Paradyne 3160-A2-GB21-50 User Manual

AREA CODE CHANGE
Please note that the area code for Paradyne Corporation in Largo, Florida has changed from 813 to 727.
For any Paradyne telephone number that appears in this manual with an 813 area code, dial 727 instead.
ACCULINK
X DATA SERVICE UNIT/
CHANNEL SERVICE UNIT
OPERATOR’S GUIDE
Document No. 3160-A2-GB21-50
January 1997
ACCULINK 316x DSU/CSU
ACCULINK 316x Data Service Unit/Channel Service Unit
Operator’s Guide 3160-A2-GB21-50
6th Edition (January 1997)
Changes and enhancements to the product and to the information herein will be documented and issued as a new release.
Standalone
FCC Registration number: See label on unit Ringer Equivalence number (REN): See label on unit Canadian Certification number: See label on unit Canadian DOC Load number: See label on unit
Carrier Card
FCC Registration number: See label on unit Ringer Equivalence number (REN): See label on unit Canadian Certification number: See label on unit Canadian DOC Load number: See label on unit

Warranty, Sales, and Service Information

Contact your sales or service representative directly for any help needed. For additional information concerning warranty , sales, service, repair, installation, documentation, or training, use one of the following methods:
Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com
Via Telephone: Call our automated call system to receive current information via fax or to speak with a company
representative.
— Within the U.S.A., call 1-800-870-2221 — International, call 813-530-2340
Trademarks
All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered service marks of their respective owners.
Printed on recycled paper
COPYRIGHT 1997 Paradyne Corporation. All rights reserved.
This publication is protected by federal copyright law. No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the express written permission of Paradyne Corporation, 8545 126th Avenue North, P.O. Box 2826, Largo, Florida 33779-2826.
Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. Further, Paradyne Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or changes.
A January 1997 3160-A2-GB21-50

Important Safety Instructions

1. Read and follow all warning notices and instructions marked on the product or included in the manual.
2. When an ac power source is used, this product is intended to be used with a three-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the grounding type plug by modifying the plug or using an adapter.
Prior to installation, use an outlet tester or a voltmeter to check the ac receptacle for the presence of earth ground. If the receptacle is not properly grounded, the installation must not continue until a qualified electrician has corrected the problem.
If a three-wire grounding type power source is not available, consult a qualified electrician to determine another method of grounding the equipment.
3. Slots and openings in the cabinet are provided for ventilation. T o ensure reliable operation of the product and to protect it from overheating, these slots and openings must not be blocked or covered.
4. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the power cord.
Important Instructions
5. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous high voltage points or other risks. Refer all servicing to qualified service personnel.
6. General purpose cables may be provided with this product. Special cables, which may be required by the regulatory inspection authority for the installation site, are the responsibility of the customer.
7. When installed in the final configuration, the product must comply with the applicable Safety Standards and regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory agencies and inspection authorities to ensure compliance.
8. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If products installed in separate buildings are interconnected, the voltage potential may cause a hazardous condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if necessary, implement corrective action prior to interconnecting the products.
9. Input power to the ac voltage configuration of this product must be provided by a UL-listed or CSA-certified power source with a Class 2 or Limited Power Source (LPS) output. Input power to the dc voltage configurations of this product must be provided by a National Electric Code (NEC) or a Canadian Electric Code (CEC) Class 2 circuit.
10. This product contains a coin cell lithium battery that is only to be replaced at the factory. Caution: There is a danger of explosion if the battery is incorrectly replaced. Replace only with the same type. Dispose of used batteries according to the battery manufacturer’s instructions. Attention: Il y a danger d’explosion s’il y a remplacement incorrect de la batterie. Remplacer uniquement avec une batterie du même type. Mettre au rebut les batteries usagées conformément aux instructions du fabricant.
B3160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
Notices
11. In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:
– Never install telephone wiring during a lightning storm. – Never install telephone jacks in wet locations unless the jack is specifically designed for
wet locations.
– Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface. – Use caution when installing or modifying telephone lines. – Avoid using a telephone (other than a cordless type) during an electrical storm. There may
be a remote risk of electric shock from lightning. – Do not use the telephone to report a gas leak in the vicinity of the leak.

THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPL Y WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE, PURSUANT TO PART 15 OF THE FCC RULES. THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT. THIS EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO FREQUENCY ENERGY AND, IF NOT INSTALLED AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS. OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS OWN EXPENSE.
THE AUTHORITY TO OPERATE THIS EQUIPMENT IS CONDITIONED BY THE REQUIREMENTS THAT NO MODIFICATIONS WILL BE MADE T O THE EQUIPMENT UNLESS THE CHANGES OR MODIFICA TIONS ARE EXPRESSL Y APPROVED BY PARADYNE.

TO USERS OF DIGITAL APPARATUS IN CANADA: THIS CLASS A DIGITAL APPARATUS MEETS ALL REQUIREMENTS OF THE CANADIAN INTERFERENCE-CAUSING
EQUIPMENT REGULATIONS. CET APPAREIL NUMÉRIQUE DE LA CLASSE A RESPECTE TOUTES LES EXIGENCES DU RÉGLEMENT SUR LE
MATÉRIEL BROUILLEUR DU CANADA.
C January 1997 3160-A2-GB21-50
Government Requirements and Equipment Return
Certain governments require that instructions pertaining to CSU and modem connection to the telephone network be included in the installation and operation manual. Specific instructions are listed in the following sections.
United States
NOTICE TO USERS OF THE UNITED STATES TELEPHONE NETWORK
1. This equipment complies with Part 68 of the FCC rules. On the equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN) for this equipment. The label is located on the bottom of the 3150 CSU, and on the 3151 CSU’s circuit card. If requested, this information must be provided to the telephone company.
2. There are two types of telephone lines associated with the standalone equipment. The T1 network connection should be made using a Universal Service Order Code (USOC) type RJ48C jack. The Service Order Code 6.0F should be specified to the telephone company when ordering the T1 line. In addition, the proper Facility Interface Code must be specified to the T elephone Company . The CSU can be configured to support any of the following framing format and line signaling techniques. The CSU’s configuration must correspond to the T1 line’s parameters. The 3150 CSU’s internal modem connects to the Public Switched T elephone Network using a USOC Type RJ11C jack. The Facility Interface Code 02LS2 along with the RJ11C jack should be specified to the telephone company when ordering a dial line for the modem. The 3151 CSU connects to the T1 network using the multi-line USOC-type RJ48H jack and does not have a PSTN interface.
Important Instructions
315x CSU Facility Interface Codes
Code
04DU9-BN 1.544 Mbps superframe format (SF) without line power 04DU9-DN 1.544 Mbps SF and B8ZS without line power 04DU9-1KN 1.544 Mbps ANSI ESF without line power 04DU-1SN 1.544 Mbps ANSI ESF and B8ZS without line power
Description
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). T o 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 RENs for the calling area.
D3160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
4. If the 315x CSU causes harm to the telephone network, the telephone company will notify you in advance that temporary discontinuance of service may be required. But if advance notice is not 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 the necessary modifications in order to maintain uninterrupted service.
6. If you experience trouble with this equipment, please contact your sales or service representative (as appropriate) for repair or warranty information. If the product needs to be returned to the company service center for repair, contact them directly for return instructions using one of the following methods:
Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com
Via Telephone: Call our automated call system to receive current information via fax or
to speak with a company representative. — Within the U.S.A., call 1-800-870-2221 — International, call 813-530-2340
If the trouble is causing harm to the telephone network, the telephone company may request that you remove the equipment from the network until the problem is resolved.
7. The equipment’s modem 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.)
8. FCC compliant telephone line cords with modular plugs are provided with this equipment. This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack which is Part 68 compliant.
Canada
NOTICE TO USERS OF THE CANADIAN TELEPHONE NETWORK
The Canadian Department of Communications label identifies certified 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.
E January 1997 3160-A2-GB21-50
Important Instructions
Repairs to certified equipment should be made by an authorized Canadian maintenance 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 to disconnect the equipment.
CAUTION
Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate.
If your equipment is in need of repair, return it using the procedures described on page A in the front of this document.
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ACCULINK 316x DSU/CSU
G January 1997 3160-A2-GB21-50

