can be connected to different types of communications links, such as a dial-up line, a leased line, a Basic Rate Interface (BRI) ISDN service, or a DDS network. If an external link device is used, the DataTalker can communicate with it using either the RS232 or V.35 standard.

1.4.4 Flow Control

Flow control regulates the volume of data entering the data port. When the channel buffer is almost full, a flow control command is issued which tells the device attached to the data port to stop sending data. The devices on both ends of the link must be configured for the same flow control method. The most common flow control methods are XON/XOFF and RS232C signal control (using CTS). The DataTalker supports these and ENQ/ACK.

DATATALKER-INITIATED

FLOW CONTROL

Channel Device

Flow control stops the input of data to the DataTalker

DATA DATA

DataTalker DataTalker

CHANNEL DEVICE-

INITIATED PACING

Channel Device

Pacing stops the output of data from the DataTalker

1.4.5 Parameter Memory

A nonvolatile memory for storing configurations and options means that the DataTalker remains configured until you change it. You can configure a DataT alker and save the parameters to memory, turn it off, ship it, and use it without having to reconfigure it.

Chapter 1 - Introduction and Description

1.4.6 Diagnostics

Diagnostics in a network are of considerable importance. That is why the DataTalker is equipped with several diagnostic modes that will test every aspect of the network. The diagnostics include easy-to-execute tests for the data channel, voice/fax channel, composite link, and various components of the DataTalker unit itself. The diagnostic tests are executed from a single diagnostic tests menu by selecting the test number and following any corresponding instructions given by the DataTalker.

1.4.7 Operational Statistics

Operational statistics provide an activity report of the DataTalker network. Statistics such as receive-block errors pinpoint composite link device or line problems. Composite link statistics are displayed in a single screen.

DataT alker Owner’s Manual

1.5 FCC Regulations for Telephone Line Interconnection

1. This equipment complies with Part 68 of the FCC rules. On the outside surface of this equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN). If requested, this information must be provided to the telephone company.

2. As indicated below the suitable jack (USOC connecting arrangement) for this equipment is shown. If applicable, the facility interface codes (FIC) and service order codes (SOC) are shown.

3. The ringer equivalence number (REN) is used to determine the quantity of devices which may be connected to the telephone line. Excessive RENs on the telephone line may result in the devices not ringing in response to an incoming call. In most, but not all areas, the sum of the RENs should not exceed five (5.0). To be certain of the number of devices that may be connected to the line, as determined by the total RENs, contact the telephone company to determine the maximum REN for the calling area.

4. If this equipment causes harm to the telephone network, the telephone company will notify you in advance. But if advance notice isn’t practical, the telephone company will notify the customer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary .

5. The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make necessary modifications in order to maintain uninterrupted service.

6. If trouble is experienced with this equipment (the model of which is indicated below) please contact Multi-Tech Systems, Inc. at the address shown below for details of how to have repairs made. If the trouble is causing harm to the telephone network, the telephone company may request you remove the equipment from the network until the problem is resolved.

7. No repairs are to be made by you. Repairs are to be made only by Multi-Tech Systems or its licensees. Unauthorized repairs void registration and warranty .

8. This equipment cannot be used on public coin service provided by the telephone company . Connection to Party Line Service is subject to state tariffs. (Contact the state public utility commission, public service commission or corporation commission for information.)

9. If so required, this equipment is hearing aid compatible. Manufacturer: Multi-Tech Systems, Inc.

Model Number: DT10x and DT10xR Series FCC Registration Number: AU7USA-22313-DE-N (DSU)

AU7USA-22271-MM-E (Modem) Ringer Equivalence: 0.3B (Modem) Modular Jack (USOC): RJ-1 1 or RJ-48 (single line) Service Center in U.S.A. Multi-Tech Systems Inc.

2205 Woodale Drive

Mounds View , MN 55112 USA

(612) 785-3500 or (800) 328-9717

Fax (612) 785-9874

1.6 Canadian Limitations Notice

Notice: The Canadian Department of Communications label identifies certificated equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. The department does not guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company . The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension cord). The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian facility designated by the Supplier. Any repairs or alterations made by the user to this equipment; or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.

Users should insure for their own protection that the electrical ground connections of the power utility , telephone lines and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

Chapter 1 - Introduction and Description

Caution: Users should not attempt to make such connections themselves, but should contact the

appropriate electric inspection authority , or electrician, as appropriate. The Load Number (LN) assigned to each terminal device denotes the percentage of the total

load to be connected to a telephone loop which is used by the device, to prevent overloading. The termination on a loop may consist of any combinations of devices subject only to the requirement that the total of the Load Numbers of all the devices does not exceed 100.

The load number for the composite link modem is 4.

DataT alker Owner’s Manual

1.7 Specifications

1.7.1 Async Data Channel

Number of Channels One Maximum Speed 1 15,200 bps Channel Speed All standard speeds from 300 bps to 1 15,200 bps Data Format 5, 6, 7, or 8 data bits, with 1, 1.5, or 2 stop bits Parity Odd, even, or none Local Echo On or off selectable Flow Control XON/XOFF, CTS, or HP ENQ/ACK selectable Pacing On or off selectable, RTS on/off, or XON/XOFF Interface RS-232D/ITU-T V.24; DB-25 female connector

1.7.2 Sync Data Channel

Data Format Synchronous Channel Speed Up to 128K bps Protocol SDLC/HDLC Error Correction 16-bit CRC block check with ARQ Interface RS-232D/ITU-T V.24; DB-25 female connector

1.7.3 System Control (Command Port)

Local Access Through DataTalker’ s RS232C command port Device Any asynchronous keyboard terminal or PC in terminal mode (local

access only)

Menus Menus to configure data channel, voice/fax channel(s), and

composite link. Statistics menu and test menus are provided to monitor performance and diagnose problems.

Diagnostics Data or voice loopback, memory , watch dog tests, and DIP switch

definitions and settings

1.7.4 Composite Link

Number of Links One Data Format Synchronous

Link Speeds Up to 256K bps Link Protocol Proprietary modified HDLC Error Correction 16-bit CRC block check with ARQ Interface RS-232D/V.24 or ITU-T V.35, or use DataTalker integral modem,

DSU, or ISDN terminal adapter

Chapter 1 - Introduction and Description

1.7.5 Internal Modem

Modulation ITU-T V.34; AT&T V.32 terbo; ITU-T V.32bis, V.32, V.22bis, V.22; Bell

212A and 103 (North America) or V.23 and V.21 (international) Speeds 300 bps to 33.6K bps Commands Fully AT command compatible Usage Synchronous full duplex over unconditioned 2-wire or 4-wire leased

line; asynchronous half or full duplex over 2-wire dial-up Line Interface RJ-1 1C jack for dial-up and 2-wire or 4-wire leased line; in Canada,

one CA02B connector

1.7.6 Internal DSU

Speed 56K, 19.2K, 9.6K, 4.8K, or 2.4K bps Format Synchronous DDS or compatible Usage Full duplex over LADS (Local Area Data Set) or two-pair non-loaded

metallic wire Line Interface DDS interface with an RJ-48 keyed jack

1.7.7 ISDN Terminal Adapter

Description Integral ISDN terminal adapter card Operating Mode ISDN Basic Rate; 1B+D or 2B+D Synchronous Data Rates 2.4–128 Kbps Clocking Normal network clock (slaved to network receive clock); private

network master (internal); external clock of DTE data Commands Menu system D-Channel Switch A T&T 5ESS®, 5E6; NT DMS-100™, BCS-32; Compatibility Siemens Stromberg-Carlson EWSD®, National ISDN-1;NEC

International Switch Line Interface 2-wire ISDN Basic Rate 2B1Q U-interface; ANSI T1.601-1992

compliant; RJ-48 jack B-Channel Aggregation BONDING Protocol, Mode 1

1.7.8 Voice/Fax Channel

Number of Channels One or two channels Voice Digitization Rates 9600 and 16K bps Automatic Fax Group 3 fax rates Modulation/Demodulation (2400, 4800, 7200 and 9600 bps) Analog Interfaces FXS, FXO, and E&M (channel 1 only) Signaling DTMF Line Interface FXS and FXO: RJ-11 jacks

E&M: RJ-48 jack

DataT alker Owner’s Manual

1.7.9 Electrical/Physical

Desktop Models:

Power Supply Input 100 to 250 VAC Power Supply Output +5v@5A, +12v@1A, -12v@0.5A Power Consumption 20 watts Dimensions 2.3" high x 9" wide x 12.8" deep

Weight 7 pounds (3.2 kg)

Rack-mount Models:

Power Supply Input 100 to 250 VAC Frequency 47 to 63 Hz Power Consumption 20 watts Dimensions 2.00" high x 9. 98" wide x 12.75" deep

5.7 cm high x 22.9 cm wide x 32.7 cm deep

5.1 cm high x 25.2 cm wide x 32.4 cm deep

Weight 5 pounds (2.3 kg)

Chapter 2 - Configuration

DataT alker Owner’s Manual

2.1 Introduction

The Multi-Tech DataT alker is available in both desktop (DT10x) and rack-mount (DT10xR) versions. The desktop version is designed for home office applications. It is mounted in a horizontal cabinet and has an external power supply , a power switch, an originate switch, and a switch that allows you to use it also as a stand-alone modem or terminal adapter. The rack-mount version is designed for main office applications. It is mounted for vertical insertion into a MultiTech RackTalker rack, has an internal power supply, is hot-swappable, and has a reset switch. Otherwise, they are identical. DataTalkers are available with a synchronous or asynchronous data channel, one or two voice/fax channels, and an optional internal composite link V.34 modem, 56K bps DSU, or 2B+D link ISDN terminal adapter.

DataTalker Configurations

Desktop Models:

Base Model with...

No Additional Options

Installed

33.6K bps Modem DT101/V34 DT102/V34

56K bps DSU DT101/56 DT102/56

2B+D ISDN Terminal

Adapter

Rack-Mount Models:

Base Model with...

No Additional Options

Installed

33.6K bps Modem DT101R/V34 DT102R/V34

56K bps DSU DT101R/56 DT102R/56

2B+D ISDN Terminal

Adapter

1 Data Channel & 1 Voice/Fax Channel

DT101 DT102

DT101/IS DT102/IS

1 Data Channel & 1 Voice/Fax Channel

DT101R DT102R

DT101R/IS DT102R/IS

1 Data Channel & 2

Voice/Fax Channels

1 Data Channel & 2

Voice/Fax Channels

Valid Voice/Fax Configurations: Configuration Description

E&M to E&M Any phone or fax machine connected to the PBX at one site can call

any phone or fax machine connected to the PBX at the other end.

FXS to FXS No number must be dialed. If the phone or fax machine on one end

goes off hook, the phone or fax machine on the other end rings.

FXS to FXO The phone and fax machine at the FXS site act as though they are

extensions of the PBX at the FXO site.

2.2 Configuration 1 - Dial-Up Link

Configuration 1 is a dial-up link using a pair of DataTalkers to provide data communications between a home office PC and the main office host computer and telephone services through the main office telephone system. The data and telephone services are provided using a single line between the home office and the main office. In this application, the main office DataTalker is tied to a host computer via an async channel, and the data channel of the home office DataTalker is connected to the serial port of the home office PC. The composite link is provided by internal

33.6K modems in a dial-up configuration. All of the telephone services of the main of fice are supplied to the home office as if the home office was directly connected to the main office telephone system.

Asynchronous Channel

Composite Link

PSTN

Data / Voice / Fax Concentrator

VOICE /

RXTFCR RD TMV35 EXTMDMDSU

RSGXSGRCVXMTFAXE&MFXOFXS

FAX 2

COMPOSITE LINK

DTR

28.8 OHDBUP

STATUS

VOICE /

DATA/

ORIG

FXSFXO E&MFAX XMTRCV XSGRSGCOMXMTRCV FC

CD RCVXMTCTS 56 RTSNS OOS

FAX 1

COMMAND

101 MDM/TA

DataTalker

Telephone

DATA/ COMMAND

PSTN

Voice/Fax

Channel

Trunk

Trunk Station Station

PBX

Data / Voice / Fax Concentrator

VOICE /

RXTFCR RD TMV35 EXTMDMDSU

RSGXSGRCVXMTFAXE&MFXOFXS

FAX 2

COMPOSITE LINK

DTR

28.8 OHDBUP

STATUS

VOICE /

ORIG

FXSFXO E&MFAX XMTRCV XSGRSGCOMXMTRCV FC

CD RCVXMTCTS 56 RTSNS OOS

FAX 1

101 MDM/TA

DataTalker

Voice/Fax

Channel

Asynchronous Channel

Telephone

Home Office

Chapter 2 - Configuration

Figure 2-1 Dial-Up Link

To set up this configuration, connect the main office DataTalker to the host computer, to the inoffice telephone system (PBX), and to the public switched telephone network (PSTN). Connect the home office DataTalker to the serial port of your PC, to a telephone set, and to your local telephone line. You must also connect a terminal or a PC running communications software (such as Multi-Tech’s MultiExpress™ for DOS) to the dual function data/command port and configure the DataTalkers. Configure the DataTalker for the main office application; i.e., set up the voice/fax channel for a local interface of FXO and a remote interface of FXS. Configure the home office unit for DTR dialing of the main office DataTalker, a local interface of FXS, and a remote interface of FXO.

You must configure the DataTalkers before you connect them to the computers. T o configure a DataTalker, place DIP switch position 3 in the down (closed) position and connect a command port device such as a terminal or a PC to the DATA/COMMAND connector on the back of the DataTalker. T urn on the DataTalker and PC and run your communications software in terminal mode. (Set it for direct connection at a serial port speed of 19,200 bps or slower.) Press the ENTER key to establish communications with DataTalker and see the Main Menu.

A series of configuration menus provides simple and complete configuration information for each aspect of the DataTalker. Using the menus, we will configure one DataTalker for the main office and the second one for the home office.

The menus flow from the Main Menu through the Configurations menu to configuration menus for specific parts of the DataTalker. From the Configurations menu you will use the first menu to configure the data port of the main office unit to talk to the host computer , and that of the home office unit to talk to the async channel of the home office PC. You will use the next one to configure the voice/fax channel for connection of the main office DataTalker to an extension of the local PBX, and the home office DataTalker to your telephone and your local telephone service. You will use the final group of configuration menus to set up the internal MMH2834 modem to dial the main office from the home office and for the main of fice to answer the call.

As you go through these configuration menus, you must supply the specifics of your configuration.

DataT alker Owner’s Manual

When you established communication, the Main Menu appeared. From the Main Menu you can configure the unit, display statistics, reset various functions within the DataTalker, and run diagnostic tests:

Main Menu 1 - Configurations

2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SETUP

Selection : _

To configure the DataTalker, enter 1 and press ENTER. The Configurations menu is displayed. From this menu you can configure the data port, voice/fax

channel(s), or the composite link. You can also select various factory defaults and store your current configuration:

Configurations 1 - Data Port Configuration

2 - Voice/Fax Channel(s) Configuration 3 - Composite Link Configuration 4 - Factory Default Configuration Options 5 - Configure Remote Unit S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

For the main office and the home office units, let’s use the default data port configuration. If your specific configuration requires that the data port be set up differently , select the option and choose the new parameter.

From the Configurations menu, select option 2, Voice/Fax Channel(s) Configuration, to configure the voice/fax channels. For the main office, set up the local interface type (option 6) for an FXO connection. For the remote interface type (option 1 1), accept the default FXS connection. For the other selections, accept the defaults .

Voice/Fax Channel 1 Configuration 1 - Destination Channel : 1

2 - Digitizing Rate : 9600 3 - Output Level Atten. : 12 4 - Input Level Gain : 03 5 - Silence Suppression : Off 6 - Local Interface Type : FXS 7 - Ground/Loop Start (FXS) : Loop 8 - 2 or 4 Wire (E&M) : N/A 9 - Dialtone/Wink (E&M) : N/A 10 - Wink Timer (E&M) : N/A 11 - Remote Interface Type : FXS 12 - Ground/Loop Start (FXS) : Loop 13 - 2 or 4 Wire (E&M) : N/A 14 - Dialtone/Wink (E&M) : N/A S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

Chapter 2 - Configuration

Enter S and press ENTER to store all configurations for the main office. Set up the home office unit the same way, except that you should switch the local and remote

interface types (FXS for the local interface and FXO for the remote interface). After you select the home office options, enter S to store all configurations. Enter P to return to the Configurations menu.

At the Configurations menu, select option 3, Composite Link Configuration. The composite link settings for the MMH2834 internal modem are displayed.

The main office will be set up to receive a call from the home office. The home of fice will be set up for DTR Dialing of the phone number at the main office.

Composite Link Settings - Internal MMH2834

- Enter AT commands to 2834 2 - On-Line XMT Rate: 28800 3 - Speed Setting: 33600

Dial/Leased: Dial

4 5 - 2 or 4 Wire: 2 Wire

Answer/Originate: Answer

6 7 - Transmit Level -10db 8 - DOD/DOI: On 9 - DOI Timer: 03min 10 - DOD Toggle DTR: 40sec S - Store All Configurations M - Main Menu P - Previous Menu Selection : _

Set up the main office unit to use the default composite link settings. Set up the home office unit for DTR dialing. To set up for DTR dialing, select option 1, Enter AT Commands to 2834, and enter the following AT commands:

ATDT[Number to Dial]N0 <CR> AT$D1 <CR> AT&W <CR> Q <CR>

ATDT[Number to Dial]N0 is the AT command to store the main of fice phone number in location

N0. The AT$D1 command sets the modem for DTR dialing when the home office DataT alker is powered up. The AT&W stores the $D1 command as a user default. The Q command returns you to the Composite Link Settings menu. <CR> is shorthand for a carriage return (press ENTER). Enter S and press ENTER to store the new configuration.

