Telenetics RM16M - Versatile Rack Mounting Chassis, RM16M DCV-R, RM16M ACV-R Installation And Operation Manual

RM16M DCV -R/ RM16M ACV -R

Installation and Operation Guide

TEL-6200508506004 Rev. A

The products and programs described in this Installation and
Operation Guide are licensed products of Telenetics Corporation. This
Installation and Operation Guide contains proprietary information
protected by copyright, and this Installation and Operation Guide and
all accompanying hardware and documentation are copyrighted.

Telenetics Corporation does not warrant that the hardware will work
properly in all environments and applications, and makes no warranty
and representation, either implied or expressed, with respect to the
quality, performance, merchantability, or fitness for a particular
purpose.

Information in this Installation and Operation Guide is subject to
change without notice and does not represent a commitment on the
part of Telenetics Corporation. Telenetics Corporation assumes no
responsibility for any inaccuracies that may be contained in this
Installation and Operation Guide.

Telenetics Corporation makes no commitment to update or keep
current the information in this Installation and Operation Guide, and
reserves the right to make changes to this Installation and Operation
Guide and/or product without notice.

No part of this manual may be reproduced or transmitted in any form
or by any means, electronic or mechanical, including photocopying,
recording, or information storage and retrieval systems, for any
purpose other than the purchaser's personal use, without the express
written permission of Telenetics Corporation.

 Copyright 2002 Telenetics Corporation.

Page iii

FCC Requirements

This equipment complies with FCC Rules, Part 68. Located on the
equipment is the FCC Registration Number and Ringer Equivalence
Number (REN). You must provide this information to the telephone
company if requested.

The Registration number and REN will be inscribed on the printed
circuit board on insert cards or on a label attached to either the chassis
bottom or metal end plate on standalone or rack models. In any case,
the FCC requires these numbers to be prominently displayed on an
outside surface of the equipment.

The REN is used to determine the number of devices you may legally
connect to your telephone line. In most areas, the sum of the REN of
all devices connected to one line must not exceed five (5.0). You
should contact your telephone company to determine the maximum
REN for your calling area.

The telephone company may change technical operations or
procedures affecting your equipment. You will be notified of changes
in advance to give you ample time to maintain uninterrupted telephone
service.

contact: ARC Electronics 800-926-0226

The telephone company may ask that you disconnect this equipment
from the network until the problem has been resolved. If your
equipment continues to disrupt the network, the telephone company
may temporarily disconnect service. If this occurs, you will be
informed of your right to file a complaint with the FCC.

This equipment may not be used on coin services provided by the
telephone company. Connection to party lines is subject to state
tariffs.

WARNING: This equipment uses, generates, and can radiate radio-

Page iv

frequency energy, interfering with radio communications, if not
installed and used according to the instruction manual. It has been
tested and complies with the limits for a Class A computer device,
according to FCC Rules, Part 15. Operation of this equipment in a
residential area may cause interference. If it does, you must correct the
cause of the interference.

Changes or modifications to this unit are not expressly approved by
the party responsible for compliance could void the user’s authority to
operate the equipment.

Page v

Contents

CHAPTER 1 INTRODUCTION................................................................7

OVERVIEW..................................................................................................7

BACK PANEL INTERFACE CONNECTORS..................................................9

LOCALVIEW DC SHELF MODEL..............................................................11

CONTACT INFORMATION.........................................................................12

CHAPTER 2 INSTALLATION..............................................................13

UNPACKING AND INSPECTING THE EQUIPMENT.....................................13

SITE PREPARATION..................................................................................13

INSTALLATION PROCEDURES ..................................................................15

Required Tools and Equipment....................................................15

Mechanical Assembly.....................................................................15

ELECTRICAL INSTALLATION ...................................................................16

AC Power (RM16M ACV-R Data Shelf)......................................16

DC Power (RM16M DCV-R Data Shelf) .....................................16

Digital EIA-232 Interface...............................................................18

TELEPHONE LINE INTERFACES................................................................19

Modular Jack Connectors.............................................................19

Optional Backplanes for Dial Backup Connections................19

INSTALLING AND REMOVING POWER MODULES....................................20

AC Power Module...........................................................................20

DC Power Module...........................................................................22

Installing Power Modules..............................................................22

Removing Power Modules.............................................................23

INSTALLING AND REMOVING PC CARDS ................................................23

Removing PC Cards........................................................................24