Table of Contents

Preface
Objectives and Reader Assumptions iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Documents iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Documents iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Introduction
Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Physical Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Installation
Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Examples 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SNMP or T elnet Connection Examples 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Important Instructions 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Power Sources 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabling Examples 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-Up Self-Test 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Operation
Overview 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Front Panel 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying Unit Identity 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Customer Identification 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the DTE Drop/Insert or Data Port for LED Display 3-9. . . . . . . . .
Displaying LED Conditions 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Configuration Options 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the DSU/CSU for SNMP or T elnet Access 3-14. . . . . . . . . . . . . .
Configuring SNMP Traps 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring DS0 Channels 3-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Providing Backup Capability 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the Timing Source 3-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Establishing Access Security on a Port 3-34. . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting a Password 3-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Entering a Password to Gain Access 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquiring/Releasing the User Interface 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . .
Enabling/Disabling the Front Panel 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Integral Modem in Standalone DSU/CSUs 3-37. . . . . . . . . . . . . . . .
Enabling the Communication Port for Carrier-Mounted DSU/CSUs 3-41. . . .
Deactivating the Alarm Relay for Carrier-Mounted DSU/CSUs 3-43. . . . . . . .
Resetting the DSU/CSU 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Download Operations 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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ACCULINK 316x DSU/CSU
4. Maintenance
Overview 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self-Test Health 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Health and Status 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Reports 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alarms 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SNMP Traps 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Jacks 4-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Commands 4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Loopback T ests 4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Loopback T ests 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Patterns 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lamp T est 4-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying DSU/CSU T est Status 4-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendices
A. %"!' ! !( +                                     B. ! #'"!& +                                 C. "!(%'"! #'"!& +                                  D. ! &&! !'& +                                       E.   '& +                                    F.  ')"% %&&! !%"& +                        G. %"!' !  ('"! +                                 H. &*! % ! #%'"! +                              I. $(# !' &' +                                       
Glossary
Index
ii January 1997 3160-A2-GB21-50

Preface

Objectives and Reader Assumptions
This operator’s guide contains installation, operation, and maintenance information for the ACCULINK 3160, 3161, 3164, or 3165 Data Service Unit (DSU)/Channel Service Unit (CSU).
It is assumed that you are familiar with the operation of digital data communication equipment. You should also be familiar with Simple Network Management Protocol (SNMP) if you want your DSU/CSU to be managed by an SNMP manager.
Related Documents
3000-A2-GA31 COMSPHERE 3000 Series
Carrier Installation Manual
3000-A2-GB41 COMSPHERE –48 VDC
Central Office Power Unit Installation Guide
3100-A2-GK40 ACCULINK 3151 CSU and
3161 DSU/CSU General Information Guide
3162-A2-GB20 ACCULINK 3162 Data Service
Unit/Channel Service Unit User’s Guide
Reference Documents
AT&T Technical Reference 54016
AT&T Technical Reference 62411
ANSI T1.403-1989
Industry Canada CS-03
CSA-22.2 No. 950
Industry Canada (ICES)-003
FCC Part 15
FCC Part 68
UL 1950
Management Information Base for Network
Management of TCP/IP-Based Internets: MIBII. RFC 1213, March 1991
Definitions of Managed Objects for the DS1 and E1
Interface T ypes . RFC 1406, January 1993
Definitions of Managed Objects for RS-232-like
Hardware Devices. RFC 1317, April 1992
Extensions to the Generic-Interface MIB.
RFC 1229, May 1991
iii3160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
iv January 1997 3160-A2-GB21-50