This completes the configuration of both DataTalkers. The main office DataTalker can now be connected to the host computer, PBX, and phone line. The home of fice DataTalker can be taken home.

To connect the main office DataTalker, first disconnect the PC or terminal from the DATA/ COMMAND connector on the DataTalker. Place DIP switch position 3 in the OPEN (up) position to change the data/command port over to the data channel. Connect an RS232C cable between the DATA/COMMAND connector on the DataTalker and an asynchronous port on the host computer. Connect an RJ-11 phone cable from the VOICE/FAX CHANNEL 1 FXO connector on the back panel to the station side of the PBX. Connect an RJ-1 1 phone cable between the DIALUP jack on the DataTalker and the dial-up phone line.

DataT alker Owner’s Manual

To connect the home office DataTalker to its PC, connect an RS232C cable between the DATA/ COMMAND connector on the DataTalker and an async port on the PC (typically, COM1 or COM2). Place DIP switch position 3 on the side of the DataTalker in the OPEN (up) position to enable the data channel.

To connect your home telephone to the DataTalker, remove the telephone cable from the wall jack and connect it to the VOICE/FAX CHANNEL 1 FXS connector on the DataTalker. Connect a second RJ-1 1 phone cable between the Dial-Up jack on the DataTalker and your wall jack.

The home office DataTalker is now ready to communicate with the main office. When you power on the home office DataTalker, the internal MMH2834 modem dials the previously stored number for the main office. The OH (Off-Hook) LED lights, indicating that the modem is active. After the main office DataTalker answers, the CD (Carrier Detect) LED lights and the RD (Remote Down) LED goes off. At this point, voice and data communication can begin.

If you do not configure the DataTalker for DTR dialing, there is an alternate way to dial the main office computer . Connect a phone to the FXS jack and a dial-up phone line to the internal composite link DIAL-UP jack. Pick up the receiver and listen for a dial tone, then dial the main office number . When you hear the answer tone, press and release the Originate switch on the DataTalker’s front panel. The OH light will come on, then the modem will handshake and connect. Hang up the phone and data communications will proceed normally .

Chapter 2 - Configuration

2.3 Configuration 2 - MMH900 Series with Voice/Fax

Configuration 2 adds voice capability to an existing data-only network using the same composite link. The example shown in Figure 2-2 had an existing data-only network consisting of a MultiMux MMH904C multiplexer connected to a host computer at the local site and a second MMH904C connected to terminals and/or PCs and a shared printer at the remote site. To add voice capability, a DataTalker is added between the composite link of the MMH904 and the public data network (PDN) at both sites. The composite link between the two sites is now moved from the MMH904 multiplexer to the new DataTalker. The composite link of the MultiMux MMH904 is reconfigured as an external synchronous link device and connected to the synchronous data channel of the DataTalker. The voice capability is added by connecting a telephone to the FXS port on the back panel of the DataTalker at each site and configuring the voice/fax channel of the DataTalkers for FXS to FXS. Now, while you are transferring data over the composite link, you can pick up the telephone and have a simultaneous voice conversation.

Asynchronous Channel

CD RCV

MultiMux MMH904

Voice/Fax

Channel

BUFFER

FULLNESS

LEVEL

Channel Eight

Channel SixChannel Seven

Channel Five

Command Modem

RCV

XMT OH

RCV

XMT

XMTRCV XMTRCV XMTRCV

DTR

Internal Composite Link

External Composite Link

Channel one

Channel TwoChannel ThreeChannel Four

CTS XMT

V.35

RCV

XMTRCV

RCVXMTXMTRCV

XMT

MMH2834 CD RCV XMT CTS 28.8 24.0 19.2 14.4 OH TR EC DBUP DSU CD RCV XMT CTS 56 19.2 RTS NS OOS TM V29/V33 Modem CD RCV XMT CTS

Local Site

T E

A L

Telephone

Sync Data

Channel

VOICE / FAX 2

VOICE / FXSFXO E&MFAXXMT RCVXSGRSGCOMXMTRCV FC FAX 1

Data / Voice / Fax Concentrator

RXTFCR RDTM V35EXTMDM DSU

RSGXSGRCVXMTFAXE&MFXOFXS

TA COMPOSITE LINK

28.8 OHDBUP

DTR

STATUS

CDRCV XMTCTS56 RTSNS OOS

101 MDM/TA

Composite Link

PDN

DATA/ COMMAND

INTERNAL LINK DEVICE

(Modems)

MultiTech

Systems

MultiMux

Statistical Multiplexer

DATA/

ORIG

COMMAND

DataTalker

Data / Voice / Fax Concentrator

VOICE /

RXTFCR RDTM V35EXTMDM DSU

RSGXSGRCVXMTFAXE&MFXOFXS

FAX 2

COMPOSITE LINK STATUS

VOICE /

CDRCV XMTCTS56 RTSNS OOS

ORIG

FXSFXO E&MFAXXMT RCVXSGRSGCOMXMTRCV FC

FAX 1

101 MDM/TA

DataTalker

28.8 OHDBUP

DTR

Sync Data

Channel

Command Modem

RCV CD

External Composite Link

CD RCV

MultiMux MMH904

Asynchronous Channel

INTERNAL LINK DEVICE

BUFFER

FULLNESS

(Modems)

LEVEL

MultiTech

Systems

Channel Eight

Channel SixChannel Seven

Channel Five

XMT

RCV

XMT

XMTRCV XMTRCV XMTRCV

DTR

MultiMux

Internal Composite Link

Channel one

Channel Three

Channel Two

Channel Four

Statistical Multiplexer

CTS

XMT

V.35

RCV

XMTRCV

RCVXMTXMTRCV

XMT

MMH2834 CD RCV XMT CTS 28.8 24.0 19.2 14.4 OH TR EC DBUP DSU CD RCV XMT CTS 56 19.2 RTS NS OOS TM V29/V33 Modem CD RCV XMT CTS

Voice/Fax

Channel

Telephone

Remote Site

Printer

Figure 2-2. Adding Voice to Data-Only Network

The async channels of the MultiMux MMH904s operate the same way as in the data-only network. The MMH904 is reconfigured for an external link device by changing the 8-position DIP switch position 2 to the down (closed) position, ensuring that the composite link is configured for sync mode, and setting clocking to External. An RS232C cable can now be connected to the COMPOSITE LINK EXTERNAL RS232C/V.35 connector on the back panel of the MMH904.

The composite link connection of the DataTalker to the PDN depends on the type of link device being used. If the link device is an internal 33.6K bps modem, connect the Modem DIAL-UP or LEASED connector to the PDN. If the link device is an internal DSU or ISDN terminal adapter, connect the DSU/TA DIGITAL connector to the PDN. If an external link device is used, cable it to the EXTERNAL COMPOSITE RS232C/V.35 connector. The connection type depends on whether the interface of the external link device is RS232C or V.35. If it is V.35, a shunt on the main board of the DataTalker must be moved to the V .35 position.

You must configure the DataT alker before you connect it to the MultiMux MMH904. To configure the DataTalker, place DIP switch position 3 in the down (closed) position and connect a command port device such as a terminal or a PC to the DATA/COMMAND connector on the back of the DataTalker. T urn on the DataTalker and PC and run your communications software in terminal mode. (Set it for direct connection at a serial port speed of 19,200 bps or slower.) Press the ENTER key to establish communications with DataTalker and see the Main Menu.

DataT alker Owner’s Manual

A series of configuration menus provides simple and complete configuration information for each aspect of the DataTalker. From the Main Menu, you can access menus to configure the unit, display statistics, reset various functions within the DataTalker, and run diagnostic tests:

Main Menu 1 - Configurations

2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SETUP

Selection : _

To go to the Configurations menu, enter 1 and press ENTER. The Configurations menu appears. From this menu you can configure the data port, voice/fax channel(s), or the composite link. This menu also allows you to select various factory defaults and store your current configuration.

Configurations 1 - Data Port Configuration

Selection : _

For configuration 2, start by configuring the data port. Enter 1 and press ENTER. The Data Port Configuration menu appears:

Data Port Configuration 1 - Async/Sync: Async

2 - Speed: 19200 3 - Word Length: 8 4 - Stop Bits: 1 5 - Parity: None 6 - Flow Control: CTS 7 - Enq/Ack Flow Control: Off 8 - Echo: Off 9 - Pacing: Off 10 - EIA Pass Through: Off 11 - Pass Xon: Off S - Store All Configurations M - Main Menu P - Previous Menu Selection : _

Chapter 2 - Configuration

The data port in this configuration will be set up for synchronous operation. To configure the data port for sync operation, enter 1 (Aysnc/Sync) option and change the default Async to Sync. The data port configuration menu displays the sync parameters.

Data Port Configuration 1 - Async/Sync: Sync

2 - Speed: 19200 3 - Clocking: Internal 4 - Idle Condition: Flags 5 - NRZ/NRZI Encoding: NRZ 6 - CRC Preset: All 1s 7 - Inter-frame Timer: Off

Store All Configuations

S M - Main Menu P - Previous Menu Selection : _

Enter 2 and press ENTER to set the speed of the sync data port. Select the appropriate speed by entering its menu list number. The speed you select should be no faster than the composite link speed. At the sync data port configuration menu, determine who is supplying the clocking. The default internal clocking allows the DataTalker to supply the clock. Enter the letter S to store all configurations and then press P to return to the previous menu.

For configuration 2, where both sites have a telephone connected to the DataTalker, initially accept the defaults for the second choice in the Configurations menu, Voice/Fax Channels Configuration.

At the Configurations menu, enter 3 and press ENTER to display the Composite Link Settings menu.

The DataTalker detects the type of link device being used from the way a DIP switch is set or by reading the device when it is installed on the main PC board. In this configuration, a 56K bps internal DSU is being used as the composite link device. So, when the internal composite link settings menu is displayed, it is for a DSU:

Composite Link Settings - Internal DSU

1 - Speed: 56k 2 - Clocking: DDS S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

The internal DSU has two options: speed and clocking. The speed option should match the DDS line speed. The clocking option depends on how you have set up your link with the telephone company. If the link is set up as a DDS link, use the default DDS setting. If the link is set up for the DataTalker to provide the clocking, change the clocking option to Internal.

This completes the configuration of both DataTalkers. Disconnect the data/command port from the terminal or PC and connect it to the composite link of the MMH904. Place DIP switch position 3 on both DataTalkers in the up (OPEN) position to change the data/command port over to a data channel.

DataT alker Owner’s Manual

2.4 Configuration 3 - LAN to LAN

Configuration 3 is an example of a pair of DataTalkers providing the link between two LANs with the added benefit of voice or fax traffic over the same composite link. Bridging the LANs over a single high speed composite link expands the capacity of each LAN. The LAN bridge on each LAN is provided by a router/bridge with a synchronous interface connected to the DataTalker’s data channel. The composite link could be an internal ISDN terminal adapter , an internal 56K DSU, or one of a variety of external high speed link devices up to fractional T1 devices. The additional feature provided by the DataTalkers is free voice or fax traffic without the need to establish a separate voice connection between the two LANs.

Ethernet

Concentrator

LAN PC

File Server

h c e T

stems Sy

Router/Bridge

Print Server

PSTN

Communications

Server

COMMAND

LAN 1

Sync Data

Channel

VOICE /

RSGXSGRCVXMTFAXE&MFXOFXS FAX 2

VOICE /

DATA/

ORIG

FXSFXO E&MFAXXMT RCVXSG RSGCOMXMTRCVFC

FAX 1

101 MDM/TA

DataTalker

Trunk Station Station

Data / Voice / Fax Concentrator

RXTFCR RDTM V35EXT MDMDSU COMPOSITE LINK STATUS

CDRCV XMTCTS 56RTS NSOOS

Trunk Trunk

PBX

Composite Link

Sync Data

PDN

Data / Voice / Fax Concentrator

VOICE /

RXTFCR RDTM V35EXT MDMDSU

RSGXSGRCVXMTFAXE&MFXOFXS

FAX 2

COMPOSITE LINK

DTR

28.8 OHDBUP

STATUS

VOICE /

DATA/

ORIG

FXSFXO E&MFAXXMT RCVXSG RSGCOMXMTRCVFC

CDRCV XMTCTS 56RTS NSOOS

FAX 1

COMMAND

28.8 OHDBUP

DTR

Voice/Fax

Channel

DataTalker

Voice/Fax

Channel

101 MDM/TA

Telephone

LAN PC

Printer

Channel

Router/Bridge

Communications

h c e

s tem ys S

Server

File Server

LAN 2

Ethernet

Concentrator

Print Server

LAN PC

Printer

Figure 2-3. LAN to LAN Configuration

In the configuration shown in Figure 2-3, the voice/fax channel 1 FXO port on the DataTalker at LAN 1 is connected to a station card on the local PBX, and the voice/fax channel 1 FXS port on the DataTalker at LAN 2 is connected to a telephone. On both ends, the data channel of the DataTalker is connected to the router’s synchronous port, and the router’ s Ethernet port is connected to the Ethernet concentrator. An RJ-48 telephone cable connected to the composite link at the DataTalker’s DSU/TA DIGITAL connector links the DataTalker’s internal DSU to the public data network.

You must configure the DataT alkers before you connect them to the LANs. To configure a DataTalker, place DIP switch position 3 in the down (closed) position and connect a command port device such as a terminal or a PC to the DATA/COMMAND connector on the back of the DataTalker. T urn on the DataTalker and PC and run your communications software in terminal mode. (Set it for direct connection at a serial port speed of 19,200 bps or slower.) Press the ENTER key to establish communications with DataTalker and bring up the Main Menu.

A series of configuration menus provides simple and complete configuration information for each aspect of the DataTalker. From the Main Menu, you can configure the unit, display statistics, reset various functions within the DataTalker, and run diagnostic tests:

Main Menu 1 - Configurations

2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SETUP

Selection : _

Chapter 2 - Configuration

To configure the DataTalker, enter 1 and press ENTER. The Configurations menu is displayed. From this menu you can configure the data port, voice/fax

channel(s), or the composite link. You can also select various factory defaults and store your current configuration:

Configurations 1 - Data Port Configuration

Selection : _

For configuration 3, let’s start by configuring the data port. Enter 1 and press ENTER. The Data Port Configuration menu is displayed:

Data Port Configuration 1 - Async/Sync: Async

Since the data port in this configuration is going to be set up for synchronous operation, only two options apply: Clocking and Speed. Enter 1 and press ENTER to change to the synchronous mode of operation. At the Sync Data Port Configuration menu, select the appropriate speed by entering its menu list number. Use caution when setting the speed—the sync data channel could very easily overrun the composite link if the speed is set too high. Enter 2 and press ENTER to change the clocking to internal, which allows the DataTalker to provide the clock.

DataT alker Owner’s Manual

Data Port Configuration 1 - Async/Sync: Sync

2 - Speed: 19200 3 - Clocking: Internal 4 - Idle Condition: Flags 5 - NRZ/NRZI Encoding: NRZ 6 - CRC Preset: All 1s 7 - Inter-frame Timer: Off

Store All Configuations

S M - Main Menu P - Previous Menu Selection : _

Press P to return to the Data Port Configuration menu, enter S to store all configurations, and then press P again to return to the previous menu. At the Configurations menu, enter 2 and press ENTER.

The Voice/Fax Channel 1 Configuration menu is displayed. For LAN 1, set voice/fax channel 1 for an FXO connection as the local interface type (option 6), and keep the default FXS as the remote interface type (option 11). LAN 2 must be set just the opposite (FXS for the local interface and FXO for the remote interface). For the other selections, accept the defaults .

Voice/Fax Channel 1 Configuration 1 - Destination Channel : 1

Selection : _

Enter S and press ENTER to store all configurations for LAN 1. Set up LAN 2 in the same manner, but switch the local and remote interface types (FXS for the

local interface and FXO for the remote interface). When you have finished selecting the LAN 2 options, enter S to store all configuration. Enter P to return to the Configurations menu.

At the Configurations menu, enter 3 and press ENTER to display the composite link configuration menu.

Chapter 2 - Configuration

The DataTalker knows the type of link device being used by the way a DIP switch is set or by detecting a device installed on the main PC board. In this configuration, a 56K bps internal DSU is used for the composite link device, so when the Composite Link Settings menu is displayed, it is for a DSU:

Composite Link Settings - Internal DSU

1 - Speed: 56k 2 - Clocking: DDS S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

The internal DSU has three options: speed and clocking. The speed option should match the DDS line speed. The clocking option depends on how you have set up your link with the telephone company . If the link is set up as a DDS link, use the default DDS setting. If the link is set up for the DataTalker to provide the clocking, change the clocking option to Internal. Enter S and press ENTER to store all configurations.

If you are setting up the composite link for an external composite link device, set up the device for internal clocking and the type of connection between the device and the DataTalker, i.e., an RS232 or a V.35 connection.