DIGITAL INTERFACE BACKPLANE INSTALLATION.................................25

CHAPTER 3 OPERATION.....................................................................29

TEST MODES ...........................................................................................29

FRONT PANEL INDICATORS.....................................................................29

SPECIAL ASSEMBLIES .............................................................................31

Contents

Page vi

CHAPTER 4 MAINTENANCE................................................................33

PC CARDS ................................................................................................33

POWER MODULE .....................................................................................33

APPENDIX A SPECIFICATIONS .........................................................35

APPENDIX B 24 VOLT INPUT DATA SHELF...................................37

24 VOLT SHELF SPECIFICATIONS ........................................................... 37

APPENDIX C DIGITAL INTERFACE DESCRIPTIONS ...................39

APPENDIX D TELEPHONE LINE CABLES ........................................43

TECHNICAL SUPPORT..............................................................................48

RETURN MERCHANDISE AUTHORIZATION (RMA) PROCEDURE ......... 48

Page 7

Chapter 1

Introduction

he Telenetics RM16M Universal Data Shelf™ is a heavy-gauge
steel-plated modem rack chassis. It measures 7 inches high and

10.75 inches deep, and mounts in a standard 19- or 23-inch rack.
The Data Shelf comes in two versions: AC (RM16M ACV-R) and DC
(RM16M DCV-R). This Guide covers both versions.

Overview

The Telenetics RM16M Universal Data Shelf has slots that accept 16:

v Modems
v Multiplexers
v Digital Data Service (DDS) units
v Dial backup units
v Automatic calling units

All of these devices are plug-in printed circuit (PC) cards that slide
into the front of the Data Shelf. The cards can be mixed in any way
within the Data Shelf. Each card has been independently tested and
meets Part 68, FCC rules and regulations.

Power, Data Terminal Equipment (DTE), and communication-line
connections are made at the back panel of the Data Shelf (see “Back
Panel Interface Connectors” on page 9). This allows PC cards to be
installed or replaced, without disturbing the cable connections at the
back

The AC version of the Data Shelf accepts a single power module that
occupies two slots, while the DC version accepts two power modules
that occupy one slot each. The power modules power all the PC cards

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in the Data Shelf, converting user-supplied 48 volt DC input to + 15
Vdc, −15 Vdc, and +8.5 Vdc outputs for distribution to the PC cards.
Regulators on the PC cards convert the plus and minus 15 Vdc to plus
and minus 12 Vdc and + 8.5 Vdc to +5 Vdc.

NOTE: If two power modules are installed in the DC version of the
Data Shelf, one powers the Data Shelf while the other acts as a
redundant power source.

Figure 1-1 shows an example of the location and orientation of the
modem cards and power module. For convenience, the front panel of
the Data Shelf is hinged to allow easy access to the modem cards and
power module(s) without disturbing the DTE and communication-line
connections at the back of the Data Shelf.

Figure 1-1. Data Shelf Example

Page 9

Back Panel Interface Connectors

All DTE, Telco and power connections are made at the back panel of
the Data Shelf.

The DTE connectors can be:

v Individual 25-pin connectors  one for each PC card (standard)
v Two 50-pin mass termination connectors (optional)
v Wire-wrap pins (optional)

The Telco connectors can be:

v Individual 8-pin modular jacks  one for each PC card (standard)
v Two 50-pin termination connectors (optional)
v Wire-wrap pins (optional)

The telephone-line connectors are identified by the telephone
company Universal Service Ordering Code (USOC) and must be
specified when ordering standard jack arrangements from Telenetics.

The various jack arrangements ensure that the signal level received at
the telephone company central office does not exceed – 12 dBm. The
Data Shelf has been registered with the FCC per the requirements of
Part 68 of the FCC rules for:

1. Programmable Mode  the local telephone company will install a

resistor internal to the jack (USOC RJ455 or RJ41S).

2. Permissive Mode  the individual modem cards are

preprogrammed for a maximum transmit level of –9 dBm (USOC
RJ11C or RJ16X).

Figures 1-3 through 1-5 show examples of Data Shelf back panels.

NOTE: For more information about the power connections, refer
to “Electrical Installation” on page 16.

Installation

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Figure 1-3. Examples of Back Panels with 25-pin DTE Connectors

and 8-pin Modular Telco Jacks

Figure 1-4. Example of Back Panel with 25-pin EIA DTE Connectors

and Mass Termination Telco Connectors

Page 11

Figure 1-5. Example of Back Panel with Mass Termination

Connectors for DTE and Telco Connections

LocalView DC Shelf Model

The LocalView DC shelf is a special model of the DC version of the
Data Shelf that provides modem system network management.