Introduction

Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTE Drop/Insert (DSX-1) Interface 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alarm Message Capability 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Emulation 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integral Modem 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Async Terminal Interface Support 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Telnet Access 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SNMP Management Support 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Physical Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standalone DSU/CSU Front Panel 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standalone DSU/CSU Rear Panel 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Overview
The DSU/CSU acts as an interface between the T1 digital network and the customer premises equipment, converting signals received from the DTE (Data T erminal Equipment) to bipolar signals that can be transmitted over T1 lines. Typical applications include shared access to network-based services, Local Area Network (LAN)/Wide Area Network (WAN) interconnection, and fractional T1 network applications.
In addition to the T1 network interface and the DTE Drop/Insert (DSX-1) interface, the Model 3160 provides two synchronous data ports while the Model 3164 provides four synchronous data ports. The Model 3165 provides one synchronous data port, but does not provide the DTE Drop/Insert (DSX-1) interface.
The Model 3161 (carrier-mounted DSU/CSU) provides two ports in addition to the DTE Drop/Insert (DSX-1) interface and is designed to fit into the COMSPHERE 3000 Series Carrier.
For more information about the carrier-mounted DSU/CSU, refer to the ACCULINK 3151 CSU and 3161
DSU/CSU General Information Guide and the COMSPHERE 3000 Series Carrier Installation Manual.
Features
The DSU/CSU optimizes network performance with a
wide range of features such as the following:
Software configuration menu displayed via a liquid
crystal display (LCD) to permit quick and easy operation, and elimination of complicated hardware strapping.
Local or remote configuration and operation
flexibility .
Several loopback capabilities and test pattern
generators.
DTE Drop/Insert (DSX-1) capability .
Alarm message display/print capability .
Front panel emulation via Windows-based Front
Panel Emulation software.
Integral modem for standalone DSU/CSUs.
Asynchronous (async) terminal interface support.
T elnet access for remote async terminal operations.
Network management provided through
industry-standard Simple Network Management Protocol (SNMP).
1-13160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
DTE Drop/Insert (DSX-1) Interface
The DTE Drop/Insert interface allows DTEs/PBXs that support the DS1 signal format to share the T1 network with other high-speed equipment. This is available on 2-port and 4-port DSU/CSUs.
Alarm Message Capability
The DSU/CSU can be attached, either locally or remotely , to an ASCII terminal or printer to display or print alarm messages. Alarms can also be displayed on a PC that is using a terminal emulation package.
Front Panel Emulation
The DSU/CSU offers functionality through Front Panel Emulation software that is similar to that provided by the DSU/CSU front panel. The functionality of the front panel is available by clicking on the function keys with the mouse rather than by pressing keys from the actual front panel.
Integral Modem
The standalone DSU/CSUs contain an integral low-speed (2400 bps), V.22bis dial modem that enables communication with remote devices such as another 316x DSU/CSU, an ASCII terminal or printer, or a PC running the 3100 Series Front Panel Emulation software.
Async Terminal Interface Support
The DSU/CSU can be configured and managed from an asynchronous (async) terminal. The async terminal’s full screen display uses a menu hierarchy similar to the DSU/CSU’s front panel. You can perform device management and configuration operations as if you are using the DSU/CSU’ s front panel, but you do not have the limitation of the 2-line, 16-character LCD.
Telnet Access
Remote async terminal operations can be performed using T elnet access. Telnet is a Transmission Control Protocol/Internet Protocol (TCP/IP) service that supports a virtual terminal interface.
SNMP Management Support