Composite Link Settings -External Device

1 - On-Line XMT Rate: 56000 2 - Clocking: External 3 - Back to Back: Off 4 - DOD/DOI: On 5 - DOI Timer: 03min 6 - DOD Toggle DTR: 40sec S - Store All Configurations M - Main Menu P - Previous Menu Selection : _

When you select option 3 in the Configurations menu, the Composite Link Settings - External Device menu will be displayed. Set the clocking and speed options to match the external device. The back to back option should remain off. Enter S and press ENTER to store all configurations.

This completes the configuration of both DataTalkers. Disconnect the data/command port from the terminal or PC and connect it to the router. Place DIP switch position 3 on both DataTalkers in the up (OPEN) position to change the data/command port over to a data channel.

DataT alker Owner’s Manual

2.5 Configuration 4 - PBX to PBX

Configuration 4 is a data/voice/fax configuration that uses two DataTalkers to link two PBXs. Using a single ISDN composite link, they connect a minicomputer and a PBX E&M trunk at the local site to a remote PC on the data part of the network and a second PBX E&M trunk on the voice/fax channel. The configuration is shown in Figure 2-4.

PSTN

Asynchronous Channel

ISDN

Data / Voice / Fax Concentrator

VOICE /

RXTFCR RDTM V35EXT MDMDSU

RSGXSGRCVXMTFAXE&MFXOFXS

FAX 2

COMPOSITE LINK

DTR

28.8 OHDBUP

STATUS

VOICE /

DATA/

ORIG

FXSFXO E&MFAXXMT RCVXSG RSGCOMXMTRCV FC

CDRCV XMTCTS 56RTS NSOOS

FAX 1

COMMAND

101 MDM/TA

DataTalker

Voice/Fax Channel 1 E&M

Trunk

Trunk Trunk Station Station

PBX

Telephone

Composite Link

PSTN

Remote Site

Data / Voice / Fax Concentrator

VOICE /

RXTFCR RDTM V35EXT MDMDSU

RSGXSGRCVXMTFAXE&MFXOFXS

FAX 2

COMPOSITE LINK

DTR

28.8 OHDBUP

STATUS

VOICE /

DATA/

ORIG

FXSFXO E&MFAXXMT RCVXSG RSGCOMXMTRCV FC

CDRCV XMTCTS 56RTS NSOOS

FAX 1

COMMAND

101 MDM/TA

DataTalker

Trunk Trunk Station Station

PBX

Local Site

Trunk

Asynchronous Channel

Minicomputer

Voice/Fax Channel 1 E&M

Telephone

Figure 2-4. PBX to PBX Configuration

At both the local and the remote sites, connect the DATA/COMMAND connector on the DataTalker to an asynchronous port on the computer; connect the DSU/TA DIGITAL jack on the DataTalker to the jack for the ISDN service; and connect the VOICE/FAX CHANNEL 1 E&M jack on the DataTalker to a PBX E&M trunk connector. When you are making an E&M connection, you should also run a ground wire from the ground connector on back of the DataTalker or the RackTalker rack to a ground connection on the PBX.

Before you install the DataTalkers, you must configure them. To configure a DataT alker, place DIP switch position 3 in the down (closed) position and connect a command port device such as a terminal or a PC to the DA TA/COMMAND connector on the back of the DataTalker. Turn on the DataTalker and PC and run your communications software in terminal mode. (Set it for direct connection at a serial port speed of 19,200 bps or slower.) Press the ENTER key to establish communications with DataTalker. The Main Menu will appear.

The Main Menu provides access to a series of configuration menus providing simple and complete configuration information for each aspect of the DataTalker. From the Main Menu, you can configure the unit, display statistics, reset various functions within the MMV, and run diagnostic tests:

Main Menu 1 - Configurations

2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SETUP

Selection : _

To configure the DataTalker, enter 1 and press ENTER.

Chapter 2 - Configuration

The Configurations menu is displayed. From this menu you can configure the data port, voice/fax channel(s), or the composite link. You can also select various factory defaults and store your current configuration.

Configurations 1 - Data Port Configuration

Selection : _

For both the local and the remote DataTalkers, the data communications will be asynchronous, so you may accept the defaults in the Data Port Configuration menu (option 1). If your configuration requires you to set up the data ports differently, enter 1 and press ENTER to select the Data Port Configuration menu, and select the new parameters.

To configure the voice/fax channels, enter 2 and press ENTER. The Voice/Fax Channel 1 Configuration menu appears. For both DataTalkers, change the local interface type (option 6) and the remote interface type (option 11) to E&M . For the other selections, accept the defaults .

Voice/Fax Channel 1 Configuration 1 - Destination Channel : 1

Selection : _

Enter S and press ENTER to store your selections. Enter P to return to the Configurations menu. At the Configurations menu, enter 3 and press ENTER to display the Composite Link Settings

menu. The DataTalker knows the type of link device being used by the way a DIP switch is set or by

reading an installed device on the main PC board. In this configuration, an internal ISDN terminal adapter is being used as the composite link device. So, when the Composite Link Settings menu is displayed, it is for an internal terminal adapter:

DataT alker Owner’s Manual

Composite Link Settings - Internal TA 1 - On-Line XMT Rate: 128000

2 - Configure TA 3 - DOD/DOI: Off S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

The terminal adapter menu displays the transmit rate and option 2 allows you to configure the terminal adapter. Use option 2 (Configure TA) to access the terminal adapter’s built-in configuration menus (refer to the ISDN Terminal Adapter Owner’s Manual for details). The Flush Time option is used only with an Alpha microcomputer or Wyse terminal. Enter S and press ENTER to store all configurations.

This completes the configuration of both DataTalkers. Disconnect the data/command port from the terminal or PC and connect it to the data computer or PC. Place DIP switch position 3 on both DataTalkers in the up (OPEN) position to change the data/command port over to a data channel.

Chapter 3 - Front and Rear Panel Descriptions

DataT alker Owner’s Manual

3.1 Introduction

This chapter describes the DataTalker front and back panels and switches. The front panel contains LED indicators for the data channel device, voice/fax channels, and the composite link. It also contains one or two switches, depending on whether it is a desktop or rack version. The back panel contains connectors for the data/command device, internal and external composite link devices, and the voice/fax channel devices. The desktop version also has a power switch.

3.2 Indicators

The DataTalker is equipped with a complete set of LED indicators on the front panel that show precisely what is occurring on the network at all times. By periodically checking the indicators you can keep abreast of system activity without tying up the channel device. There are three groups of indicators: data/command, voice/fax channel, and composite link. Use black legends on dual function composite link indicators with an internal DSU, blue legends with an internal modem, and underlined legends, such as TA, with an ISDN terminal adapter. On the desktop DataTalker the indicators are arranged horizontally, whereas on the rack-mounted DataTalker they are arranged vertically , but the relative position and function is the same on each. Table 3-1 explains the function of each indicator by group.

Data / Voice / Fax Concentrator

RXT FCR RD TM V35 EXT MDM DSU

COMPOSITE

LINK

STATUS

CD RCV XMT CTS 56 RTS NS OOS

DTR

28.8 OHDBUP

DATA/

COMMAND

VOICE /

FAX 2

VOICE /

ORIG

FXS FXO E&M FAX XMT RCV XSG RSGCOMXMT RCV FC

FAX 1

RSGXSGRCVXMTFA XE&MFXOFXS

101 MDM/TA

Figure 3-1. Front Panel (Desktop Version)

Table 3-1. LED Indicators

Data/Command Indicators XMT (Transmit) This indicator lights when the device connected to the data or command

channel is transmitting data to the DataTalker. RCV (Receive) This indicator lights when the device connected to the data or command

channel is receiving data from the DataTalker. FC (Flow Control) This indicator lights when the DataTalker has stopped channel data flow

because the channel buffer is almost full. If the DataTalker stops data flow at the request of a remote device, the Flow Control Received (FCR) indicator also lights. If the DataTalker stops data flow for any other reason, the FCR indicator remains off.

Data Flow

Async

Channel

Remote

Device

Async

Host CPU

Channel

FC LED ON FCR LED ON FC LED ON

Host

DataTalker

Composite

Link

Remote

DataTalker

Flow Control

COM (Command) This LED indicates whether the data or the command channel is selected. It lights when the command channel is selected (DIP switch 3 is down), and is off when the data channel is selected (DIP switch 3 is up).

Chapter 3 - Front and Rear Panel Descriptions

V oice/Fax Channels FXS (Foreign Exchange Station) This indicator lights when the voice/fax channel is configured

for FXS operation. FXO (Foreign Exchange Office) This indicator lights when the voice/fax channel is configured

for FXO operation. E&M (E&M Operation) This indicator lights when the voice/fax channel is configured for E&M

operation (voice/fax channel 1 only).

FAX (Fax) This indicator lights when there is fax traffic on the voice/fax channel. XMT Transmit. This indicator lights when voice or fax data is being transmitted. RCV (Receive) This indicator lights when voice or fax data is being received. XSG (Transmit Signal) This indicator lights when the FXS-configured channel is of f-hook, the

FXO-configured channel is receiving a ring from the telco, or the M lead is active when the voice/ fax channel is configured for E&M operation (i.e., the DataTalker is receiving a ring from the PBX).

RSG (Receive Signal) This indicator lights when the FXS-configured channel is ringing or the E lead is active on the E&M-configured channel.

Composite Link Status RXT (Retransmit) This indicator lights when the local DataTalker is retransmitting a block of data

on request. The RXT indicator lights for both internal and external link devices. FCR (Flow Control Received) This indicator lights when the remote DataTalker’s buffers are full

and the local DataTalker has been told to stop sending data. This indicator lights for both internal and external link devices.

RD (Remote Down) This indicator lights when the local DataTalker cannot establish communications with the remote DataTalker. The RD lights for both internal and external link devices.

TM (Test Mode) This indicator lights when one of the diagnostic tests is active. V35 (V.35 Interface) This indicator lights when the V.24/V.35 shunt is in the V.35 position. EXT (External) This indicator lights when the DataTalker is configured for an external composite

link device (DIP switch 2 is down).

MDM (Modem) This indicator lights when the internal composite link device is a modem. DSU (Data Service Unit) This indicator lights when the internal composite link device is a DSU. T A (Terminal Adapter) This indicator lights when the internal composite link device is an ISDN

terminal adapter. CD (Carrier Detect) This indicator lights when the composite link detects a carrier signal from a

remote DataTalker or a local external DSU or modem. RCV (Receive) This indicator flashes as data is being received from a remote DataTalker. The

RCV indicator flashes for both internal and external link devices. XMT (Transmit) This indicator flashes as data is being transmitted to the remote DataT alker. The

XMT indicator flashes for both internal and external link devices. CTS (Clear T o Send) This indicator lights when the composite link device is ready to transmit

data. The CTS indicator lights for both internal and external link devices.

DataT alker Owner’s Manual

28.8/56 (28.8K bps/56K bps) This composite link speed indicator displays the baud rate of the

internal modem (28.8) or DSU (56K). The type of composite link device is indicated by which of the EXT, MDM, DSU, or

This indicator lights steadily when a DSU is installed. It has three states when an internal MMH2834 modem is installed (ON, flashing seven or eight times per second). When the LED is ON solid, it indicates a link speed of 33.6K bps. When the LED flashes eight times with a one second off time, the link speed is 31.2K and when it flashes seven times with a one second off time, the link speed is 28.8K bps.

RTS/DTR (Request to Send/Data Terminal Ready) This dual function indicator functions as a Request To Send (RTS) indicator when a DSU is the internal composite link device or as a Data Terminal Ready (DTR) indicator when an internal modem or an ISDN terminal adapter is the composite link device.

NS/DBUP (No Signal/Dial Backup) This dual function indicator functions as a No Signal (NS) indicator when a DSU is installed. It lights when no signal at all is received from a DDS line or when the signal is too weak for normal operation. When a 33.6K bps modem is selected as the composite link device, it functions as a Dial Backup (DBUP) indicator, lighting when the modem is in dial backup mode.

OOS/OH (Out of Service/Off-Hook) This dual function indicator functions as an Out Of Service (OOS) indicator when an internal DSU is installed. It lights when an out of service signal is detected by the telco. When a 33.6K bps modem is selected as the composite link device, it functions as an off-hook (OH) indicator , lighting when the modem is active (of f-hook).

TA indicators lights.

2B (2B Operation) If an ISDN terminal adapter is installed, this indicator lights when the two ISDN B channels are operating as a single, high-speed, 128K bps channel. The indicator is off when one B channel is operating.

3.3 Connectors

The cable connections for the DataTalker are made at the back panel. Refer to Chapter 5 for cabling installation procedures. Refer to Appendix C for cabling diagrams. The DataTalker back panel is shown in Figure 3-2.

Chapter 3 - Front and Rear Panel Descriptions

Frame Ground

VOICE/FAX CHANNEL 2

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

DSU/TA

FXO FXS

E&M

VOICE/FAX CHANNEL 1

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

GND

POWER

Power Switch

Figure 3-2. Back Panel (Desktop Version)

3.3.1 Frame Ground Connector (GND)

Use the GND connector to connect the DataTalker frame ground to the PBX’s frame ground when the DataTalker is configured for E&M operation. (The frame ground connector for the rack version is on back of the RackTalker rack.)

3.3.2 POWER Connector

The POWER connector shown in Figure 3-2 is the receptacle for the DC power module supplied with the desktop DataTalker. The rack-mounted DataTalker has an AC power connector that plugs into the power bus on a Multi-Tech RackTalker rack when the DataT alker is inserted.

3.3.3 DATA/COMMAND Connector

Use this female DB-25 connector to connect the DataTalker to a data channel device such as a terminal, PC, or router, or to configure the DataTalker in command mode. The data channel device can be synchronous or asynchronous. In command mode, an ASCII terminal or a PC with a serial port can be used to configure the DataTalker. The connector’s function (data or command) is determined by the position of DIP switch position 3.

3.3.4 EXTERNAL COMPOSITE RS232C/V.35 Connector

Use this male DB-25 connector to connect to an external modem, DSU, ISDN terminal adapter, or any device that is synchronous, full duplex, and supplies clocking signals on pins 15 and 17. The connection interface can be either RS232C or V.35, selected by moving an internal V.35 shunt.

3.3.5 VOICE/FAX CHANNEL 1 FXS Connector

Use the FXS (Foreign eXchange Station) connector to connect the DataTalker to an analog station instrument (telephone, fax machine, or key telephone system). The FXS connector is an RJ-1 1 jack. If a second voice/fax channel is installed, it has an identical connector.

3.3.6 VOICE/FAX CHANNEL 1 FXO Connector

Use the FXO (Foreign eXchange Office) connector to connect the DataTalker to a analog station card on the local PBX (Private Branch eXchange). This connection is also commonly referred to as an OPX (Off Premises eXtension). The FXO connector is an RJ-11 jack. If a second voice/fax channel is installed, it has an identical connector.

DataT alker Owner’s Manual

3.3.7 VOICE/FAX CHANNEL 1 E&M Connector

Use the E&M connector to connect the DataTalker to the E&M connector on an analog PBX trunk when linking two PBXs together. The E&M connector is an RJ-48 jack. This connector is available on voice/fax channel 1 only .

3.3.8 DSU/TA DIGITAL Connector

Use the DSU/T A Digital connector to connect the DataTalker to a DDS or dedicated network line when an internal DSU is installed, or to an ISDN line when the ISDN terminal adapter is installed. The connector is an RJ-48 jack.

3.3.9 MODEM LEASED Connector

Use the LEASED connector to connect the DataTalker to a leased line when an internal composite link modem is installed. The connector is an RJ-11 jack.

3.3.10 MODEM DIAL-UP Connector

Use the DIAL-UP connector to connect the DataTalker to the PSTN when an internal composite link modem is installed. The connector is an RJ-11 jack.

3.4 Switches and Shunts

DataTalker switches include one or two switches on the front panel, a power switch on the back panel of the desktop version, and a DIP switch and shunt on the main printed circuit board (Figures 3-3 and 3-4).

Power Switch

RS-232 Shunt

Chapter 3 - Front and Rear Panel Descriptions

V.35 Shunt

DIP Switch

1 2 3 4 5 6

Originate Switch

101-MDM/TA Switch

Figure 3-3. Switches and Shunts (Desktop Version)

Power Connector

RS-232 Shunt

V.35 Shunt

DIP Switch

1 2 3 4 5 6

101

MultiMux

Data / Voice / Fax Concentrator

Reset Switch

Figure 3-4. Switches and Shunts (Rack Version)

3.4.1 Front Panel Switches

ORIG Originate Mode. Desktop version only. Use this pushbutton to manually dial a

modem or another DataTalker. To use the Originate switch, manually dial the remote modem’s number on a phone connected to the voice/fax channel 1 FXS connector on your DataTalker. Listen for the dialed modem’s answer tone. When you hear it, press and release the Originate switch. Replace the telephone handset in its cradle, and your data communications can begin.

101-MDM/T A DataTalker or Modem/TA Mode. Desktop version only. Place this slide switch in

the 101 position to use the DataTalker’s standard features. If an internal modem or ISDN terminal adapter is installed, place it in the MDM/T A position to use the DataTalker as a stand-alone modem or ISDN terminal adapter (e.g., to call a BBS or an on-line information service).

RESET Reset. Rack version only . This is a pushbutton switch located behind a hole on

the front panel. Use it to reset the DataTalker. (T urn the desktop version of f and on again to achieve the same result.) Insert a narrow object such as a pen or pencil point through the hole to activate it.