Figure 1-6 shows the back panel of the LocalView Data Shelf.
LocalView allows devices in a Shelf to be controlled or interrogated
through shared input/output devices.

The system includes a controller that resides in slot 16 of the Shelf and
a modified backplane that uses unused pins on the power connector
to pass data, address, and control information between the controller
and device cards.

LocalView allows a single controller to address up to five shelves.
With these shelves fully populated, a total of 79 device cards can be
addressed either from the LCD on the front of the controller or through
an RS232 port on the rear of the controller. For information, refer to the
LocalView controller card manual.

Installation

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Figure 1-6. Back Panel of LocalView Data Shelf (DC Version only)

Contact Information

For more information about Telenetics Universal Data Shelves, or
other Telenetics solutions, contact us using any of the following
methods.

Voice Calls

We welcome your calls at [phone] Monday
through Friday, from 8:00 am to 5:00 pm Pacific Time.

Fax Number

You can also send your requests for information to our
24-hour fax number: [phone].

E-mail

If you prefer, you can send information requests to our
24-hour e-mail address: [e-mail].

Page 13

Website

Our website contains valuable information about our
products. We encourage you to visit us online at
www.telenetics.com.

Chapter 2

Installation

his chapter describes how to install the Data Shelf.

Unpacking and Inspecting the

Equipment

Unpack the equipment and compare the contents to the packing list.
Inspect the equipment for any damage that may have occurred in
shipment. If you see any damage or if items are missing, contact
Telenetics. Keep the shipping container and packing material for
future shipment.

Site Preparation

When selecting a location to install the Data Shelf, choose a site that:
v Is clean, well lit, and free from extremes of temperature, humidity,

appreciable shock, and vibration.

v Is within seven feet of a power source that can furnish 48 ±4 Vdc

at 3.5 amps.

v Is within 50 feet of the associated data terminal.
v Provides at least 36 inches of clearance at the front for operating

and maintenance accessibility.

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v Provides at least 4 inches at the back of the enclosure for interface

cable clearance and unobstructed airflow.

Side and top clearances for rack-mounted equipment are dictated by
the rack-cabinet provisions, but should allow a free flow of cooling air
(Figure 2-1).

Figure 2-1. Data Shelf Cabinet

Page 15

Installation Procedures

Service personnel should be familiar with the complete installation
procedure before installing the shelf.

Required Tools and Equipment

Special tools or test equipment are not required for installation.

CAUTION: To prevent damage to enclosure components from
overheating, ensure clearances of 1 ¾-inch top and bottom
between mounted enclosures. Make adequate provision for cool
air circulation and exhaust of warm air, such as air intake louvers
in the bottom panel of the Data Shelf cabinet and an adequate
CFM exhaust fan in the top panel of the Data Shelf cabinet.

Mechanical Assembly

The Data Shelf mounts into a standard 19-inch cabinet and requires 7
inches of vertical panel space (see Figure 2-2).

The 19-inch Data Shelf also fits into a 23-inch cabinet. This installation
requires the rack-mounting brackets to be removed and reinstalled in
the reversed position, so the wider tabs are used for mounting to the
cabinet (see Figure 2-3).

Figure 2-2. Mounting Dimensions

Figure 2-3. Mounting Dimensions for a 23-inch Rack

Installation

Page 16

Electrical Installation

All power connections are made at the back panel of the Data Shelf.

AC Power (RM16M ACV-R Data Shelf)

Power for the AC version of the Data Shelf (RM16M ACV-R) is
supplied to the power modules through a separate AC power cord.
The power cord is fastened to the back panel with a cable clamp to
prevent it from becoming unattached.

After the power module is installed and fastened to the rear panel,
insert the power cord into the power module socket on the back of the
Data Shelf.

To apply power to the module plug the opposite end of the power
cord into a standard 115VAC grounded wall socket.

DC Power (RM16M DCV-R Data Shelf)

Power for the DC version of the Power Shelf (RM16M DCV-R) is
provided by an incoming power source that connects to TS1, TS2, or
both on the back of the Data Panel (see Figure 2-4). Facing the front of
the Data Shelf, TS1 supplies the power module on the left and TS2
supplies power to the power module on the right.

One power module is sufficient to power all 16 slots. If one power
source is available, it can connect to either terminal strip (TS1 or TS2)
on the back of the Data Shelf, with shunt bars installed to connect
power to the opposite strip (see Figure 2-5). The bars should always
be installed if only one power source is used and must be removed if
two power sources are used.