SNMP is a network management protocol that is used to monitor network performance and status, and to report alarms (i.e., traps). T o function, SNMP requires a manager consisting of a software program housed within a workstation or PC; an agent consisting of a software program housed within a device (e.g., the DSU/CSU); and a Management Information Base (MIB) consisting of a database of managed objects. The DSU/CSU can be managed by any industry-standard SNMP manager.
T wo link layer protocols, Point-to-Point Protocol (PPP) and Serial Line Internet Protocol (SLIP), are supported for connection to an external SNMP manager or network device (e.g., a router).
The SNMP manager or network device can be directly connected to the communications (COM) port. An external LAN Adapter can be connected to either the COM port or the auxiliary (AUX) port to provide Ethernet connectivity. Also, the DSU/CSU can be daisy chained together by connecting the COM port of one device to the AUX port of the other, providing SNMP connectivity.
The SNMP management system can communicate to the DSU/CSU remotely through the Facility Data Link (FDL) or (for 2-port and 4-port DSU/CSUs) the synchronous data port’ s Embedded Data Link (EDL).
1-2 January 1997 3160-A2-GB21-50
Introduction
6
Physical Description
The 316x Series consists of a Model 3160 DSU/CSU (2-port), a Model 3164 DSU/DSU (4-port), a Model 3165 DSU/CSU (1-port), and a Model 3161 (carrier-mounted) DSU/CSU.
For more information about the carrier-mounted DSU/CSU, refer to the ACCULINK 3151 CSU and 3161
DSU/CSU General Information Guide and the COMSPHERE 3000 Series Carrier Installation Manual.
ACCULINK
Standalone DSU/CSU Front Panel
The standalone DSU/CSU front panel contains,
One 2-line, 16-alphanumeric-character-per-line
liquid crystal display (LCD)
One 7-button keypad (three Function and four
directional keys)
T welve light-emitting diodes (LEDs)
Six test jacks for the Model 3160/3164 DSU/CSU,
and two test jacks for the Model 3165 DSU/CSU
The front panels are shown in Figures 1-1, 1-2,
and 1-3.
LCD
F1 F2 F3
3160
MON EQPT
NET
In
OutInOutInOut
OK
FAIL TEST SIG OOF ALRM
NETWORK RXD
EER SIG ALRM PDVOOF BPV
Figure 1-1. 3160 DSU/CSU Front Panel
DTR TXD CTS RTS
496-1493
1-33160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
7
1
ACCULINK
3164
MON EQPT
NET
In
OutInOutInOut
LCD
F1 F2 F3
OK
FAIL TEST SIG OOF ALRM
NETWORK RXD
EER SIG ALRM PDVOOF BPV
Figure 1-2. 3164 DSU/CSU Front Panel
DTR TXD CTS RTS
496-1493
ACCULINK
3165
LCD
F1 F2 F3
NET
MON
In
Out
OK
FAIL TEST SIG OOF ALRM
NETWORK
EER
DTR TXD CTS RTS
RXD
PORT
495-14567-0
Figure 1-3. 3165 DSU/CSU Front Panel
1-4 January 1997 3160-A2-GB21-50
Introduction
Standalone DSU/CSU Rear Panel
The standalone DSU/CSU rear panel contains the connectors required for the operation of the DSU/CSU
POWER
NEC
CLASS 2
INPUT
AUX PORT
CAUTION:
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
Figure 1-4. 3160 DSU/CSU Rear Panel
(Figures 1-4, 1-5, and 1-6). The connectors and their functions are listed in T able 1-1.
COM PORT MODEM
DTE
NETWORK
PORT 2PORT 1CLOCK IN
494-14540
POWER
NEC
CLASS 2
INPUT
AUX PORT
CAUTION:
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
COM PORT MODEM
Figure 1-5. 3164 DSU/CSU Rear Panel
DTE
NETWORK
PORT 4PORT 3
PORT 2PORT 1CLOCK IN
494-14564
1-53160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
POWER
NEC
CLASS 2
INPUT
PORT 1
CAUTION:
COM PORT MODEM
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
NETWORK
495-14565-01
Figure 1-6. 3165 DSU/CSU Rear Panel
Table 1-1
Standalone DSU/CSU Rear Panel Connectors
Name
POWER Supplies power to the DSU/CSU by providing an attachment for the ac power
module or the optional dc power cable (+24 or –48 Vdc).
AUX PORT Supports SNMP LAN Adapter or daisy-chain connections.
Function
COM PORT Provides access to a locally connected PC, ASCII terminal or printer, SNMP
management link, or async terminal interface.
MODEM Provides a connection to the integral modem for access to a remotely connected
PC, ASCII terminal or printer, SNMP management link, or async terminal
interface. NETWORK Provides access to the T1 network. DTE (Model 3160/3164) Provides access to the DTE Drop/Insert (DSX-1) interface. CLOCK IN (Models 3160/3164) Used to attach an external clock to the DSU/CSU. PORTs 1–4 Used to connect the customer’s synchronous data DTE to the DSU/CSU.
1-6 January 1997 3160-A2-GB21-50