3.4.2 Power Switch

The power switch on the back panel of the desktop DataTalker provides DC power when placed in the I (on) position, and removes power when in the O (off) position. The rack-mounted DataTalker is hot-swappable, and has no power switch.

DataT alker Owner’s Manual

3.4.3 DIP Switch

The eight-position DIP switch is accessible through a cutout in the left side of the DataTalker series enclosure; its location is shown in Figures 3-3 and 3-4.

Position 1: Not used Position 2: OPEN (up) Internal composite link device selected

Position 3: OPEN (up) Data channel selected

Position 4: Not used Position 5: OPEN (up) MMV8/16/32 mode—for communicating with an

Position 6: Not used Position 7: Not used Position 8: Not used

Closed (down) External composite link device selected

Closed (down) Command channel selected

MMV800-, MMV1600-, or MMV3200-series mux

Closed (down) 101 mode—for communicating with an MMV101

or a DataTalker

3.4.4 RS232C/V.35 Shunt

You can connect an external composite link device using either an RS232/V.24 or a V.35 interface to the DataTalker’s External Composite connector. To configure the DataTalker for V .35 operation you must move a shunt on the main circuit board. Two shunt sockets are located on the back left side of the board (Figures 3-3 and 3-4). When an external composite link device with an RS232C/V.24 interface is connected to the composite link, the shunt is installed in the RS232 socket (factory default). When the external composite link device has a V.35 interface, you must move the shunt from the default RS232 socket to the V.35 socket. The V .35 indicator on the front panel lights when the shunt is in the V.35 position.

Chapter 4 - Unpacking and Configuration

DataT alker Owner’s Manual

4.1 Introduction

This chapter describes what to expect in your DataTalker shipping box, then describes how to configure the DataTalker. It provides a helpful configuration summary to give you a snapshot of how your unit is set up; summarizes options you should consider when configuring the data channel, router port, voice/fax channel, and composite link; and then guides you step by step through the initial configuration procedure.

4.2 Unpacking

The shipping box contains the DataTalker, an external power supply (if it is a desktop model), a plastic bag containing the cables, and the Owner’s Manual. Additional manuals may be included for options such as an internal link device. Inspect the contents for signs of any shipping damage. If damage is observed, do not power up the unit; contact Multi-Tech’s Technical Support for advice (see Chapter 8). If no damage is observed, configure the DataTalker using the information in this chapter.

DATA/ COMMAND

VOICE /

FAX 2

VOICE /

ORIG

COMXMT RCV FC FXS FXO E&M FAX XMT RCV XSG RSG

FAX 1

RSGXSGRCVXMTFAXE&MFXOFXS

101 MDM / TA

Data / Voice / Fax Concentrator

RXT FCR RD TM V35 EXT MDM DSU

COMPOSITE

LINK

STATUS

CD RCV XMT CTS 56 RTS NS OOS

28.8 OHDBUP

DTR

Figure 4-1. Unpacking

The plastic bag contains two 14-foot telephone cables and test cables. The two telephone cables may be used during installation.

4.3 Configuration Summary

The following chart shows possible configurations for your DataTalker. Use it as a snapshot of how your unit is set up. Circle the parameters that apply to your unit. For example, if your unit has the data channel set up for asynchronous communications, circle “Async.”

Data Port Sync Async Optional Port None Voice/Fax V oice/Fax Channel(s) 1 Channel 2 Channels

FXO (PBX) FXS (Phone) E&M (Trunk)

Composite Link Internal Device External Device External Device RS-232 V.35 Internal Composite Modem DSU ISDN T A

Link Device Internal Device Dial-Up Leased Digital

Connector

Chapter 4 - Unpacking and Configuration

4.4 Data Port Configuration Considerations

When configuring the data port on your DataTalker, the first question you should ask yourself is what the port is connected to (e.g., an async channel of a host computer, a LAN gateway or bridge, or the composite link of an MMH900 series MultiMux).

If the port is connected to an asynchronous channel of a host computer, you should

• set the data port to “Async.”

• set the speed of the port.

• verify all the other parameters of the Data Port Configuration menu. If the port is connected to a dedicated PC serving as a LAN gateway or bridge, the interface is

most likely synchronous and you should

• set the data port to “Sync.”

• set clocking to “Internal” or “External.”

• set the desired speed if you select internal clocking.

• ignore all the other parameters in the Data Port Configuration menu. If the port is connected to the composite link of a MultiMux MMH900 series, the interface is most

likely synchronous and you should

• set the data port to “Sync.”

• set clocking to “Internal.”

• set the desired speed.

• ignore all other parameters in the Data Port Configuration menu.

DataT alker Owner’s Manual

4.5 Voice/Fax Channel Configuration Considerations

When configuring the voice/fax channels on your DataTalker, the first question you should ask yourself is what the voice/fax port is connected to. The possibilities are an in-plant telephone switch, or PBX, (Private Branch eXchange); a PBX E&M trunk; or a telephone. If the voice/fax channel is being connected to a PBX, use the FXO connector. If it is being connected to a telephone, use the FXS connector. If it is being connected to a PBX E&M trunk in order to connect two PBXs, use the E&M connector.

Caution: When you configure the local DataTalker remote interface type (option 11), you are not setting the remote interface. You must know how the remote DataTalker is being used. Y ou may need to call the remote site to determine this.

If the local voice/fax channel is connected to a PBX extension and the remote voice/fax channel is connected to a telephone, you should

• set option 6 to “FXO.”

• use the default remote interface type (“FXS”). If the voice/fax channels are connected to PBX E&M trunks at both the local and the remote

sites, you should

• set option 6 to “E&M.”

• set the remote interface type (option 11) to “E&M.” If the voice/fax channel is connected to a telephone, you should

• use the default local interface type (“FXS”).

• verify the remote interface type (call if necessary).

• set the remote interface type (option 11) to “FXO” if the remote unit is being connected to a PBX, or use the default “FXS” if it is being connected to a telephone.

Chapter 4 - Unpacking and Configuration

4.6 Composite Link Configuration Considerations

The composite link configuration depends on the type of device used as the composite link device. The DataTalker knows the type of composite link device being used by the setting of a DIP switch and the sensing of conditions within the unit. In most cases you can use the default composite link configuration.

One of four menus will appear (MMH2834 modem, DSU, ISDN terminal adapter, or external device) depending on the device used.

If the MMH2834 modem is the composite link device, consider the following questions:

• Is DTR dialing being used? If yes, select option 1 and enter AT commands to enable DTR

dialing.

• Is the modem using a dial-up or a leased line? If dial-up, use the default configuration; if

leased, set option 4 to “Leased.”

• Is the modem being used in originate or answer mode? If answer mode, use the default

configuration; if originate, set option 6 to “Originate.”

If an internal DSU is the composite link device, consider the following questions:

• Is a DDS line being used? If yes, use the default configuration.

• Is the speed of the line 56K bps? If yes, use the default configuration.

• Is a 4-wire non-loaded metallic wire being used? If yes, set clocking on one unit to “Internal,”

and the other to “DDS.”

If an internal ISDN terminal adapter is the composite link device, consider the following questions:

• What are your network options, channel rate, and DTE options?

• What central office switch type and protocol is provided by your ISDN service provider—

A T&T 5ESS, 5E6; Northern T elecom DMS-100, BCS-32; Siemens Stromberg-Carlson EWSD, National ISDN-1; or NEC International Switch?

• What are the SPID and LDN numbers assigned by your service provider?

• Will the terminal adapter use dial mode operation or point-to-point leased mode operation?

• Is the terminal adapter being used in originate or answer mode? If an external device is the composite link device, consider the following questions:

• Type of external interface (RS232C or V.35). If V.35, you must move an internal shunt.

• Set clocking and speed to match the specific external device.

DataT alker Owner’s Manual

4.7 Configuration Procedure

Table 4-1. Configuration Procedure

Step Procedure 1 Review the configuration considerations for the data port, the voice/fax channel, and the

composite link in the previous sections.

2 Place DIP switch position 3 in the down (closed) position to enable the command port.

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

DATA/COMMAND

E&M

FXO FXS

EXTERNAL COMPOSITE

VOICE/FAX CHANNEL 1

DSU/TA

RS232C/V.35

GND

POWER

DIP Switch

3 Desktop version: Connect the DC power supply shipped with the DataTalker to the power

connector on the back panel and to the AC outlet. Rack-mounted version: Insert the DataTalker into a RackT alker rack.

4 Connect a terminal or PC running communications software to the DATA/COMMAND

connector on the back panel of the DataTalker. Use an appropriate RS232 cable to connect the DATA/COMMAND connector to your PC’s serial port. The terminal or PC serial port may be labeled COM1, COM2, or Serial Port. The DATA/COMMAND connector has a DCE physical interface.

DATA/COMMAND

RS232C/V.35

GND

POWER

RS232 Cable

E&M

DIAL-UP LEASED DIGITAL

INTERNAL COMPOSITE

FXO FXS

MODEM

VOICE/FAX CHANNEL 1

DSU/TA

DATA/COMMAND Connector

EXTERNAL COMPOSITE

Note: Any cables connected to the computer should be shielded to reduce interference.

5 Desktop version: Apply power to the DataTalker by placing the power switch on the back

panel in the on (I) position.

Rack-mounted version: Apply power to the RackTalker rack if it is not already on.

DATA/COMMAND

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

FXO FXS

EXTERNAL COMPOSITE

VOICE/FAX CHANNEL 1

DSU/TA

RS232C/V.35

GND

POWER

Power Switch

Chapter 4 - Unpacking and Configuration

6 Apply power to the terminal or PC. Run your PC communications software in terminal mode.

Press the ENTER key twice to establish communications with the DataTalker; the Main Menu then appears:

Main Menu 1 - Configurations

2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SETUP

Selection : _

7 To configure the DataTalker, enter number 1 and press ENTER. The Configurations menu

appears:

Configurations 1 - Data Port Configuration

Selection : _

8 If the data channel is async and the channel speed is 19.2K bps, you can use the data port

configuration defaults to start. Proceed to the voice/fax channel configuration (step 1 1). If the data channel speed is higher or lower than 19.2K bps, then you must change the data

port configuration. Enter 1 and press ENTER to go to the Data Port Configuration menu. Enter 2 and press ENTER to change the speed.

Data Port Configuration 1 - Async/Sync: Async

If you are connecting the data channel to a synchronous device, then you must change the data port configuration. Enter 1 and press ENTER to go to the Data Port Configuration menu. Only the first three options have to be considered for a synchronous device.

DataT alker Owner’s Manual

9 Configure the data port to meet the conditions of your installation by selecting option

numbers from the menus. Refer to Chapter 6 for a description of the Data Port Configuration menu options.

For example, if you are setting up the data port as a sync data channel, enter number 1 and press ENTER. The Data Port Async/Sync menu appears:

Data Port Async/Sync

1 - Async 2 - Sync P - Previous Menu

Selection : _

Select option 2 to select the sync mode of operation, and the data port configuration menu reappears.

10 When all options for the data port configuration have been set, enter the letter S and press

ENTER to store all configurations. Then enter the letter P and press ENTER to return to the configuration menu.

V oice/Fax Channel Configuration

1 1 If the voice/fax channels of both the local and remote DataT alkers are being connected to

telephone sets, i.e., both local and remote interfaces are FXS type, then you can skip the Voice/Fax Channel Configuration menu. Proceed to the Composite Link Configuration menu.

If either the local or the remote voice/fax channel is being connected to a PBX, then you must configure the voice/fax channel. Enter 2 and press ENTER for the Voice/Fax Channel Configuration menu.

If two voice/fax channels are installed in the DataTalker, a voice/fax channel configuration menu appears that allows you to configure either channel. Select the voice/fax channel that needs to be configured.

Voice/Fax Channel 1 Configuration 1 - Destination Channel : 1

Selection : _

Chapter 4 - Unpacking and Configuration

12 Configure voice/fax channel 1 to meet the conditions of your installation by selecting option

numbers from the menus.

• Accept the defaults for the first five options.

• Select the local interface type (option 6).

• Select the remote interface type (option 11). The remote interface option does not change the interface type on the remote unit; it only tells the local DataTalker how the remote unit is configured. The actual changing of the remote interface must be done at the remote site. See Chapter 6, “Menus,” for a description of the menu options for the voice/fax channel configuration.

13 When you have set all options for the voice/fax channel 1 configuration, enter S and press

ENTER to store all configurations. Then enter P and press ENTER to return to the Configurations menu.

14 If the DataTalker has a second voice/fax channel, select option 2 from the Configurations

menu, then select “Voice/Fax Channel 2 Configuration” from the Voice/Fax Channel Configuration menu and repeat the steps for voice/fax channel 1.

Composite Link Configuration

15 From the Configurations menu, enter 3 and press ENTER to go to the Composite Link

Configuration menu.

• If the composite link device is an internal MMH2834 modem, the Internal MMH2834 Modem Settings menu appears. Verify the configuration of the internal MMH2834 modem.

• If the composite link has an internal DSU, the Internal DSU menu appears. If the composite link is set up as a DDS link, use the default parameters.

• If the composite link has an internal ISDN terminal adapter, the Internal TA menu appears. Use the default flush time and go to the terminal adapter’s built-in menus (option 2) to verify and/or change the terminal adapter’s configuration. Refer to the ISDN T erminal Adapter Owner’s Manual for details on menu choices.

• If the composite link is configured for an external link device, the Composite Link Settings External Device menu appears. The default port parameters set clocking to external and speed to 56K bps. The external device must provide the clocking, must be a sync device, and must be full duplex. Refer to the device’s user documentation to set these parameters.

The four composite link settings menus are shown on the following pages.

Composite Link Settings - Internal MMH2834

- Enter AT commands to 2834 2 - On-Line XMT Rate: 28800 3 - Speed Setting: 33600

Dial/Leased: Dial

4 5 - 2 or 4 Wire: 2 Wire

Answer/Originate: Answer

6 7 - Transmit Level -10db 8 - DOD/DOI: On 9 - DOI Timer: 03min 10 - DOD Toggle DTR: 40sec S - Store All Configurations M - Main Menu P - Previous Menu Selection : _

DataT alker Owner’s Manual

• Configure the internal MMH2834 modem to meet the conditions of your installation by selecting option numbers from the menus.

• If you are setting up DTR dialing, select option 1, Enter AT Commands to 2834. Wait 5 seconds and then enter the following commands (press ENTER after each command):

ATDT[Number Modem to Dial]N0 AT$D1 - DTR Dialing command AT&W - Store New Parameters to memory Q - Return to modem menu

• If you have four-wire service from the telephone company , set option 5 to “4 Wire”; otherwise, accept the default.

• If the MMH2834 modem is to answer automatically when it receives a call, accept the option 6 default, “Answer”; otherwise, set it to “Originate.” (If the leased line option is selected, one modem must be set to “Answer,” the other to “Originate.”)

When you have set all the options for the port and modem, enter S and press ENTER to store all configurations. Then enter P and press ENTER to return to the Composite Link Configuration menu.

16 If the composite link device is an internal DSU, verify that the configuration options meet the

conditions of your installation.

Composite Link Settings - Internal DSU

1 - Speed: 56k 2 - Clocking: DDS S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

If you need to change an option, select its number from the menu. When you have set all the options for the DSU, enter S and press ENTER to store all

configurations. Then enter P and press ENTER to return to the configuration menu.

17 If the composite link device is an ISDN terminal adapter, verify that the configuration options

meet the conditions of your installation.

Composite Link Settings - Internal TA 1 - On-Line XMT Rate: 128000

2 - Configure TA 3 - DOD/DOI: Off S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

Chapter 4 - Unpacking and Configuration

To verify and/or change the terminal adapter’s configuration, select option 2, wait 5 seconds, and enter AT!V to access the terminal adapter’s configuration menu. Refer to the ISDN T erminal Adapter Owner’s Manual for configuration commands. To exit the terminal adapter’ s configuration menu, enter CTRL+X; then, to return to the DataTalker’ s Composite Link Settings - Internal TA menu, press ENTER, Q.

When you have set all the options for the terminal adapter, enter S and press ENTER to store all configurations. Then enter P and press ENTER to return to the Configurations menu.

18 If the composite link device is an external device, verify that the configuration options meet

the conditions of your installation.

Composite Link Settings -External Device

If you need to change an option, select its number from the menu.

• Set option 1, Clocking, to match the external device; i.e., if the external device supplies clocking, set option 1 to “External.”

• Set option 2, Speed, to the same rate as the external device. When you have set all the options for the external device, enter S and press ENTER to store

all configurations. Then enter M and press ENTER to return to the Main Menu. Enter 5 and press ENTER to exit command mode.

19 When you have finished configuring the DataTalker, disconnect the terminal or PC from the

command port and place DIP switch position 3 in the OPEN (up) position to change the data/ command port over to a data channel.

This completes the configuration of the DataTalker. Proceed to Chapter 5, “Installation,” to cable the DataTalker.

DataT alker Owner’s Manual

Chapter 5 - Installation

DataT alker Owner’s Manual

5.1 Introduction

This chapter describes how to connect the DataTalker to your system (Table 5-1) and how to move the RS232/V.35 shunt when a V.35 interface is used (Table 5-2). Then it describes how to power on your DataTalker, check that the unit is cabled and configured correctly, and what to do if you run into problems.