TS1 and TS2 alarms and chassis ground are connected internally. An
alarm condition exists on the alarm circuit when any operating or
supply voltage is lost on either power supply. By observing which
front panel power LED is out, you can identify the faulty power
supply.

Page 17

Figure 2-4. Power Terminals

Figure 2-5. Example of a Single Power Source Installation

Installation

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Digital EIA-232 Interface

The 16 EIA-232C or D digital input connectors are labeled and shown
in Figure 2-2. These connectors are either Cannon or Cinch 25-pin D
series, as defined in EIA-232. For a description of the active pin
connectors, refer to Appendix D on page 39.

Table 2-1 shows the EIA-232 levels from the modem.

NOTE: Some modems may not use all the functions listed in
Tables 2-1 and 2-2.

Table 2-1. Modem EIA Levels

Received data mark: –5 to –15 V
Received data space: +5 to +15V
Control signal OFF level: –5 to –15V
Control signal ON level: +5 to +15V

Table 2-2 shows the expected levels on all inputs.

Table 2-2. Expected Levels on All Inputs

Mark: –3 to –25 V
Space: +3 to +25V
Controls OFF: –3 to –25V
Controls ON: +3 to +25V

Page 19

Telephone Line Interfaces

The Data Shelf is FCC certified for connection to the dial-up Public
Switched Telephone Network (PSTN). The following sections describe
the standard and optional ways for connecting to the communications
line.

Modular Jack Connectors

The standard Data Shelf back panel has 16 8-pin modular jacks, one for
each modem. These jacks provide the interface for connecting
individual modems to the telephone line. Each 8-pin jack has contacts
that are used in various combinations depending on the type of
service installed. Leased-line modems, by comparison, have four
contacts: a transmit pair and a receive pair.

For a description of the modular jack functions, refer to Table E-1 in
Appendix E on page 43.

Optional Backplanes for Dial Backup Connections

Two optional Data Shelf backplanes are available for use with dial
backup modems. These backplanes provide either modular or mass
termination jacks for both dial-up and leased line telephone line
connections. Figure 1-4 on page 10 and Figure 1-5 on page 11 show
examples of these backplanes.

Modems with dial backup capability can switch to a dial-up line if the
leased line fails. For this reason both the TELSET/LL and TELCO
connections must be made. If the option is not used, connect the
modem to the appropriate service, either leased line or dial-up. If
standard modems (no dial backup capability) are installed they are
limited to connection to the TELCO only.

For a description of the modular jack functions, refer to Table E-1 in
Appendix E on page 43.

NOTE: Telco jack pin functions are identical for both standard
and dial backup modems. Similarly, DTE connectors are the

Installation

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same as for standard modems.

Installing and Removing Power Modules

Power modules generate power that is bused to the 16 modem edge
connectors on the recessed power bus. Power modules are available in
AC and DC versions.

AC Power Module

The AC power module is a 2-slot module designed for the RM16M
ACV-R Data Shelf. The RM16M ACV-R Data Shelf can hold a
maximum of one AC power module.

The AC power module consists of:
v Two transformers (one for slots 1 through 8 and the other for

slots 9 through 16)

v Two push-button circuit breaker switches on the front panel
v A red 3.5 Amp light on the front panel
v A 115 or 230 VAC connector on the back of the module

Table 2-3 lists the connector pin functions on the AC power module.

Table 2-3. Power Connector Pin Functions

Pin Contact Function

1 and A
2 and B

Plus and minus 12 Volt
Winding

3 and C 12 Volt Common
4 and D
5 and E

5 Volt Winding

6 and F Chassis Ground

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Installation

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DC Power Module

The DC power module is a single-slot module designed for the
RM16M DCV-R Data Shelf. The RM16M DCV-R Data Shelf can hold
up to two power modules. When two power supply modules are used,
any loss of supply or operating voltage to one module causes the
other module to carry the entire load. If this happens, the common
alarm contacts close to reflect the alarm condition.

The DC power module consists of:

v A DC-to-DC switching regulator
v A green Power light on the front panel
v An interface connector on the back of the module

Installing Power Modules

The following procedures describe how to install power modules. This
procedure should only be performed by personnel familiar with this
procedure.

1. Lower the Data Shelf’s hinged front panel.

2. Locate the power module slots between slots 8 and 9.

3. Grasp power module handle with one hand while supporting the

bottom of the module with your other hand.

4. Align the module in the Data Shelf guide grooves.

5. Gently slide the module into the Data Shelf until it rests against

the edge connector.