Installation

Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Examples 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SNMP or Telnet Connection Examples 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Important Instructions 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Power Sources 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the +24 Vdc Power Supply 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Single –48 Vdc Power Supply 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Redundant –48 Vdc Power Supply 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabling Examples 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-Up Self-Test 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Overview
This chapter contains information for installing your standalone DSU/CSU. It includes application examples, cabling, and power-up information.
NOTE
Installation instructions for the carrier-mounted DSU/CSU are located in the
CSU and 3161 DSU/CSU General Information Guide COMSPHERE 3000 Series Carrier Installation Manual
ACCULINK 3151
and the
.
Application Examples
The DSU/CSU acts as an interface between the T1
digital network and the customer’s equipment.
The DSU/CSU is connected to the customer’s equipment through one of the synchronous data ports (POR Ts 1– 4) or the DTE Drop/Insert (DSX-1) interface. It is connected to the T1 digital network through the network interface.
NOTE
The DTE Drop/Insert (DSX-1) interface is only available on 2-port and 4-port DSU/CSUs.
Some common applications for the DSU/CSU are:
Point-to-Point LAN interconnection (Figure 2-1).
Shared access to network-based services
(Figure 2-2).
Fractional T1 network applications (Figure 2-3).
2-13160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
1
NETWORK
LAN
ROUTER
DSU/CSU
PBX
LAN
ROUTER
DSU/CSU
Figure 2-1. Point-to-Point Application Example
NETWORK SERVICES
DSU/CSU
Figure 2-2. Shared Access Application Example
LAN
ROUTER
496-15003-01
496-15004-0
LAN
ROUTER
DSU/CSU
FRACTIONAL
LAN
ROUTER
NETWORK
DSU/CSU
LAN
ROUTER
DSU/CSU
LAN
ROUTER
496-15005-01
Figure 2-3. Fractional T1 Application Example
2-2 January 1997 3160-A2-GB21-50
Installation
SNMP or Telnet Connection Examples
The DSU/CSU can be connected to an SNMP or T elnet
system in a number of ways. Some examples include:
Directly connecting the COM port to the SNMP or
T elnet device (Figure 2-4).
Connecting the COM port to a network device (e.g.,
a router) (Figure 2-5).
Connecting the COM port or the AUX port to an
external LAN Adapter for Ethernet connectivity
(Figure 2-6).
ETHERNET
PPP/SLIP
LAN
ROUTER
Daisy chaining the COM port of one device to the
AUX port of the other (Figure 2-7).
Remotely accessing the DSU/CSU through the
Facility Data Link (FDL) or the synchronous data port’s Embedded Data Link (EDL) (Figure 2-8).
NOTE
EDL is only available on 2-port and 4-port DSU/CSUs.
DSU/CSU
NETWORK
496-15006-01
Figure 2-4. Direct Connection
ETHERNET
LAN
ROUTER
PPP/SLIP
DSU/CSU
P
ara
dyn
e
Figure 2-5. Connection through a Router
NETWORK
496-15007-01
2-33160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
1
ETHERNET
LAN
ROUTER
LAN
ADAPTER
DSU/CSU
PPP
Figure 2-6. Connection through a LAN Adapter
DSU/CSU
ETHERNET
LAN
ROUTER
PPP
PPP
DSU/CSU
DSU/CSU
NETWORK
496-15008-01
NETWORK
FDL/EDL
LAN
ADAPTER
PPP
Figure 2-7. LAN Adapter and Daisy Chaining
DSU/CSUDSU/CSU
LAN
ROUTER
NETWORK
PPP
LAN
ADAPTER
Figure 2-8. Remote Access through FDL/EDL
496-15009-01
ETHERNET
496-15010-0
2-4 January 1997 3160-A2-GB21-50
Installation
1
Important Instructions
Read and follow all warning notices and instructions
marked on the DSU/CSU or included in this guide.
For a complete listing of the safety instructions, see the
Important Safety Instructions section at the beginning of
this guide.
HANDLING PRECAUTIONS
FOR
ST ATIC-SENSITIVE DEVICES
This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation. When performing installation procedures, however, take proper static control precautions to prevent damage to equipment. If you are not sure of the proper static control precautions, contact your nearest sales or service representative.
Optional Power Sources
The DSU/CSU is typically powered by the ac power module. Use the following procedures only if you want to use an optional dc power source.
Using the optional dc power cable, the DSU/CSU is capable of operating on either a +24 Vdc power source, –48 Vdc single source battery, or –48 Vdc redundant source batteries (for power backup). T o use dc power, choose one of the following power supply types.
Installing the +24 Vdc Power Supply
T o install the DSU/CSU using a +24 Vdc power supply, refer to Figure 2-9 and use the following procedure.
T o install the +24 Vdc power supply,
1. Connect the green wire to a suitable earth ground.