5.2 Cabling

Connecting the DataTalker to your system requires two to four cables, depending on how you intend to use the DataTalker. Each cable connection will be explained in detail in the following procedures. When you cable the unit, you should consider how you configured it in Chapter 4. For instance, if you configured the unit for a sync data channel, you cannot connect a standard RS232C cable to the DA TA/COMMAND connector on the back of the DataTalker. The following cabling procedures relate the cables to the configuration.

Table 5-1. Cabling Procedure

Step Procedure Composite Link

1 Verify that DIP switch position 2 is set for the composite link device being used:

Device DIP Switch 2

Internal OPEN (Up) External Closed (Down)

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

DATA/COMMAND

E&M

FXO FXS

EXTERNAL COMPOSITE

VOICE/FAX CHANNEL 1

DSU/TA

RS232C/V.35

GND

POWER

DIP Switch

Figure 5-1. DIP Switches

2 If you are using your DataTalker with an internal composite link device, connect one of the

two phone cables supplied with your unit to the appropriate internal composite connector:

MMH2834 Modem, Dial-up

Connect the RJ-11 phone cable supplied with the DataTalker from the internal modem DIALUP jack on the back panel to the dial-up line jack.

RJ-11 Phone Cable

DATA/COMMAND

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

FXO FXS

EXTERNAL COMPOSITE

VOICE/FAX CHANNEL 1

DSU/TA

RS232C/V.35

GND

POWER

Internal Modem DIAL-UP Connector

Figure 5-2. Dial-Up Line Connection

Chapter 5 - Installation

MMH2834 Modem, Leased Line

Connect the RJ-1 1 phone cable supplied with the DataTalker from the internal modem LEASED connector on the back panel to the leased line connection.

RJ-11 Phone Cable

VOICE/FAX CHANNEL 2

E&M

DIAL-UP LEASED DIGITAL

VOICE/FAX CHANNEL 1

MODEM

DSU/TA

INTERNAL COMPOSITE

Internal Modem LEASED Connector

FXO FXS

DATA/COMMAND

EXTERNAL COMPOSITE

RS232C/V.35

GND

POWER

Figure 5-3. Leased Line Connection DSU

Connect the RJ-48 phone cable supplied with the DataTalker from the internal DSU/TA DIGIT AL connector on the back panel to the digital line connector.

RJ-48 Cable

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

DSU/TA

DATA/COMMAND

FXO FXS

EXTERNAL COMPOSITE

VOICE/FAX CHANNEL 1

Internal DSU/TA DIGITAL Connector

RS232C/V.35

GND

POWER

Figure 5-4. DSU Line Connection

ISDN T erminal Adapter

Using the RJ-48 cable supplied with the DataTalker, connect the internal DSU/TA DIGITAL connector on the back panel to the ISDN line jack.

RJ-48 Cable

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

DSU/TA

DATA/COMMAND

FXO FXS

EXTERNAL COMPOSITE

VOICE/FAX CHANNEL 1

Internal DSU/TA DIGITAL Connector

RS232C/V.35

GND

POWER

Figure 5-5. ISDN Terminal Adapter Line Connection

DataT alker Owner’s Manual

External Modem, DSU, or ISDN T erminal Adapter

3 If the external device has an RS232 interface, connect the composite link cable supplied with

the DataTalker from the EXTERNAL COMPOSITE RS232C/V.35 connector on the back panel to the external device.

E&M

DIAL-UP LEASED DIGITAL

VOICE/FAX CHANNEL 1

MODEM

DSU/TA

INTERNAL COMPOSITE

Composite Link Cable

FXO FXS

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

GND

POWER

To External Device

Figure 5-6. External Modem, DSU, or Terminal Adapter Connection

If the external device has a V.35 interface, connect a V.35 interface adapter cable (a cable with a 34-pin Winchester male connector on one end and a DB-25S connector on the other end) from the EXTERNAL COMPOSITE RS232C/V.35 connector to the external device. You can order a V.35 interface adapter cable from Multi-T ech (part number 90056210).

If the external device has a V.35 interface, you must move the V.35 shunt from its default RS232 position to the V.35 position. See Table 5-2 for the procedure on how to move the shunt.

Data Channel

4 If you are connecting the data channel to an asynchronous device, such as a PC or other

type of host, connect an RS232C cable from the DA TA/COMMAND connector on the DataTalker to the serial port of the async device.

DIAL-UP LEASED DIGITAL

MODEM INTERNAL COMPOSITE

E&M

VOICE/FAX CHANNEL 1

DSU/TA

RS232C/V.35

EXTERNAL COMPOSITE

DATA/COMMAND

FXO FXS

GND

POWER

DATA/COMMAND Connector

RS232 Cable

Figure 5-7. Data Channel Connection

If you are connecting the data channel to a sync device, connect a cable appropriate for a synchronous interface from the DA TA/COMMAND connector on the DataTalker to the appropriate connector on the sync device.

V oice/Fax Channel

5 If you are connecting the voice/fax channel to a station device (a normal telephone, a KTS

telephone, or a fax machine), connect an RJ-1 1 phone cable from the VOICE/FAX CHANNEL FXS connector on the DataTalker to the station instrument.

RJ-11 Telephone Cable

VOICE/FAX CHANNEL 2

FXO FXS

E&M

DIAL-UP LEASED DIGITAL

MODEM

VOICE/FAX CHANNEL 1

DSU/TA

INTERNAL COMPOSITE

VOICE/FAX

CHANNEL 1

FXS Connector

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

GND

POWER

Figure 5-8. Telephone Connection

Chapter 5 - Installation

If you are connecting the voice/fax channel to the station side of a PBX, connect an RJ-1 1 phone cable from the VOICE/FAX CHANNEL FXO connector on the DataTalker to the station side of the PBX. Refer to the PBX manual for the station side connection.

VOICE/FAX CHANNEL 2

E&M

DIAL-UP LEASED DIGITAL

MODEM

VOICE/FAX CHANNEL 1

DSU/TA

INTERNAL COMPOSITE

VOICE/FAX

CHANNEL 1

FXO Connector

FXO FXS

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

GND

POWER

RJ-11 Phone Cable

Figure 5-9. PBX Connection

If you are connecting the voice/fax channel to a PBX E&M trunk, connect an RJ-48 phone cable from the VOICE/FAX CHANNEL 1 E&M connector on the DataTalker to an E&M trunk connector on the PBX. (Voice/Fax Channel 2 does not have an E&M connector.) Also, run a ground wire from the ground connector on the back of the DataTalker or RackTalker to frame ground on the PBX E&M trunk. Refer to the PBX manual for the trunk connection.

VOICE/FAX CHANNEL 2

E&M

DIAL-UP LEASED DIGITAL

VOICE/FAX CHANNEL 1

MODEM

DSU/TA

INTERNAL COMPOSITE

VOICE/FAX

CHANNEL 1

E&M Connector

FXO FXS

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

GND

POWER

RJ-48 Cable

To PBX

Trunk

Figure 5-10. PBX E&M Trunk Connection

This completes the cabling of your DataTalker. Proceed to Table 5-3 to power on and test your unit.

DataT alker Owner’s Manual

5.3 V.35 Shunt

Table 5-2. V.35 Shunt Procedure

Step Procedure

1 Desktop version: Unplug the power supply from the back of the unit.

Rack version: Remove the unit from the RackTalker rack. Go to step 4.

2 Desktop version only: Turn the unit upside down and remove the two cabinet mounting

screws from the middle of the cabinet.

DATA/

COMXMT RCV FC FXS FXO E&M FAX XMT RCV XSG RSG

COMMAND

VOICE /

FAX 2

VOICE /

ORIG

FAX 1

Data / Voice / Fax Concentrator

RXT FCR RD TM V35 EXT MDM DSU

RSGXSGRCVXMTFAXE&MFXOFXS

COMPOSITE

LINK

STATUS

CD RCV XMT CTS 56 RTS NS OOS

101 MDM / TA

Cabinet Mounting Screws (2)

28.8 OHDBUP

DTR

Figure 5-11. Cabinet Mounting Screws

3 Desktop version only : T urn the cabinet right-side up, tilt the back down slightly, and the base

unit will slide out of the cabinet. 4 Desktop and rack versions: Place the unit with the LEDs facing you. 5 Pry the shunt out of the RS232 socket and insert it into the V.35 socket. Rack version: Go to

step 8.

RS-232 Shunt

V.35 Shunt

1 2 3 4 5 6

Figure 5-12. V.35 Shunt Location (Desktop Version)

6 Desktop version only: Slide the base back into the cabinet with the LEDs toward the front and

the rear grounding tabs pressing against the side of the cabinet.

7 Desktop version only: T urn the unit upside down and replace the two cabinet mounting

screws. 8 Desktop version: Turn the unit right-side up and reconnect the power supply.

Rack version: Slide the unit into the RackTalker card guides and, after ensuring that the

DataTalker is fully seated, fasten the retaining screws.

5.4 Power-On and Checkout

The desktop and rack-mounted versions of the DataTalker differ in how power is applied. The

desktop version has a power switch that you must turn on. The rack version has no power

switch; you apply power by inserting it into a powered-up rack. It is always on as long as the rack

is powered up.

Table 5-3. Power-On and Checkout Procedure

Step Procedure

1 Desktop version: Ensure that the power supply is connected to the unit’s power connector

and an AC outlet. Rack version: Ensure that the DataTalker is properly seated in a RackTalker rack. Tighten the

front panel screws to ensure a good connection with the RackTalker power bus.

2 Desktop version: Apply power (press the power switch on the back of the unit to I [on]).

Rack version: Plug the RackTalker rack into an AC outlet, if it is not already powered up.

Chapter 5 - Installation

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

FXO FXS

VOICE/FAX CHANNEL 1

DATA/COMMAND

EXTERNAL COMPOSITE

E&M

DSU/TA

RS232C/V.35

GND

POWER

Power Switch

Figure 5-13. Power Switch (Desktop Version)

3 Verify the states of the following composite link LEDs. The LED should be on for each

installed feature and off for each uninstalled feature:

Composite Link Device LED

Internal 28.8K bps modem MDM Internal 56K DSU DSU Internal ISDN terminal adapter T A External modem, DSU, or TA EXT External V .35 interface V35

Data / Voice / Fax Concentrator

RXT FCR RD TM V35 EXT MDM DSU

COMPOSITE

LINK

STATUS

CD RCV XMT CTS 56 RTS NS OOS

101 MDM/TA

DTR

28.8 OHDBUP

DATA/

COMMAND

VOICE /

FAX 2

VOICE /

ORIG

FXS FXO E&M FAX XMT RCV XSG RSGCOMXMT RCV FC

FAX 1

RSGXSGRCVXMTFAXE&MFXOFXS

Figure 5-14. Front Panel

4 Establish a link with the remote DataTalker if the local DataTalker is not configured to link

automatically.

5 Verify that the composite link is communicating with the remote DataT alker. The RD LED

should be off. The following LEDS should be on: Terminal adapter: CD, RCV, XMT, CTS, DTR, and 2B (if so configured)

Modem: CD, RCV, XMT, CTS, and DTR DSU: CD, RCV, XMT, CTS, and RTS

DataT alker Owner’s Manual

6 Verify that the voice/fax channel is connected at the remote site. One of the following

conditions will apply depending on how your local and remote sites are set up:

• If the local voice/fax channel is connected to a telephone switch in your facility (FXO

connection) and the remote site has just a telephone (FXS connection), dial the number of

the extension plugged into the FXO jack of the local DataTalker and listen for a ringing at the

remote site. If a voice conversation can take place, the connection is good.

• If the local and remote DataTalkers have only a telephone connected to the voice/fax

channel, pick up the telephone hand set and listen for a ringing at the remote site. If a voice

conversation can take place, the connection is good.

• If the local and remote DataTalker each has an E&M trunk connection to its PBX, follow the

PBX procedure for dialing any extension at the remote PBX. If a voice conversation can take

place, the connection is good. 7 Now have the remote site call the main officeto see if they can transfer data and establish a

phone conversation. If the remote site is set up for DTR dialing, they only have to power up

the remote DataTalker to dial; if it is a leased line connection, they have to pick up the

telephone to make the main office phone ring; if it is a dial-up situation, they must dial the

main office number to make its phone ring. 8 If the above functional tests do not all work, you must conduct further tests. Analyze the

failure one function at a time to determine what does and doesn’t work. The DataTalker has

three basic functions:

• Composite link

• Data channel

• Voice/fax channel

Composite Link

If the composite link is down, refer to the troubleshooting procedures in Chapter 7. Also, look

for the following items:

• The composite link cabling does not match the link device. Ensure that the link configuration

matches how the link is cabled.

• The shunt is in its default position when an external V.35 interface device is connected. See

Table 5-2.

• The remote site (home office) cannot contact the main office when using a dial-up link. DTR

dialing commands may be incorrect; refer to Chapter 6 while verifying the main office

telephone number.

• DIP switch position 2 is set for the wrong device. See the cabling procedure in Table 5-1.

• The remote site cannot contact the main office. The remote site has a wrong phone number

for the main office DataTalker or the leased line is not set up by the telephone company.

Data Channel

If the channel device (the device connected to the data channel) is not communicating with

the DataTalker, check the following items:

• DIP switch position 3 is closed (down). Flip the position 3 switch up.

• The data channel configuration is wrong. See Chapter 4.

• The async or sync cable is wrong. See Appendix C.

Chapter 5 - Installation

V oice/Fax Channel

If the voice/fax channel is not communicating with the remote site or the remote site cannot communicate with you, check the following items:

• The channel configuration does not match how the channel is cabled. V erify that the channel configuration and cabling match.

• The remote DataTalker does not match the remote interface type. See Chapter 4.

• The telephone or fax machine is connected to the wrong connector . Verify the cable connection.

• The telephone must be an analog phone. Check with your telephone people to ensure that the telephone is not a digital instrument.

• The line connection to your local telephone switch is a digital line. Have your telephone people provide an analog line.

This completes the installation of your DataTalker.

DataT alker Owner’s Manual

Chapter 6 - Menus

DataT alker Owner’s Manual

6.1 Introduction

The menu system for the DataTalker provides a set of user-friendly configuration menus that are accessible from a main menu. The Main Menu contains five options that allow you to configure your DataTalker, display statistics, reset options, run diagnostic tests, and exit the command mode.

Main Menu 1 - Configurations

2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SETUP

Selection : _

To select one of the options from the Main Menu, enter the number corresponding to the option and press ENTER. A submenu is displayed that allows you to configure your DataTalker; display statistics; reset a voice/fax channel, data channel or the complete unit; or run one of many diagnostics tests.

6.2 Configurations Menu

From the Configurations menu you can configure the data port, voice/fax channel(s), or composite link; display factory defaults; store all current configurations; or return to the Main Menu.

Configurations 1 - Data Port Configuration

Selection : _

To configure the data port, voice/fax channel(s), or composite link, enter the corresponding option number and press ENTER. To change to factory defaults, enter number 4 and press enter. You can set factory defaults for the entire unit or for only the composite link, data channel, or the voice/fax channels. Select the option you wish to change, and a message will appear on your screen saying to wait for 10 seconds. Then press ENTER to return to the Main Menu. To store the current configuration, enter S and press ENTER. To return to the Main Menu, enter M and press ENTER.

Chapter 6 - Menus

6.2.1 Data Port Configuration

The Data Port Configuration menu allows you to configure the data channel for either

asynchronous or synchronous operation, depending on the type of device connected to the

channel. If the port is configured for synchronous operation, refer to Sync Data Port

Configuration.

When the port is configured for asynchronous operation, options such as speed, flow control, and

pacing may need to be changed. The following Data Port Configuration menu displays the default

parameters for async mode of operation:

Data Port Configuration 1 - Async/Sync: Async

The Async/Sync option configures the port for either asynchronous or synchronous operation.

When an asynchronous device such as a PC or a host computer is connected to the channel, the

data port needs to be configured for asynchronous operation. The default for this option is Async.

The Speed option needs to be set when the async device is operating at a channel speed other

than 19.2k. When the data channel is connected to an asynchronous device, the channel baud

rate is from 300 bps to 1 15.2K bps. The default channel speed is 19.2k bps.

The Word Length option sets the number of bits in a word. The word length range is 5 to 8 bits.

The default is 8 bits.

The Stop Bits option sets the number of stop bits. The number of stop bits is 1, 1.5, 2. The

default is 1 bit.

The Parity option sets parity for odd, even or none. Under normal conditions, parity is set to

none. The default is none.

The Flow Control option allows for two types of flow control: the software-based XON/XOFF and

the hardware-based Clear to Send (CTS). The default condition is CTS. Flow control is the

means by which data flow from the channel device into the DataTalker is controlled. Flow control

is necessary when the data handling capacity of the data channel cannot keep up with the

volume of data sent to it. When the channel device controls data flow to itself, it is called pacing

(see Pacing option). The combination of flow control from the channel device and pacing to the

channel device is how data transfers are regulated so that no data is lost.

DATATALKER-INITIATED

FLOW CONTROL

Channel Device

Flow control stops the input of data to the DataTalker

DATA DATA

DataTalker DataTalker

CHANNEL DEVICE-

INITIATED PACING

Channel Device

Pacing stops the output of data from the DataTalker

The Enq/Ack Flow Control option is a special flow control protocol used in Hewlett Packard

computer systems. This option is sometimes referred to as Enquire/Acknowledge flow control

because it’s based on the computer sending an enquiry (ENQ) and then expecting an

acknowledgment (ACK). The default condition for this option is off.