6. Firmly push the module in to seat the edge connector.

7. To install a second DC power module, repeat steps 2 through 5,

selecting the adjacent power module slot in step 2.

8. Close the front panel.

9. Tighten the holding screw on rear of housing.

10. When you finish, connect a power source to the module.

v AC modules: connect a power cord to AC plug on rear of power

Page 23

module. Then plug power cord into a 115 or 230 VAC outlet, as
required.

v DC modules: attach a DC power source as described under “DC

Power” on page 16

11. Raise the hinged front panel.

Removing Power Modules

To remove power modules:

1. Remove the power source from the back of the Data Shelf.

2. If there is a holding screw on rear of the housing, loosen the

screw.

3. Lower the hinged front panel.

4. Grasp power module handle and gently slide it out through the

front of the Data Shelf.

Installing and Removing PC Cards

PC cards have edge connectors that insert into receptacles located on
the backplane and power bus. When installing the PC cards, equalize
the loads on the power module. For example, if the shelf has nine
cards, five should be loaded in one half of the Data Shelf (slots 1
through 8) and four should be loaded into the other half of the Data
Shelf (slots 9 through 16).

Caution: Consult the printed circuit card manual to determine if
hardware options need to be changed or verified before inserting
the card.

The following procedures describe how to install PC cards. PC cards
can be installed while the Data Shelf is powered on. This procedure
should only be performed by personnel familiar with this procedure.

1. Lower the Data Shelf’s hinged front panel.

2. Orient the card so the component side is facing to the left.

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3. Align the module in the Data Shelf guide grooves.

4. Gently slide the module into the Data Shelf until it rests against

the edge connector.

5. Firmly push the card in to seat the edge connector.

6. To install additional PC cards, repeat steps 2 through 5.

7. When you finish, close the hinged front panel.

Removing PC Cards

PC cards can be removed while the Data Shelf is powered on. To
remove PC cards:

1. Lower the Data Shelf’s hinged front panel.

2. Pull the card pullers on the PC module to slide the PC card out

through the front of the Data Shelf (see Figure 2-5).

3. To remove additional PC cards, repeat step 2.

4. When you finish removing PC cards, raise the hinged front panel.

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Figure 2-5. PC Card Module

Digital Interface Backplane Installation

When the digital interface backplane is required, use the following
installation procedure:

v Determine which of the two EIA-232 connectors requires the

special backplane. Each backplane converts two EIA-232
connectors to one 50-position connector or 50-wire wrap pins.

v Plug the two 25-pin male connectors into the two 25-pin

receptacles.

v Insert the four screws (for J1 and J3 on the special backplane) and

tighten.

Figure 2-6. Digital Interface for the Optional Backplane

Installation

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Table 2-4. Digital Interface Pin Functions, Special Backplane

J2 J1 J3 Wire Wrap

1 1 P1 1

26 2 2

2 3 3

27 4 4

3 5 5

28 6 6

4 7 7

29 8 8

5 9 9

30 10 10

6 11 11

31 12 12

7 13 13

32 14 14

8 15 15

33 16 16

9 17 17
34 18 18
10 19 19
35 20 20
11 21 21
36 22 22
12 23 23
37 24 24
13 25 25
38 1 P2 1
14 2 2
39 3 3
15 4 4
40 5 5
16 6 6
41 7 7
17 8 8
42 9 9
18 10 10
43 11 11
19 12 12
44 13 13
20 14 14
25 15 15
21 16 16
46 17 17
22 18 18
47 19 19
23 20 20
48 21 21
24 22 22
49 23 23
25 24 24

Page 27

J2 J1 J3 Wire Wrap

50 25 25

Installation

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NOTES

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Chapter 3

Operation

he Data Shelf accepts leased line, PSTN, and DDS-type
modems. Leased-line modems operate on conditioned or

unconditioned leased lines. PSTN-type modems operate on the
dial-up network and have features that allow establishment of dial-up
circuits and data transfer. Some modems can operate on either leased
lines or PSTN.

Modems designed for use in the Data Shelf have a standardized
interface (EIA-232C or D) that provides for orderly calling, answering,
and data modes. Many of the modems also have automatic dialing and
answering capabilities.

Test Modes

Each plug-in modem card has a switch or switches that provide for
modem testing. Test features are described in the manual for the
modem.

Front Panel Indicators

Each PC card has Light Emitting Diode (LED)indicators that can be
viewed through the transparent front panel. With the front panel
lowered, the modem controls can be accessed.