2. Connect the white wire to the +24 Vdc return.
3. Connect the orange wire to the +24 Vdc source.
DSU/CSU POWER
PLUG
1 2 3 4 5 6
Figure 2-9. +24 Vdc Power Supply Pinouts
BLACK
RED
GREEN
WHITE
ORANGE
BLUE
4. Cut the black, red, and blue wires off at the outer insulation.
5. Plug the power connector into the DSU/CSU.
TO CUSTOMER-SUPPLIED BATTERY
X X
EARTH GROUND +24 VDC RETURN +24 VDC SOURCE
X
496-14298-0
2-53160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
1
Installing the Single –48 Vdc Power Supply
T o install the DSU/CSU using a single source –48 Vdc power supply, refer to Figure 2-10 and use the following procedure.
T o install the –48 Vdc single source power supply,
1. Connect the black and red wires to the –48 Vdc return source.
DSU/CSU POWER
PLUG
1 2 3 4 5 6
BLACK
RED
GREEN
WHITE
ORANGE
BLUE
2. Connect the green wire to a suitable earth ground.
3. Connect the orange and blue wires to the –48 Vdc input source.
4. Cut the white wire off at the outer insulation.
5. Plug the power connector into the DSU/CSU.
TO CUSTOMER-SUPPLIED BATTERY
–48 VDC RETURN
EARTH GROUND
X
–48 VDC INPUT
496-14299-0
Figure 2-10. –48 Vdc Single Source Power Supply Pinouts
2-6 January 1997 3160-A2-GB21-50
Installation
1
Installing the Redundant –48 Vdc Power Supply
T o install the DSU/CSU using a redundant –48 Vdc power supply, refer to Figure 2-11 and use the following procedure.
T o install the redundant –48 Vdc power supply,
1. Connect the black wire to the –48 Vdc return source B.
2. Connect the red wire to the –48 Vdc return source A.
DSU/CSU POWER
PLUG
1 2 3 4 5 6
BLACK
RED
GREEN
WHITE
ORANGE
BLUE
3. Connect the green wire to a suitable earth ground.
4. Connect the orange wire to the –48 Vdc input source B.
5. Connect the blue wire to the –48 Vdc input source A.
6. Cut the white wire off at the outer insulation.
7. Plug the power connector into the DSU/CSU.
TO CUSTOMER-SUPPLIED BATTERY
–48 VDC RETURN B –48 VDC RETURN A EARTH GROUND
X
–48 VDC INPUT B –48 VDC INPUT A
496-14300-0
Figure 2-11. –48 Vdc Redundant Source Power Supply Pinouts
2-73160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
Cabling Examples
The DSU/CSU is supplied with an ac power module
and a VF cable for the integral modem.
MODEM
TERMINAL
COM
PORT
MODEM
PORT
NETWORK
PORT
PSTN
Optional cables are described in Appendix D, Pin
Assignments.
Figure 2-12 illustrates some cabling examples.
OR OR
SNMP
MANAGER
MODEM
PORT
MODEM
3164 DSU/CSU
PC
FRONT
PANEL
POWER
CLASS 2
INPUT
POWER
COM PORT MODEM
AUX PORT
NEC
CAUTION:
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
SERIAL
PORT
T1 OR SERIAL CONNECTIONS DIAL CONNECTIONS
NETWORK
DTE
PORT 2PORT 1CLOCK IN
3160
DSU/CSU
NETWORK
PORT
T1 NETWORK
NETWORK
PORT
COM PORT MODEM
AUX PORT
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
OR
OR
TERMINAL
NETWORK
DTE
PORT 4PORT 3
PORT 2PORT 1CLOCK IN
TO
ROUTER
496-14935
POWER
SNMP
MANAGER
3164
DSU/CSU
COM PORT
POWER
NEC
CLASS 2
CAUTION:
INPUT
Figure 2-12. Cabling Examples
2-8 January 1997 3160-A2-GB21-50
Installation
Power-Up Self-Test
After you connect the DSU/CSU to a power source, the unit performs the power-up self-test to ensure that it is in good working order. The DSU/CSU performs this test on itself upon power-up or after a device reset, unless it has been disabled by the Self-T est configuration option (see Appendix C, Configuration Options).
The self-test includes a basic processor test, a limited memory test, a code checksum test, and basic verification tests of the internal components. The front panel LCD displays the progress and pass/fail status of these power-up tests.
The power-up self-test consists of the following steps:
1. Once the DSU/CSU is plugged in, the In Progress screen appears and the Fail LED blinks ON and Off continuously.
Self-Test: In Progress
F1
F2
F3
If the self-test fails, the Failed screen appears for five seconds. The Fail LED lights, and an eight-digit failure code (xxxxxxxx) is displayed for use by service personnel to determine the cause of the self-test failure. The DSU/CSU continues to try to operate. If you are in doubt about the results of the self-test, use the Self-T est Health command to display the status of this test (see the Self-Test
Health section in Chapter 4, Maintenance).
Self-Test:
F1
xxxxxxxx
F2
F3
Failed
4. The top-level menu screen appears.
DSU ESF Stat Test Cnfig
2. All the LEDs then start to flash simultaneously in the pattern twice ON, then Off. Then, the LCD begins to flash characters and numbers in the same pattern, alternating with the flashing LEDs.
3. If the self-test is successful, the Passed screen appears for one second, the Fail LED turns Off and the OK LED lights.
Self-Test: Passed
F1
F2
F3
F1
F2
F3
2-93160-A2-GB21-50 January 1997
ACCULINK 316x DSU/CSU
2-10 January 1997 3160-A2-GB21-50