DataT alker Owner’s Manual

The Echo option enables data entered on the channel device keyboard to be returned to the channel device monitor. The purpose of this option is so that an operator will not experience undue delays in seeing entered data appear on their monitor. The default condition for the echo option is off.

The Pacing option controls the data flow to the channel device. This option only applies to the async mode of operation. Pacing is necessary when the flow of data to a device operating on the data channel is more than it can process. If the channel device cannot process the volume of data sent to it, then the pacing option should be turned on. The pacing method used is determined by the type of flow control. The default condition is for this option to be turned off.

The EIA Pass Through option allows the channel device to receive EIA control signals through the DataTalker. This option only applies during the async mode of operation. Since, in normal interactive operation, the existence of a DataTalker should be transparent to the user, the EIA pass through option allows a terminal to operate as if it were connected directly to a communications line and not through a DataTalker. This is done by allowing selected pins (signals) on one DataTalker to be passed through to selected pins on a remote DataT alker. The default condition is for this option to be turned off. The following diagram shows how the EIA pass through option routes the selected signals:

IN 4 IN 20 IN 25

OUT 8

OUT 6

UT 22

DataTalker

Composite Link

Facility

DataTalker

8 OUT 6 OUT 22 OUT

4 IN 20 IN 25 IN

The Pass Xon option enables the XON/XOFF flow control signals to be passed on to the channel device. This option only applies during the async mode of operation. This option has to be used in conjunction with the software-based XON/XOFF flow control option. The default condition is for this option to be turned off, and normally it should remain off.

Chapter 6 - Menus

6.2.2 Sync Data Port Configuration

The Data Port Configuration menu allows you to configure the data channel for either asynchronous or synchronous operation, depending on the type of device connected to the channel.

When the port is configured for synchronous operation, the following Data Port Configuration menu displays the default parameters:

Data Port Configuration 1 - Async/Sync: Sync

2 - Speed: 19200 3 - Clocking: Internal 4 - Idle Condition: Flags 5 - NRZ/NRZI Encoding: NRZ 6 - CRC Preset: All 1s 7 - Inter-frame Timer: Off

Store All Configuations

S M - Main Menu P - Previous Menu Selection : _

The Async/Sync option configures the port for either asynchronous or synchronous operation. When a synchronous device such as a LAN bridge or router is connected to the channel, the data port needs to be configured for synchronous operation.

The Speed option needs to be set when the sync device is operating at a channel speed other than 19.2k. When the data channel is connected to a synchronous device, the channel baud rate is from 300 bps up to 128K bps. The default channel speed is 19.2k bps.

The Clocking option needs to be set for either internal or external clocking. When the DataTalker is providing the clocking, the option needs to be set for internal clocking. When clocking is provided by the synchronous device, this option must be set for external clocking. The default for the clocking option is internal clocking.

The Idle Condition option must be set to match the idle condition of the synchronous device connected to the data port. The idle condition must set when the synchronous data line is in an idle condition (i.e., no data frames are being transmitted). The default condition is to continuously send SDLC flags (Flags). The other idle condition is the mark state (Mark). The transmit LED will be off during idle time if the synchronous device is in the mark state during idle conditions.

The NRZ/NRZI Encoding option refers to the fact that synchronous data can be encoded by using either the NRZ (Non-Return to Zero) or NRZI (Non-Return to Zero Inverted) method. This option must match the synchronous device’s encoding. The default is NRZ. Most synchronous devices are configurable. If a synchronous device is not configurable, it is set to NRZ. Refer to the device’s user documentation for the encoding method.

The CRC Preset option allows the user to specify whether the polynomial used to calculate the CRC for each frame is present to all 1s or all 0s. This option must match the synchronous device’s CRC setting. The default is All 1s.

The Inter-frame Timer option can be changed to make the DataTalker wait a specified length of time between frames being transmitted on the data channel. The user can choose delay times of 2,5,10 and 15 milliseconds. A typical use for this parameter is to simulate transmission delays encountered with equipment that toggles hardware signals after transmission of each frame, like PC cards used to connect to legancy systems. The following options can be specified for the timer: Off, 2mS, 5mS, 10mS, and 15mS. The default is off.

DataT alker Owner’s Manual

6.2.3 Voice/Fax Channel Configuration

The Voice/Fax Channel Configuration menu is displayed only if the second voice/fax channel card is installed in the DataTalker. If only one voice/fax channel is installed in the DataTalker, this menu does not appear. If you select the Voice/Fax Channel(s) Configuration option from the Configurations menu when you have only one voice/fax channel, the Voice/Fax Channel 1 Configuration menu is displayed:

Voice/Fax Channel Configuration

1 - Voice/Fax Channel 1 Configuration 2 - Voice/Fax Channel 2 Configuration S - Store All Configuations M - Main Menu P - Previous Menu

Selection: _

To configure voice/fax channel 1, enter number 1 and press ENTER. To configure the second voice/fax channel 2 (if installed), enter number 2 and press ENTER. The options for both voice/ fax channels are the same. To return to the previous menu, enter P (upper or lower case) and press ENTER. To return to the Main Menu, enter M and press ENTER.

Voice/Fax Channel 1 Configuration

The Voice/Fax Channel 1 Configuration menu allows you to select the voice/fax channel 1 operating conditions:

Voice/Fax Channel 1 Configuration 1 - Destination Channel : 1

Selection : _

The Destination Channel option selects the voice/fax channel at the remote DataTalker that will receive the voice/fax traffic. The options are 1 for the remote voice/fax channel 1 and 2 for the remote voice/fax channel 2. The default is 1.

The Digitizing Rate option selects from two digitized or compressed rates of 9600 and 16000 bps. The default is 9600 bps. Note that with the silence suppression option, less bandwidth is used.

The Output Level Attentuation option selects the output signal level of the voice/fax channel transmission. This will change the volume level that the person at the receiving DataTalker hears. As the output level attentuation increases, the amplitude decreases. The signal levels are incremented in decibel levels of 0.75 dB and range from zero to 31. You must enter two digits. No signal level attentuation is 0 dB.

Chapter 6 - Menus

The output level attentuation needs to be set at the DataTalker that is receiving (hearing). Increasing the output level gain at the transmitting DataTalker will have no affect on the loudness heard by the person at the receiving DataTalker:

DataTalker

Talk

Sounds OL 2db Louder Increase 2db

PSTN

DataTalker

OL Sounds 2db Increase Louder 2db

Talk

Note: For the best results, increase or decrease both the local output level (OL) and remote input level (IL) settings by a small amount to change the volume level heard at the local voice/fax channel.

The default settings are as follows:

Configuration Local Remote

IL OL IL OL

FXS to FXO 4061 FXS to FXS 3 12 3 12 E&M to E&M (4-wire) 3434

The Input Level Gain option selects the gain of the input voice/fax signal for voice/fax channel. As the input level gain increases, the volume level increases. The input level gain ranges from 0 to 24 in increments of 1db with 0db producing no gain. T wo digits have to be entered.

When the input level on the local DataTalker is adjusted, the volume level heard on the remote DataTalker will change accordingly. The input level gain needs to be set on the transmitting DataTalker (talking). This will increase the volume that the person at the receiving DataTalker hears. To increase the input level gain at the receiving DataTalker will have no affect on what this person hears.

DataTalker DataTalker

IL Talk Increase 2db

Hear Produces 2db Louder Volume

PSTN

Hear 2db Louder

IL Talk Increase 2db

Note: For best results, increase or decrease both the local output level (OL) and remote input level (IL) settings by a small amount.

The default settings are as follows:

Configuration Local Remote

IL OL IL OL

FXS to FXO 4061 FXS to FXS 3 12 3 12 E&M to E&M (4-wire) 3434

The Silence Suppression option keeps moments of silence from using up bandwidth on the composite link. The options are Off, Medium, and Maximum. Typically, a voice conversation is 50 to 60% silence. Silence suppression is helpful when using a slow composite link speed such as

19.2K bps. When silence suppression is off, all sound passes through the link, even silence. Silence suppression is active when there is no activity on the voice/fax channel. The maximum setting increases the volume necessary for sound to be sent over the link.

DataT alker Owner’s Manual

The Local Interface Type option configures the local voice/fax channel interface. The options are for an FXS, FXO, or E&M interface. When the voice/fax channel is connected to a telephone set or fax machine, the local interface type must be FXS. When the voice/fax channel is connected to the station side of a PBX, the local interface type must be FXO. When the voice/fax channel is connected to a PBX E&M trunk, the local interface type must be E&M. When the local DataTalker is configured for an FXO interface, the remote DataT alker must be configured for an FXS interface. FXS to FXS is another local-to-remote interface. When used to connect PBXs, both local and remote DataTalkers must be configured for E&M.

The Ground/Loop Start (FXS) option selects between ground start and loop start. Select Ground when the DataTalker local interface type is FXS ground start and the remote interface is E&M wink. The default is Loop.

The 2 or 4 Wire (E&M) option selects how the DataTalker is connected to the PBX E&M trunk. The choice is between 2- and 4-wire connections. The default is 4 Wire.

The Dialtone/Wink (E&M) option slects between dialtone and wink signals when the interface type is E&M. The default is Dialtone.

The Wink Timer (E&M) option is used in the E&M interface to delay the sending of address information from the remote MultiMux. The wink timer range is from 100 to 350 milliseconds. The default delay is 250 ms.

The Remote Interface Type option informs the local voice/fax channel of how the remote channel may be configured. The options are for an FXS, FXO, or E&M interface. Caution: This option does not actually change the remote interface. You may have to contact the remote site for verification of its actual interface. When the remote voice/fax channel is connected to a telephone set or fax machine, the remote interface type must be FXS. When the remote voice/fax channel is connected to the station side of a PBX, the remote interface type must be FXO. When the remote voice/fax channel is connected to a PBX E&M trunk, the remote interface type must be E&M. If the remote DataTalker is configured for an FXO interface, the local DataTalker must be configured for an FXS interface. FXS to FXS is another remote-to-local interface. When used to connect PBXs, both local and remote DataTalkers must be configured for E&M. If erratic voice/ fax operation is noticed, the remote interface may be incorrectly set at the local DataTalker.

The 2 or 4 Wire (E&M) option selects how the DataTalker is connected to the PBX E&M trunk. The choice is between 2- and 4-wire connections. The default is 4 Wire.

The Dialtone/Wink (E&M) option slects between dialtone and wink signals when the interface type is E&M. The default is Dialtone.

Chapter 6 - Menus

6.2.4 Composite Link Configuration

The Composite Link Configuration menu that is displayed depends on whether an internal or external device is installed as well as on the position of DIP switch position 2. If DIP switch position 2 is in the up (OPEN) position and an internal MMH2834 modem installed, the Composite Link Settings menu for the MMH2834 modem is displayed. If DIP switch position 2 is in the up (OPEN) position and an internal DSU is installed, the Composite Link Settings menu for a DSU is displayed. If DIP switch position 2 is in the up (OPEN) position and an internal ISDN terminal adapter is installed, the Composite Link Settings menu for a terminal adapter is displayed. If DIP switch position 2 is in the down (closed) position, the Composite Link Settings menu for an external device is displayed.

Composite Link Settings - Internal MMH2834

The Composite Link Settings - Internal MMH2834 menu allows you to configure the composite link for an MMH2834 modem. Additional AT commands may be needed to set up the modem. (See Appendix F.)

Composite Link Settings - Internal MMH2834

- Enter AT commands to 2834 2 - On-Line XMT Rate: 28800 3 - Speed Setting: 33600 4

Dial/Leased: Dial

5 - 2 or 4 Wire: 2 Wire

Answer/Originate: Answer

6 7 - Transmit Level -10db 8 - DOD/DOI: On 9 - DOI Timer: 03min 10 - DOD Toggle DTR: 40sec S - Store All Configurations M - Main Menu P - Previous Menu Selection : _

The Enter AT Commands to 2834 option allows you to use AT commands to reconfigure the MMH2834 through the command port. For example, to set up the MMH2834 for DTR dialing, select this option and enter the following commands:

ATDT[Number to Dial]N0 AT$D1 (DTR dialing command) AT&W (Store new parameters to memory) Q (Return to menus)

Additional AT commands are described in Appendix F. The On-Line T ransmit (XMT) Rate option displays the on-line transmit rate of the composite link

device. If the compoiste link is not up, off-line is displayed. The On-Line XMT Rate may be different than the Speed Setting.

The Speed Setting option configures the link port for a speed of 9600, 14400, 19200, or 33600 bps. A 2834 Speed Setting submenu is displayed when this option is selected. The default speed setting is 33600 bps.

2834 Speed Setting 1 - 33600 2 - 19200 3 - 14400 4 - 9600 P - Previous Menu Selection : _

DataT alker Owner’s Manual

The Dial/Leased option selects the type of connection to the telephone company. If the data line provided by the telephone company is a dial-up line, then you must select the dial option. The options are Dial and Leased with the default being Dial.

The 2 or 4 Wire option selects how the MMH2834 modem is connected to the telephone line. E.g., if the telephone company is supplying a 4-wire lease, select the 4 Wire option. The options are 2 Wire and 4 Wire, with the default being 2 Wire.

The Answer/Originate option selects the line frequency used when leased line operation is selected. When dial operation is selected, it enables or disables auto answer. For leased line operation, one MMH2834 modem should have Originate selected and the other MMH2834 should have Answer selected. For dial operation, select Answer if the MMH2834 needs to answer an incoming call.

The T ransmit Level option selects the output transmission level in decibels. The options are 0 and -10db, with a default of -10db. The closer the transmit level is to zero the greater the level (strength) of the output signal. This option should only be changed under the direction of MultiTech Tech Support personnel.

The Dial On Demand (DOD)/Disconnect On Inactivity (DOI) option drops DTR to the MMH2834 modem to disconnect if the inactivity timer has expired and raises DTR to reconnect if the voice/fax or data channel goes active. The default is to have the DOD/DOI option turned off. If this option is off, options 9 and 10 do not appear on the menu.

The Disconnect on Inactivity (DOI) Timer option signals the MMH2834 to hang up the composite link by dropping DTR to it when the timer expires. When the DOI Timer option is selected, a submenu is displayed in which you can enter the number of minutes that the inactivity timer is set for. The range of the timer in minutes is 01 to 99. The default setting for the timer is three minutes.

Disconnect On Inactivity Timer. This is the timer for inactivity -> DTR drop.

x - Enter the number of minutes P - Previous Menu Selection : _

The Dial On Demand (DOD) Toggle DTR option activates the DTR Toggle Timer. When activity on the voice/fax or data channels cause DTR to go high telling the MMH2834 modem to DTR dial, this timer is started. If the connection is established before this timer expires, the timer is stopped. Otherwise, when the timer expires, DTR is toggled to tell the MMH2834 to dial again and this timer is restarted. The default is 40 seconds.

DTR Toggle Timer. This is the timer to toggle DTR if the link does not come up.

x - Enter the number of seconds(0 is off) P - Previous Menu Selection : _

Chapter 6 - Menus

Composite Link Settings - Internal 56K DSU

The Composite Link Settings - Internal DSU menu allows you to configure the composite link for a DSU. The default parameters for an internal DSU are displayed in the following menu:

Composite Link Settings - Internal DSU

1 - Speed: 56k 2 - Clocking: DDS S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

The Speed option sets the speed of the internal DSU. The options are 2400, 4800, 9600, 19200 and 56000 bps with the default being 56K bps.

The Clocking option allows the internal DSU to accept timing from its internal timing oscillator or from the DDS network’s receive bipolar signal. The options are Internal and DDS clocking with the default being DDS clocking.

Composite Link Settings - Internal TA

The Composite Link Settings - Internal TA menu allows you to configure the composite link for an ISDN terminal adapter using the terminal adapter’s built-in configuration menu.

Composite Link Settings - Internal TA 1 - On-Line XMT Rate: 128000

2 - Configure TA 3 - DOD/DOI: Off S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

The Link T ransmit Rate option displays the speed that the DataTalker is senseing on the composite link.

The Configure TA option allows you to verify and/or change the terminal adapter’ s configuration using its internal configuration menu. After you select the option, wait five seconds, then enter AT!V to access the terminal adapter’s configuration menu. To change a setting, enter the menu choice number and press ENTER. Refer to the ISDN Terminal Adapter Owner’s Manual for descriptions of the terminal adapter settings. To exit the terminal adapter’s configuration menu, enter CTRL+X; then, to return to the DataTalker’s Composite Link Settings - Internal T A menu, press ENTER, Q.

DataT alker Owner’s Manual

The Dial On Demand (DOD)/Disconnect On Inactivity (DOI) option drops DTR to the terminal adapter to disconnect if the inactivity timer has expired and raises DTR to reconnect if the voice/ fax or data channel goes active. When this option is turned ON, a new menu is displayed. The default is to have the DOD/DOI option turned off.

Composite Link Settings - Internal TA 1 - On-Line XMT Rate: 128000

2 - Configure TA 3 - DOD/DOI: On 4 - DOI Timer: 03min 5 - DOD Toggle DTR: 40sec S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

The Disconnect on Inactivity (DOI) Timer option signals the terminal adapter to hang up the composite link by dropping DTR to it when the timer expires. When the DOI Timer option is selected, a submenu is displayed in which you can enter the number of minutes that the inactivity timer is set for. The range of the timer in minutes is 01 to 99. The default setting for the timer is three minutes.