Most modems have LEDs mounted on the front edge of the card to
indicate the status of various EIA-232 interface functions. The LEDs
are described in the manual for the modem.

Some PC cards have a Liquid Crystal Display (LCD) for observing
modem status or selecting options using pushbuttons on the modem

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Operation

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front panel. The LCD functions are explained in the manual for the
modem.

Page 31

Special Assemblies

The Data Shelf can be configured with assemblies that enhance or
modify the operation of the basic modems. The operation of the
special assemblies is explained in the manual for the associated
equipment.

Some special assemblies are:
v 801 Automatic Call Unit (ACU)

Used with PSTN-type modems to establish automatic data calls
on a dial-up network. To use an ACU, the Data Shelf must be
equipped with a segmented back panel.

v 720 Dual Dial Backup Unit (DDBU)

Used to establish dial backup for leased-line modems. To use a
DDBU, a segmented backplane is required.

Page 33

Chapter 4

Maintenance

His appendix provides maintenance information for PC cards and
power modules.

PC Cards

If a PC card becomes inoperative, replace it. Field repair is not
recommended. Contact Telenetics for instructions on repairs and
replacement (see “Contact Information” on page 12).

When swapping out PC cards, you do not have to turn off system
power. This allows PC cards to be changed while allowing all other PC
cards to continue operation.

For more information about installing and removing PC cards, refer to
“Installing and Removing PC Cards” on page 23.

Power Module

The AC power module has two 115 VAC circuit breakers located on
the module front panel. The left-hand breaker protects modem slots 1
through 8. The right-hand breaker protects modem slots 9 through 16.

The DC power module???
For more information about installing and removing power modules,

refer to “Installing and Removing Power Modules” on page 20.

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Maintenance

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NOTES

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Appendix A

Specifications

EIA Standard: Compliant with EIA Standard EIA-310-C
Width: 19 inches (48.3 cm)
Depth: 10.75 inches (27.3 cm)
Height: 7 inches (17.8 cm)
Weight: 20 lbs (9.1 Kg) shipped 50 lbs (22.7 Kg)

loaded

Input voltage 115 VAC +/- 10%,

50/60 Hz

Output voltage 30 +/- 10% VAC, 10

+/- 10% VAC, 50/60
Hz

AC Power
(RM16M ACV-R):

Wattage 150 watts per rack

DC Power
(RM16M DCV-R):

????

Heat Load 510 BTU/Hr (fully loaded rack).
Environmental

Conditions

Temperature (+32ºF to 122ºF) (0º to + 50º)

Specifications

Page 36

NOTES

Page 37

Appendix B

24 Volt Input Data Shelf

The RM 16M DCV-R Data Shelf is also available as a 24-volt input
Data Shelf. In operation and function, this Data Shelf is identical to its
48-volt counterpart. The terminal strips are shown in Figure B-1.

Figure B-1. 24-Volt Power Terminal Strips

24 Volt Shelf Specifications

Input power: 24 Vdc ± 4 V
Input current: 7 amps

24 Volt Input Shelf

Page 38

NOTES

Page 39

Appendix C

Digital Interface

Descriptions

This appendix lists the digital interface descriptions. The information
in this appendix may vary, depending on modem type. Consult the
manual for the particular PC card you are using.

Table C-1. Digital Interface Signal Descriptions (232-C)

Pin
No.

EIA-

232C

CCITT Signal Name Description

1 AA 101 Protective

Ground or Earth
Ground

Chassis ground. Isolated from signal ground
or common return (pin 7).

2 BA 103 Transmit Data Serial digital data (to be modulated) from a

data terminal or other digital data source.

3 BB 104 Received Data Serial digital data at the output of the modem

receiver. Data is accompanied by an internal
data rate clock (pin 17) whose positive-going
transitions occur on the data transition.
(Synchronous modems only.)

4 CA 105 Request to Send A positive level to the modem when data

transmission is desired.

5 CB 106 Clear to Send A positive level from the modem after receipt

of Request to Send (pin 4) and when the
modem is ready to transmit.

6 CC 107 Data Set Ready A positive level from the modem when power

is on and it is ready to operate.

7 AB 102 Signal Ground

or Common
Return

Common signal and dc power ground.
Isolated from protective ground (pin1).

8 CF 109 Received Line

Signal Detector

A positive level from the modem indicating
the presence of a receive signal (carrier detect).

9 +12 volts +12 voltage reference

Digital Interface Descriptions

Page 40

Table C-1. Digital Interface Signal Descriptions (232-C)

Pin
No.