Operation

Overview 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Front Panel 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LCD 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keypad. 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test Jacks. 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEDs 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying Unit Identity 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Customer Identification 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the DTE Drop/Insert or Data Port for LED Display 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying LED Conditions 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Configuration Options 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying/Editing Configuration Options 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Saving Edit Changes 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting/Copying to a Specific Port 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the DSU/CSU for SNMP or Telnet Access 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the Port 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the IP Address 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the Link Layer Protocol 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifying the Community Name(s) and Access Type(s) 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring SNMP Traps 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enabling SNMP Trap Messages 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the Number of Trap Managers 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring a Destination for SNMP Traps 3-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring DS0 Channels 3-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying DS0 Channel Assignments 3-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allocating Data Ports 3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block or ACAMI Assignment Method 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Individual Channel Assignment Method 3-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allocating DS0 Channels from the DTE Drop/Insert Interface to the Network Interface 3-29. . . . . . . . .
Clearing DS0 Channel Allocation 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Providing Backup Capability 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the Timing Source 3-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring for Network Timing 3-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring for External Timing 3-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Establishing Access Security on a Port 3-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting a Password 3-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Entering a Password to Gain Access 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquiring/Releasing the User Interface 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquiring the Active User Interface 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Releasing the Active User Interface 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enabling/Disabling the Front Panel 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Integral Modem in Standalone DSU/CSUs 3-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Entering Numbers in the Phone Directories 3-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initiating a Call for Front Panel Pass-Through Operation 3-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initiating a Call for PC, ASCII Terminal/Printer, or SNMP Operation 3-39. . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting the Modem Connection 3-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enabling the Communication Port for Carrier-Mounted DSU/CSUs 3-41. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deactivating the Alarm Relay for Carrier-Mounted DSU/CSUs 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resetting the DSU/CSU 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Download Operations 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3-13160-A2-GB21-50 January 1997
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