Disconnect On Inactivity Timer. This is the timer for inactivity -> DTR drop.

x - Enter the number of minutes P - Previous Menu Selection : _

The Dial On Demand (DOD) Toggle DTR option activates the DTR Toggle Timer. When activity on the voice/fax or data channels cause DTR to go high telling the terminal adapter to DTR dial, this timer is started. If the connection is established before this timer expires, the timer is stopped. Otherwise, when the timer expires, DTR is toggled to tell the terminal adapter to dial again and this timer is restarted. The default is 40 seconds.

DTR Toggle Timer. This is the timer to toggle DTR if the link does not come up.

x - Enter the number of seconds(0 is off) P - Previous Menu Selection : _

Chapter 6 - Menus

Composite Link Settings - External Device

The Composite Link Settings - External Device menu allows you to configure the composite link for an external device. The default parameters for an external device are displayed in the following menu:

Composite Link Settings -External Device

The On-Line T ransmit (XMT) Rate option displays the on-line transmit rate of the composite link device. If the composite link is not up, Off-Line is displayed.

The Clocking option allows the internal composite link to accept timing from either its internal timing oscillator or from a synchronous full-duplex external device. The options are Internal and External clocking, with a default of External.

The Back to Back option is used to test the port by connecting two DataTalkers together using a back-to-back cable. The options are On and Off with a default of Off.

The Dial On Demand (DOD)/Disconnect On Inactivity (DOI) option to the external device to disconnect if the inactivity timer has expired and raises DTR to reconnect if the voice/fax or data channel goies active. The default is to have the DOD/DOI option turned off. If this option is of f, options 5 and 6 do not appear on the menu.

The Disconnect on Inactivity (DOI) Timer option signals the external device to hang up the composite link by dropping DTR to it when the timer expires. When the DOI Timer option is selected, a submenu is displayed in which you can enter the number of minutes that the inactivity timer is set for. The range of the timer in minutes is 01 to 99. The default setting for the timer is three minutes.

Disconnect On Inactivity Timer. This is the timer for inactivity -> DTR drop.

x - Enter the number of minutes P - Previous Menu Selection : _

The Dial On Demand (DOD) Toggle DTR option activates the DTR Toggle Timer. When activity on the voice/fax or data channels cause DTR to go high telling the external device to DTR dial, this timer is started. If the connection is established before this timer expires, the timer is stopped. Otherwise, when the timer expires, DTR is toggled to tell the external device to dial again and this timer is restarted. The default is 40 seconds.

DTR Toggle Timer. This is the timer to toggle DTR if the link does not come up.

x - Enter the number of seconds(0 is off) P - Previous Menu Selection : _

DataT alker Owner’s Manual

6.3 Statistics

The Statistics menu allows you display or clear the composite link statistics, or return to the previous menu or to the Main Menu.

Statistics 1 - View Composite Link Statistics

2 - Clear Composite Link Statistics M - Main Menu P - Previous Menu

Selection : _

To display or clear the composite link statistics, enter the corresponding option number and press ENTER. To return to the previous menu, enter P and press ENTER. To return to the Main Menu, enter M and press ENTER.

The Composite Link Statistics display provides information concerning the operation of the composite link that can aid you in testing for problems on the link.

Composite Link Statistics Elasped Time : 00 Days 00 Hours 00

Minutes Data Blocks Transmitted : 0 Data Blocks Retransmitted : 0 Data Blocks Received : 0 Receive Block Errors : 0 Voice/Fax Blocks Transmitted : 0 Voice/Fax Blocks Received : 0 Link Alarms : 0 Remote Downs : 0

Comparing the number of blocks transmitted with the number of retransmits needed to get data over the link can indicate a line problem. Comparing the blocks received and receive block errors indicates the same problem from the other end of the link. Comparative numbers that you might encounter could be 10,000 blocks transmitted (or received) with 500 or 1000 retransmits (or receive block errors). Link alarms simply tell you that there are some sort of problems on the link. You will find that the link alarms numbers will correspond to the retransmit and receive block numbers. Specifically, a link alarm means that it has been 10 seconds since the DataTalker has received an acknowledgement. Normally, three acknowledgements are received during a 10second period.

The remote down entry means that the DataTalker has sent data 30 times and could not get it through (the link has been broken).

6.4 Reset Options

The Reset Options menu allows you to reset the unit, the data and voice/fax channels, each voice/fax channel, or just the data channel.

Reset Options 1 - Reset Unit

2 - Reset Data and Voice/Fax Channels 3 - Reset Voice/Fax Channel 1 4 - Reset Voice/Fax Channel 2 5 - Reset Data Channel M - Main Menu P - Previous Menu

Selection : _

To reset the unit, enter 1 and press ENTER. To reset the data and voice/fax channels, 2 and press ENTER. To reset either voice/fax channel, enter the appropriate number and press ENTER. To reset just the data channel, enter 5 and press ENTER. To return to the previous menu, enter P and press ENTER. To return to the Main Menu, enter M and press ENTER.

6.5 Diagnostic Tests

Chapter 6 - Menus

The Diagnostic menu allows you to run three different tests, display the DIP switch settings, and return to the previous menu or the Main Menu. The loop test option produces a submenu that allows either a data loopback function or voice loopback function. (Tests for the ISDN terminal adapter are described in the ISDN Terminal Adapter Owner’s Manual.)

Diagnostics

1 - Loop Test 2 - Memory Test 3 - Watch Dog Test 4 - Dip Switch Definitions and Settings 5 - Product and Firmware ID M - Main Menu P - Previous Menu

Selection : _

The Loop T est option checks the operation of the local unit. When this option is selected, a loop test menu is displayed. See “Loop Tests” in section 6.5.1.

The Memory Test option checks the on-board memory. When this option is selected, a warning message is displayed. The memory test will destroy all stored configurations. See “Diagnostic Testing” in section 7.12.

The Watch Dog Test option verifies the watch dog timer circuitry. A message is displayed that the test will reset the unit. See “Diagnostic Testing” in section 7.12.

The Dip Switch Definitions and Settings option displays a screen that shows the definition of each switch and its current setting.

The Product and Firmware ID option defines the product and its current firmware release version.

DataT alker Owner’s Manual

6.5.1 Loop Tests

The Loop Tests menu provides either a voice loopback or a composite link loopback that depends on the type of link device.

Loop T ests 1 - Voice Loopback

2 - Composite Link Loopback M - Main Menu P - Previous Menu

Selection : _

The following messages are displayed, depending on the loopback test.

V oice Loopback Test

Voice Loop Test. If you have one voice channel, it loops to itself. If you have two voice channels, voice channel 1 loops to voice channel 2.

Hit any key to end the test. While the test is running, speak into the mouthpiece of the telephone connected to the

DataTalker. If you hear your voice over the speaker, the circuit is okay.

Internal DSU Test

Your internal DSU is in loopback now. The DSU loops both local and remote. To loop data exit command mode.

To end loopback, reset the unit.

External Device T est

To perform a composite link loopback test, put your external link device into loopback.

Internal MMH2834 T est

To perform a composite link loopback test, go into the composite link configuration menu and send the command AT&M1U to the modem. Wait for the “Connect” message, then enter q. After the q, you can exit command mode to loop data.

To end loopback, reset the unit.

6.6 Configure Remote Unit

Configuration menu option 5 is dependent on the position of DIP switch SW-5. If DIP switch SW 5 is in the Open (Up) position (MMV8/16/32), the configuration menu allows for the DataTalker to set parameters to communicate with with other MultiMux products (i.e., MMV800, MMV1600, or MMV3200 series). If the DIP switch is in the Down (Closed) position (Configure Remote Unit), the local unit can display and change the configuration of the remote unit. The default for this DIP switch is the Open (Up) position.

When the position of DIP switch SW-5 is in the Down (Default) position, the Configuation menu appears as follows:

Configurations 1 - Data Port Configuration

Selection : _

Chapter 6 - Menus

When the composite link is established with the remote unit, option 5 is selected, and async mode is enabled, the remote unit’s Main menu appears on the local unit’s monitor. All menus that appear are from the remote unit. Any changes made af fect the remote unit.

6.6.1 MMV8/16/32 Configuration Options

When DIP switch SW-5 is in the Open (up) position, the Configuration menu appears as follows:

Configurations 1 - Data Port Configuration

Selection : _

If option 5 is selected, the MMV8/16/32 menu is displayed and the source and destination nodes and the source and destination channels can be selected.

MMV8/16/32 Configurations Options 1 - Unit Source Node :00

2 - Data Destination Node :01 3 - Data Source Channel :01 4 - Data Destination Channel :01 5 - Voice/Fax Ch. 1 Dest. Node :01 6 - Voice/Fax Ch. 2 Dest. Node :01 S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

DataT alker Owner’s Manual

The Unit Source Node option specifies the node number of the local node. This number has to be unique and any number from 0 to 9. Remember that the node number will be used by other nodes.

The Data Destination Node option specifies the node number of the remote node. This number has to be unique and any number from 0 to 9.

The Data Source Channel option specifies the source channel to which the destination channel is communicating with. The Data Source Channel options are 1 or 2 and the default is 1.

The Data Destination Channel option specifies the destination channel to which the source channel is communicating with. The Data Destination Channel options are 1 or 2 and the default is 1.

The Voice/Fax Ch. 1 Destination Node option specifies the node number of the remote node for Voice/Fax channel 1. This number must be unique and any number from 0 to 9. The default for this option is 1.

The Voice/Fax Ch. 2 Destination Node option specifies the node number of the remote node for Voice/Fax channel 2. This number must be unique and any number from 0 to 9. The default for this option is 1.

6.6.2 Quick Setup

The Quick Setup option (Option 6 in the main menu) allows you to configure your DataTalker by answering a few questions and then following a set of installation instructions. The following description

Warning: The memory test will destroy all stored configurtions. Do you wish to continue (y/n)?

If you answer Yes to this question, the next question is presented. If you answer No to this question, you are returned to the Main Menu.

Is this a home/small office application? (Y/N/Q)

If you answer Yes to this question, the next question is presented.

Will this unit be installed at the main office? (Y/N/Q)

If you answer Yes to this question, the uint is configured for a main office application and installation instructions are presented for cabling your unit. Refer to Table 6-1 for the main office cabling procedure.

If you answer No to this question, the next question asks you:

Enter the number to dial the main office:

You need to enter a 7-digit telephone number if you are using the public telephone service. Y ou do not need to add a hyphen between the first three digits and the last four digits. If you are interPBX, you need to enter only the 4-digit number. When the telephone number is entered, the unit will configure itself based on your input and the installation instructions will be presented to cable your unit. Refer to Table 6-2 for home office cabling procedure.

Chapter 6 - Menus

Table 6-1. Main Office Installation

Step Procedure

1 Voice/Fax - Plug an analog PBX extension into the FXO jack on the back of the Data Talker.

VOICE/FAX CHANNEL 2

DATA/COMMAND

FXO

VOICE/FAX CHANNEL 1

FXS

RS232C/V.35

EXTERNAL COMPOSITE

0 1

RJ11 Phone Cable

DIGITAL

LEASED

DIAL-UP

MODEM DSU

VOICE/FAX CHANNEL 1 FXO Connector

Table 6-1. Main Office Installation

2 Composite Link - Plug the dial up phone line into the dial-up jack on the back of the Data

Talker.

MMH2834 Modem Dial-up

RJ-11 Phone Cable

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

VOICE/FAX CHANNEL 1

DSU/TA

RS232C/V.35

EXTERNAL COMPOSITE

POWER

DATA/COMMAND

FXO FXS

E&M

Internal Modem DIAL-UP Connector

MMH2834 Modem Leased Line

RJ-11 Phone Cable

VOICE/FAX CHANNEL 2

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

VOICE/FAX CHANNEL 1

DSU/TA

FXO FXS

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

POWER

Internal Modem LEASED Connector

Digital DSU

RJ-48 Cable

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

VOICE/FAX CHANNEL 1

DSU/TA

FXO FXS

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

POWER

GND

Internal DSU/TA DIGITAL Connector

DataT alker Owner’s Manual

3 Data Port - Plug the host computer into the Data/Command port and put dip switch 3 up

(located on the side of the Data Talker).

FXO FXS

E&M

DIAL-UP LEASED DIGITAL

MODEM

VOICE/FAX CHANNEL 1

DSU/TA

INTERNAL COMPOSITE

DATA/COMMAND Connector

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

GND

POWER

RS232 Cable

Configuration and installation is complete. To view or change the current configurations, select option 1 from the main menu. Press any key to continue. Storing parameters. Resetting unit. Please wait 10 seconds. Then hit ENTER to display the Main Menu.

Chapter 6 - Menus

Table 6-2. Home Office Installation

Step Procedure

1 Voice/Fax - Plug your telephone into the FXS jack on the back of the Data Talker.

RJ-11

Phone

Cable

VOICE/FAX CHANNEL 2

DIAL-UP LEASED DIGITAL

MODEM

DSU/TA

INTERNAL COMPOSITE

VOICE/FAX

CHANNEL 1

FXS Connector

VOICE/FAX CHANNEL 1

EXTERNAL COMPOSITE

DATA/COMMAND

FXO FXS

E&M

2 Composite Link - Plug the dial up phone line into the dial-up jack on the back of the Data

Talker.

MMH2834 Modem Dial-up

RJ-11 Phone Cable

RS232C/V.35

GND

POWER

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

VOICE/FAX CHANNEL 1

DSU/TA

FXO FXS

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

POWER

Internal Modem DIAL-UP Connector

MMH2834 Modem Leased Line

RJ-11 Phone Cable

VOICE/FAX CHANNEL 2

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

VOICE/FAX CHANNEL 1

DSU/TA

FXO FXS

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

POWER

Internal Modem LEASED Connector

Digital DSU

RJ-48 Cable

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

VOICE/FAX CHANNEL 1

DSU/TA

FXO FXS

DATA/COMMAND

RS232C/V.35

EXTERNAL COMPOSITE

POWER

GND

Internal DSU/TA DIGITAL Connector

DataT alker Owner’s Manual

3 Data Port - Plug your PC into the Data/Command port and put dip switch 3 up to exit

command mode and enable data mode (located on the side of the Data Talker).

DIAL-UP LEASED DIGITAL

MODEM

INTERNAL COMPOSITE

E&M

VOICE/FAX CHANNEL 1

DSU/TA

RS232C/V.35

EXTERNAL COMPOSITE

DATA/COMMAND

FXO FXS

GND

POWER

DATA/COMMAND Connector

RS232 Cable

Configuration and installation is complete. To connect to the main office turn the Data Talker off and on. It will call the main office every

time it is powered up. To view or change the current configurations, select option 1 from the main menu. Press any key to continue. Storing parameters. Resetting unit. Please wait 10 seconds. Then hit ENTER to display the Main Menu.

Chapter 7 - Troubleshooting

DataT alker Owner’s Manual

7.1 Introduction

The DataTalker is designed to be easy to operate and maintain. The procedures in this chapter will help isolate any problem to a specific network component, at which point you will be instructed to call the appropriate personnel or execute commands to adjust operating conditions. You are not expected to perform any specific repair procedures on the DataT alker besides command execution and switch settings.

7.2 Importance of the Composite Link Statistics Report

The Composite Link Statistics report provides information about the operation of your composite link that can aid you in testing for problems. It can be very valuable when used in conjunction with analog loopback testing, which tests the DataTalker itself, since it can help identify problems when the problem source is on the other end of the data line or in the line itself.

Data in the Composite Link Statistics report give information about line failure conditions. Your Composite Link Statistics report contains the following items:

Composite Link Statistics Elasped Time : 00 Days 00 Hours 00

Comparing Data Blocks Transmitted with Data Blocks Retransmitted (the number of retransmits needed to get the data through) can indicate a line problem. Comparing Data Blocks Received with Receive Block Errors can indicate the same problem from the other end of the link. Numbers that you might encounter could be 10,000 data blocks transmitted (or received) compared to 500 or 1000 retransmits (or receive block errors).

Link Alarms tells you simply that there is some sort of problem on the link. You will find that the Link Alarms numbers will correspond to the Data Blocks Retransmitted and Receive Block Errors numbers. Specifically, a Link Alarm means that it has been 10 seconds since the DataTalker has received an acknowledgment. Normally , three acknowledgments will be received during a 10second period.

The Remote Downs entry means that a DataTalker has sent data 30 times and could not get it through (the link has been broken).

The other entries in the Composite Link Statistics report do not apply to link problems.

7.3 Test Cables

If you are using the DataTalker internal DSU or MMH2834 modem, there are three test cables you can use to check out your system. T wo DataTalker back-to-back test cables allow you to connect your two DataTalkers locally before installing them on either end of a phone line. There is also a composite link loopback cable that you can use with the internal DSU to loop the DataTalker composite link signal back to itself.

To test the internal DSU back-to-back, connect the DSUs in the two units with the RJ-45 back-toback cable, then configure one DSU for internal clocking and the other DSU for external clocking. Set the speed to the same value on both units. To perform the composite link loopback test, configure the DSU for internal clocking and use the composite link loopback cable.

To test the internal MMH2834 modem back-to-back, use the RJ-11 back-to-back cable and configure both modems for 4-wire leased line operation. Configure one modem for originate and the other modem for answer. Set the speed to the same value on both units and set transmit level to -10. To test 2-wire leased line operation, substitute a regular RJ-1 1 cable in place of the back-to-back cable and reconfigure the modem for 2-wire operation.