EIA-

232C

CCITT Signal Name Description

10 −12 volts −12 voltage reference
11 Not used
12 SCF Sec. Received

Line Signal
Detector

Carrier detect on a secondary channel.

13 SCB 142 Sec. Clear to

Send

Clear to send on a secondary channel.

14 SBA 141 Sec. Transmit

Data

Transmitted data on a secondary channel.

15 DB Transmit Clock

(DCE)

A transmit data clock output for use by an
external data source. Positive clock transitions

correspond to data transitions.
16 SSB Sec. Rec’d Data Received data on a secondary channel.
17 DD 115 Receive Clock A receive data rate clock output for use by the

external data sink. Positive clock transitions

correspond to data transition.
18 Not used
19 SCA 140 Sec. Request to

Send

Request to send on a secondary channel.

20 CD 108.2 Data Terminal

Ready

This circuit is positive when the DTE is

ready to originate or answer a call in dial up

operation.
21 SQ 110 Signal Quality

Indicator

Signals on this circuit are used to indicate the

probability of an error in the received data. A

positive level indicates good signal quality

while a negative level indicates poor signal

quality.
22 CE 125 Ring Indicator In direct dial operation, this circuit is positive

in response to an incoming ring signal.
23 CH 111 Data Rate Select Supplies a data rate control to select Primary

or Fallback data rate.
24 DA 113 External

Transmit Clock

A serial data rate clock input from the data

source. Positive clock transitions correspond

to data transitions.
25 Not used

Digital Interface Descriptions

Page 41

Table C-2. Digital Interface Signal Descriptions (232D)

Pin
No.

EIA-

232D

CCITT Signal Name Description

1 101 Shield No connection
2 BA 103 Transmit Data Serial digital data (to be modulated) from

a data terminal or other digital data
source. It must be accompanied by a
transmit clock (pin 15) or by an external
data rate clock (pin 24). Data transitions
should occur on positive-going
transitions at clock. (Synchronous
modems only.)

3 BB 104 Received Data Serial digital data at the output of the

modem receiver. The data is accompanied
by an internal data rate clock (pin 17)
whose positive-going transitions occur on
the data transition. (Synchronous
modems only.)

4 CA 105 Request to

Send

A positive level to the modem when data
transmission is desired.

5 CB 106 Clear to Send A positive level from the modem after

receipt of Reques t to Send and when the
modem is ready to transmit.

6 CC 107 Data Set Ready A positive level from the modem when

power is on and it is ready to operate. In
dial-up operation, the modem must be off­hook to give a high DSR signal.

7 AB 102 Signal Ground

or Common
Return

Common signal and DC power ground.

8 CF 109 Received Line

Signal Detector

A positive level from the modem
indicating the presence of a receive signal
(carrier detect).

9 +12 volts +12 voltage reference

10 −12 volts −12 voltage reference
11 CG 110 Signal Quality

Indicator

Signals on this circuit are used to indicate
the probability of an error in the receive
data. A positive level indicates good
signal quality while a negative level
indicates poor signal quality.

12 Not used

Digital Interface Descriptions

Page 42

Table C-2. Digital Interface Signal Descriptions (232D)

Pin
No.

EIA-

232D

CCITT Signal Name Description

15 114 Transmit

Clock (DCE)

A transmit data clock output for use by an
external data source. Positive clock

transitions correspond to data transitions
16 Not used
17 DD 115 Receive Clock A receive data rate clock output for use by

the external data sink. Positive clock

transitions correspond to data transition.
18 141 Local

Loopback
(Loop 3)
Control

A positive level will cause the modem to

go into a local analog loop, when strap

enabled.

20 CD 108.2 Data Terminal

Ready

This circuit is positive when the DTE is

ready to originate or answer a call in dial

up operation. DTR must always be active

(high) in 2-wire private line operation.

Cycling DTR causes retraining.
21 140 Remote Digital

Loopback

A positive level will cause a digital

loopback at a remote modem, when strap

enabled.
22 CE 125 Ring Indicator In a direct dial operation, this circuit is

positive in response to an incoming ring

signal.
23 CH 111 Data Rate

Select

Supplies a data rate control to select

Primary or Fallback data rate.
24 DA 113 External

Transmit
Clock

A serial data rate clock input from the

data source. Positive clock transitions

correspond to data transitions
25 142 Test Mode Indicates when the modem is in a test

mode.

Page 43

Appendix D

Telephone Line Cables

Table D-1 lists the functions of the modular jacks on the back panel of
the Data Shelf. The figures that follow Table D-1 show typical
telephone-line cable configurations. The last two figures show DDS
cable configurations.

Table D-1. Modular Jack Pin Functions

TELCO Jack TELSET/LL Jack

Pin Function Pin Function

1
2

R
T

}

Xmit pair of DDS
modems. Not used on
other type modems

1 2 Xmit pair (Dial backup modems

only)

3 R1/MI Receive ring for leased

line modems. Mode
indicator for dialup
modems.

3 Not used

4 R Ring – dial or leased 4 Not used
5 T Tip – dial or leased 5 Not used
6 T1/

MIC

Receive tip for leased

line modems. Mode
indicator common for
dialup modems

6 Not used

7
8

PR
PC

}

Programmable resistor
connections for dial
network modems.

7 8 Rec pair (Dial backup modems

only)

7
8

T1
R1

}

Rec pair for DOS type
modems.

Telephone Line Cables

Page 44

Figure D-1. Programmable Cable

Figure D-2. Permissive Cable

Telephone Line Cables

Page 45

Figure D-3. Leased Line Cable

Figure D-4. Example 1: DDS Cable

(cable is also used for dial backup-type modems)

Telephone Line Cables

Page 46

Figure D-5. Example 2: DDS Cable

(cable is also used for dial backup-type modems)

Page 47

Warranty

Telenetics warrants that equipment manufactured and sold by us is
free from defects in material and workmanship. Under this warranty,
our obligation is limited to repairing or replacing any equipment or
parts (not already carrying a separate warranty of their supplier)
proved to be defective by our inspection within two years after sale to
their original purchaser. This warranty shall not apply to equipment or
parts thereof which are normally consumed in operation, or to any
equipment which shall have been repaired or altered outside our plant
in any way, so as to, in the judgment of Telenetics, affect its stability
or reliability, nor which has been operated in a manner exceeding its
specifications, nor which has been altered, defaced, or has the serial
number removed. Telenetics does not assume any liability for
consequential damages and, in any event, our liability shall not exceed
the original purchase price.

The foregoing constitutes the sole and exclusive remedy of the Buyer
and exclusive liability of Telenetics AND IS IN LIEU OF ANY AND
ALL OTHER WARRANTIES EXPRESSED OR IMPLIED OR
STATUTORY AS TO THE MERCHANTABILITY, FITNESS FOR
PURPOSE SOLD, DESCRIPTION, QUALITY, PRODUCTIVENESS OR
ANY OTHER MATTER. Without limiting the foregoing, in no event
shall Telenetics be liable for the loss of use or profit or other collateral,
special or consequential damages.

Telephone Line Cables

Page 48

For the technical support of our customers, please dial [phone]
between 8:00 a.m. and 5:00 p.m. Pacific Time, Monday through Friday.
Do not return any item without first calling this number to receive
service or technical instructions. Please feel free to use this number for
technical information, application information, and modem/data
communication fault isolation. If the lines are busy, please call back.

Return Merchandise Authorization (RMA)
Procedure

Before returning any Telenetics product, an RMA number must be
obtained. Before asking for an RMA number, ascertain that the
product was purchased from Telenetics. If you bought the product
from a Distributor or Systems Integrator, the product should be
returned to that vendor.

.

Information required must include:

v Your company name and address
v The actual address we would use to return the product to you.

Please include any Mail Stop or specific delivery information.
City, state, and zip code are all required.

v Your phone and FAX numbers. Your email address.

If the above information is on your letterhead, that format is
acceptable.

For each item you wish to return, please list:
v The product model number, usually found on the serial number

Telephone Line Cables

Page 49

tag.

v The serial number for each item you wish to return.
v A description of the problem you are encountering.
v The cause of the problem (if known).

A product support specialist may call to verify that the product is
properly installed or may ask you to perform tests to insure that the
product has actually failed.

After review of the problem, an RMA number will be assigned, you
will be notified by email or FAX.

The product must be properly packed and returned to:

Telenetics
25111 Arctic Ocean
Lake Forest, CA 92630

The RMA number must be legibly displayed on the shipping carton.
No RMAs will be issued without a product review, Telenetics will not

be responsible for any product returned without an RMA number.

In the near future the RMA form will be available on our Web site
Telenetics.com/support/rma. Fill in all blanks and click on the “Submit”
button.

If you think the product may be out of warranty, include a method of
payment for repairs, either a Purchase Order number, or Credit card
number, Card Holder Name, Date of Expiration on the RMA request.
Repairs currently require 5 – 10 working days, and are returned UPS
second-day air.