If you are using an external synchronous modem for the link communications, refer to its documentation for testing procedures.

If you have any problems in performing these procedures, contact Multi-Tech’s Technical Support department for assistance (see Chapter 8).

Chapter 7 - Troubleshooting

Test Cable for Internal DSU or MMH2834 Modem

DataTalker

Note: Used locally before installation to verify operation of entire system except composite link.

Composite Link Loopback Cable with Internal DSU

DataTalker

Test Cable

Internal Composite Connector

Composite Link Loopback Cable

DataTalker

Figure 7-1. Off-Line Test Modes

DataT alker Owner’s Manual

7.4 Troubleshooting Guide

This troubleshooting guide is designed to help you pinpoint the cause of your problem and correct it as quickly as possible. Because equipment from different manufacturers is typically involved in multiplexer networks, you may encounter “finger pointing” as to who is at fault. Who is at fault is not as important as getting you back on line as soon as possible. The intent of this guide is to indicate the most probable causes of specific error conditions, but, since similar conditions may have different causes, please keep in mind that this is a guide, not a cookbook, and you must use your best judgement.

For purposes of troubleshooting, you can divide your mux network into three main parts:

Data Channel

• Sync/async channel device (printer, terminal, PC, etc.)

• Channel communications (RS232 cabling, modems, etc.)

V oice/Fax Channel

• T elephones and fax machines

• Station side of PBX

• E&M trunk of PBX (channel 1 only)

Composite Link

• Digital composite link communications line with internal or external DSU or ISDN terminal adapter

• Internal/external link modem

• Composite link communications line (4-wire non-loaded metallic wire for DSU or 2-wire or 4wire lease line or dial-up line for internal or external modem)

Once you have found the probable cause of your problem, refer to the specific manual chapter for additional help, or contact Multi-Tech Technical Support (see Chapter 8).

Table 7-1. Command Port Troubleshooting

Chapter 7 - Troubleshooting

Problem

Command port device not communication with DataT alker

Possible Causes

Communications software not installed on command port PC

Command port not enabled

Bad cable or cable connection

Solution

1. Install communications software on command port PC (refer to communcations software documentation of installation instructions).

1. Set DIP-Switch #3 to the closed (down) position.

1. Check RS-232 cable connections between command port device and Command port on DataTalker for loose connections or bent pins.

2. Check RS-232 cable connections between command port device and Command port on DataTalker for correct cable wiring (see cabling diagrams in Appendix C).

3. Call Tech Support for assistance (see Chapter 8).

Table 7-2. Composite Link Troubleshooting Internal DSU

Problem

Composite link down with CTS, XMT, and RD LED on

DSU not communication with communication line

Faulty communication line

Possible Causes

Solution

Verify that the DSU LED is on. If off, ensure that DIP-Switch #2 is in the open (up) position.

Verify that a cable is connected to the internal composite DSU/T A Digital connector.

Verify DSU configuration. See Composite Link Settings - Internal DSU in Table 7-5.

Call Tech Support for assistance (see Chapter 8).

Call phone company and verify communication line.

Call Tech Support for assistance (see Chapter 8).

DataT alker Owner’s Manual

Table 7-2. Composite Link Troubleshooting Internal DSU

Problem

Composite link down with CD, CTS, XMT, RD and RCV LEDs on

Flashing RXT LED

Possible Causes

Composite link not configured correctly

High error rate on communication line

DSU clocking configured incorrectly

Solution

1. Verify DSU configuration. See Composite Link settings Inernal DSU in Table 7-5.

2. Call Tech Support for assistance (see Chapter 8).

1. View composite link statistics (refer to Table 7-10).

2. Perform composite link loopback tests (refer to Table 7-12).

3. Call phone company and verify communication line.

4. Call Tech Support for assistance (see Chapter 8).

1. For DDS line, both DSUs should be set for DDS clocking.

2. Call phone company and verify communication line.

3. Call Tech Support for assistance (see Chapter 8).

Internal ISDN Terminal Adapter

Chapter 7 - Troubleshooting

Problem

Composite link down with CTS, XMT and RD LEDs on

Composite link down with CD, CTS, XMT, RCV and RD LEDs on

Possible Causes

Terminal adapter not communicating with ISDN line

Faulty communication line

Composite link not configured correctly

Solution

1. Verify that the the TA LED is

on. If off, ensure that DIPSwitch #2 is set to OPEN (Up).

2. Verify that a cable is

connected to the internal composite DSU/T A Digital connector.

3. Verify ISDN configuration. See

Composite Link Settings Internal ISDN in Tabe 7-6.

4. Call Tech Support for

assistance (see Chapter 8).

1. Call phone company and

verify communication line.

2. Call Tech Support for

assistance (see Chapter 8).

1. Verify ISDN configuration, See

Composite Link Settings Internal ISDN in Table 7-6.

Flashing RXT LED

High error rate on communication line

ISDN clocking configured incorrectly

2. Call Tech Support for

assistance (see Chapter 8).

1. View composite link statistics

(refer to Table 7-9).

2. Perform composite link

loopback tests (see Diagnostic T esting in Table 7-

12).

3. Call phone company and

verify communication line.

4. Call Tech Support for

assistance (see Chapter 8).

1. For ISDN line, both terminal

adapters should be set for normal clock source.

2. Call Phone company and

verify communication line.

3. Call Tech Support for

assistance (see Chapter 8).

DataT alker Owner’s Manual

Internal MMH2834 Modem

Problem

Composite link down with CTS, XMT, and RD LEDs on

Possible Causes

MMH2834 modem not communicating with communications line

Faulty communications line

Solution

1. Verify MDM LED is on. If off, ensure that DIP-Switch #2 is in the OPEN (Up) position.

2. Verify that cables are connected to internal composite Modem Dial-up or Leased connector.

3. Verify modem configuration (see Composite Link Settings

- Internal MMH2834 in Table 7-7).

4. Perform Local Analog Loopback test (see Appendix G, “Testing your MMH2834”).

5. Call Tech Support for assistance (see Chapter 8).

1. Call phone company and verify communication line.

2. Call Tech Support for assistance (see Chapter 8).

Composite link down with CD, CTS, XMT, RCV and RD LEDs on

Flashing RXT LED

Composite link not configured correctly

High error rate on communication line

1. Verify modem configuration (see Composite Link Settings

- Internal MMH2834 in Table 7-7).

2. Call Tech Support for assistance (see Chapter 8).

1. View composite link statistics (refer to Table 7-9).

2. Perform Local Analog Loopback test (see Appendix G, “Testing your MMH2834”).

3. Call phone company and verify communication line

4. Call Tech Support for assistance (see Chapter 8).

External Composite Link Device

Chapter 7 - Troubleshooting

Problem

Composite link down with CTS, XMT and RD LEDs on

Composite link down with CD, CTS, XMT, RCV and RD LEDs on

Flashing RXT LED

Possible Causes

Composite link not communicating with communications line

Faulty communications line

Composite link not configured correctly

High error rate on communication line

Solutions

1. Verify EXT LED is on. If off,

ensure that DIP-Switch #2 is in the Closed (down) position.

2. Verify that calbe is connected

to External Composite RS232C/V .35 connector .

3. Verify composite link

configuration (see Composite Link Settings - External Device in Table 7-8).

1. Call phone company and

verify communication line.

2. Call Tech Support for

assistance (see Chapter 8).

1. Vereify composite link

configuration (see Composite Link Settings - External Device in Table7-8).

1. View composite link statistics

(refer to Table 7-9)

Composite link down with CD, CTS and RD LEDs on

External device settings

2. Perform composite link

loopback tests (see Diagnostic T esting in Table 7-

12).

3. Call phone company and

verify communication line.

4. Call Tech Support for

assistance (see Chapter 8).

1. Verify that external device is

set for sync, full duplex, and internal clocking.

DataT alker Owner’s Manual

Table 7-3 Data Channel Troubleshooting

Problem

Async Data Channel

Channel Device not communicating with DataT alker; composite link up with CD,, CTS, XMT, RCV and RD LEDs on

Async Data Channel device losing data

Sync Data Channel

Channel Device not communicating with DataT alker; composite link up with CD,, CTS, XMT, RCV and RD LEDs on

Possible Causes

Incorrect channel parameter settings

Channel device incorrectly cabled

Flow control not properly set

Incorrect channel parameter settings

Solution

1. Verify configuration of data port (see Data Port Configuration in Table 7-10).

2. Call Tech Support for assistance (see Chapter 8).

1. See cabling diagrams in Appendix B and C on both DataTalker and data channel device.

2. Call Tech Support for assistance (see Chapter 8).

1. Verify flow control options for the async data channel device (see T able 7-10).

1. Verify configuration of data port (see Data Port Configuration in Table 7-10).

2. Call Tech Support for assistance (see Chapter 8).

Channel device incorrectly cabled

Incorrect Data T ype

Incorrect Clocking

1. See cabling diagrams in Appendix B and C on both DataTalker and data channel device.

2. Call Tech Support for assistance (see Chapter 8).

1. Verify that sync device uses HDLC or SLDC protocol, NRZ encoding, and operates in full duplex.

1. If sync device expects clock to come from DataTalker on pins 15 and 17, set DataTalker sync data channel to internal clocking and set speed.

2. If sync device provides click to DataTalker on pin 24, confiugre sync data channel for external clocking.

Table 7-4. Voice/Fax Troubleshooting

Chapter 7 - Troubleshooting

Problem

V olume levels not sufficient on local voice/fax channel

Local telephone goes off-hook and remote telephone does not ring (FXS to FXS configuration)

Possible Causes

Input level gain setting too low on remote voice/fax channel

Output level attentuation setting too high on local voice/fax channel

Device not connected to correct voice/fax connector

Voice/fax channel configuration problem

Solution

1. Increase input level gain

setting on remote voice/fax channel a couple db and recheck voice quality (see Table 7-11).

1. Decrease output level

attentuation setting on local voice/fax channel a couple of db and recheck voice quality (see T able 7-1 1).

1. Verify that devices are

attached to voice/fax channel FXS RJ-1 1 connector.

1. Verify that local and remote

interface types are configured correctly (see Table 7-1 1).

2. Obsereve that the XSG LED

on the local voice/fax channel lights when the telephone goes off-hook and that the RSG LED on the remote FXSconfigured voice/fax channel flashes with each ring.

Data throughput slows excessively when voice/fax channel is active

FXO to FXO configuration local telephone does not ring

Parts of words are not being heard

Too much bandwidth being used up for voice/fax

Device not connected to correct voice/fax connector

Voice/fax channel configuration problem

Part of analog signal being clipped off

1. Decrease voice/fax channel

digitizing rate to 9600 bos (see T able 7-1 1).

2. Enable or, if active, increase

silence suppression on voice/ fax channel (see Table 7-1 1)

1. Verify that the device is

attached to the correct voice/ fax channel RJ-1 1 connector.

1. Verify that local voice/fax

interface type is configured for FXS and remote interface type is set for FXO operation (see T able 7-1 1).

1. Lower the input level gain and

the output level attentuation a couple of db and recheck voice quality (see Table 7-1 1).

DataT alker Owner’s Manual

Table 7-4. Voice/Fax Troubleshooting (continued)

Problem

V oice conversation or fax traffic becomes erratic after changing the remote interface type

No communication on voice/fax channel

Possible Causes

Remote connection is different from remote interface type

Composite link down

Phone cord for the voice or fax machine is connected to the wrong interface connector

Solution

1. Contact the remote site to verify its local interface type and ensure that remote interface type at local site is the same (see Table 7-1 1).

1. Call phone company and verify communication line.

1. Verify that the phone cord for the voice or fax machine is connected to the correct interface connector.

Chapter 7 - Troubleshooting

7.5 Composite Link Settings - Internal DSU

Table 7-5. Composite Link Settings - Internal DSU

Step Procedure

1 Toggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DATA/COMMAND

connector on the back panel of the DataTalker.

Note: Any cables connected to the computer should be shielded to reduce interference. 3 Apply power to the DataTalker. 4 Apply power to the terminal or PC. Run the PC’s communications software in terminal mode

and press ENTER twice to establish communications with the DataTalker. The Main Menu

appears:

Main Menu 1 - Configurations

2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SETUP

Selection : _

5 Enter 1 and press ENTER. The Configurations menu is displayed:

Configurations 1 - Data Port Configuration

Selection : _

6 Enter 3 and press ENTER to display the Composite Link Settings - Internal DSU menu. 7 Verify the internal DSU settings. T o change settings, enter the appropriate option numbers.

The default settings are correct for a 56K bps DDS line.

Composite Link Settings - Internal DSU

1 - Speed: 56k 2 - Clocking: DDS S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

8 When all options for the DSU are set, enter S and press ENTER to store all configurations.

Then enter M and press ENTER to return to the Main Menu. 9 Disconnect the terminal or PC from the command port and place DIP switch position 3 in the

up (OPEN) position to change the command/data port to a data channel.

DataT alker Owner’s Manual

7.6 Composite Link Settings - Internal ISDN Terminal Adapter

Table 7-6. Composite Link Settings - Internal ISDN Terminal Adapter

Step Procedure

1 Toggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DATA/COMMAND

connector on the back panel of the DataTalker.

and press ENTER twice to establish communications with the DataTalker. The Main Menu

appears:

Main Menu 1 - Configurations

2 - Statistics 3 - Reset Options 4 - Diagnostics 5 - Exit Command Mode 6 - QUICK SETUP

Selection : _

5 Enter 1 and press ENTER. The Configurations menu is displayed:

Configurations 1 - Data Port Configuration

Selection : _

6 Enter 3 and press ENTER to display the Composite Link Settings - Internal TA menu. 7 Select option 2, Configure TA, from the menu to verify the terminal adapter settings. After you

select the option, wait five seconds, then enter AT!V to access the terminal adapter’s

configuration menu. To change a setting, enter the menu choice number and press ENTER.

For further information refer to the ISDN T erminal Adapter Owner’s Manual.

Composite Link Settings - Internal TA 1 - On-Line XMT Rate: 128000

2 - Configure TA 3 - DOD/DOI: Off S - Store All Configurations M - Main Menu P - Previous Menu

Selection : _

100

8 When you are done configuring the terminal adapter , enter CTRL+X to exit the terminal

adapter’s configuration menu; then press ENTER, Q to return to the DataTalker’ s Composite

Link Settings - Internal TA menu, and press M, ENTER to return to the Main menu. 9 Disconnect the terminal or PC from the command port and place DIP switch position 3 in the

up (OPEN) position to change the command/data port to a data channel.

Multi-Tech Systems DT102, DT101-xx, DT102-xx, DT101 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1 - Introduction and Description

1.1 Introduction

1.2 About This Manual

1.3 Product Description

1.4 System Features

1.4.1 Voice/Fax

1.4.2 Data Channel

1.4.3 Composite Link

1.4.4 Flow Control

1.4.5 Parameter Memory

1.4.6 Diagnostics

1.4.7 Operational Statistics

1.5 FCC Regulations for Telephone Line Interconnection

1.6 Canadian Limitations Notice

1.7 Specifications

1.7.1 Async Data Channel

1.7.2 Sync Data Channel

1.7.3 System Control (Command Port)

1.7.4 Composite Link

1.7.5 Internal Modem

1.7.6 Internal DSU

1.7.7 ISDN Terminal Adapter

1.7.8 Voice/Fax Channel

1.7.9 Electrical/Physical

Chapter 2 - Configuration

2.1 Introduction

2.2 Configuration 1 - Dial-Up Link

2.3 Configuration 2 - MMH900 Series with Voice/Fax

2.4 Configuration 3 - LAN to LAN

2.5 Configuration 4 - PBX to PBX

Chapter 3 - Front and Rear Panel Descriptions

3.1 Introduction

3.2 Indicators

3.3 Connectors

3.3.1 Frame Ground Connector (GND)

3.3.2 POWER Connector

3.3.3 DATA/COMMAND Connector

3.3.4 EXTERNAL COMPOSITE RS232C/V.35 Connector

3.3.5 VOICE/FAX CHANNEL 1 FXS Connector

3.3.6 VOICE/FAX CHANNEL 1 FXO Connector

3.3.7 VOICE/FAX CHANNEL 1 E&M Connector

3.3.8 DSU/TA DIGITAL Connector

3.3.9 MODEM LEASED Connector

3.3.10 MODEM DIAL-UP Connector

3.4 Switches and Shunts

3.4.1 Front Panel Switches

3.4.2 Power Switch

3.4.3 DIP Switch

3.4.4 RS232C/V.35 Shunt

Chapter 4 - Unpacking and Configuration

4.1 Introduction

4.2 Unpacking

4.3 Configuration Summary

4.4 Data Port Configuration Considerations

4.5 Voice/Fax Channel Configuration Considerations

4.6 Composite Link Configuration Considerations

4.7 Configuration Procedure

Chapter 5 - Installation

5.1 Introduction

5.2 Cabling

5.3 V.35 Shunt

5.4 Power-On and Checkout

Chapter 6 - Menus

6.1 Introduction

6.2 Configurations Menu

6.2.1 Data Port Configuration

6.2.2 Sync Data Port Configuration

6.2.3 Voice/Fax Channel Configuration

6.2.4 Composite Link Configuration

6.3 Statistics

6.4 Reset Options

6.5 Diagnostic Tests

6.5.1 Loop Tests

6.6 Configure Remote Unit

6.6.1 MMV8/16/32 Configuration Options

6.6.2 Quick Setup