AT&T Definity - Enterprise R 8-2 Installation And Maint - for Survivable Rem

DEFINITY

Enterprise Communications Server

Release 8.2 Installation and Maintenance for Survivable Remote EPN

Important information:

The Survivable Remote EPN (SREPN) is a disaster recovery operation rather than an additional reliability option. As such, the SREPN, if administered properly, provides phone service to users on the remote EPN when the link to the main R8r processor fails or is broken, or when the R8r processor or center stage fails.

The SREPN can be both a single carrier cabinet and a multicarrier cabinet. The survivable remote processor (SRP) is available only as a single carrier cabinet and does not hold any port cards. You install and administer the SRP (with its associated SREPN) as if it were a standalone R8si with its own dial plan and AAR/ARS patterns. This means that you must administer the SRP (

the R8r PPN

you will administer equipment on the SRP to duplicate, as much as possible, the service provided by the R8r PPN.

administered from the SRP, only those translations administered on the SRP will operate when a failure occurs.

) for all phones and other equipment connected to SREPN. Ideally,

Given that the R8r PPN is independantly

in addition to

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Comcode 108596941

DEFINITY

Enterprise Communications Server

Release 7 Installation and Maintenance for Survivable Remote EPN

555-233-102 Comcode 108343245 Issue 2 June 1999

Notice Every effort was made to ensure that the informa tion in thi s book was complete and accura te at th e time o f prin tin g. Howev er , in format ion is subject to change.

Canadian Department of Com m unications (DOC) Interference Information This digital apparatus does no t exceed the Class A limits for radio noise emissions set out in the radi o int er f erence regulations of the Canadian Department of Com m unications.

Y our Responsibility for Your System’s Security Toll fraud is the unauthorized use of your tel ec ommunications system by an unauthorized party, for example, persons other than your company’s employees, agents, subcontractors, or persons working on your company’ s beh alf. Not e t hat t her e ma y be a ris k of toll f rau d ass oci at ed with your telecommunications system and, if toll fraud occurs, it can result in substantial additional charges for your telecommunications services.

You and your system manager are responsible for the security of your system, such as programming and confi guring your equipment to prevent unauthorized use. The system manager is also responsibl e for reading all installation, instruc tion, and system administration doc uments provided with this pro duct in order to fully understand th e fe atures that can introduce risk of toll fraud and the steps that can be taken to reduce that risk. Lucent Technologies does not warrant that this product is immune fro m or will prevent unauthorize d use of common-carrier telecommun ic ation services or facilities accessed through or connected to it. Lucent Technologies will not be responsible for any charges that result from such unauthorized use.

Lucent Technologies Fraud Intervention If you suspect that you are being victimized by toll fraud and you need technical support or assistan ce , c al l Technical Service Cen ter Toll Fraud Intervention Hotline at 1 800 643-2353 or contac t yo ur local Lucent repr esentative.

Federal Communications Commission Statement Part 15: Class A Statement. This equipm e nt ha s been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limi ts a re de signed 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 en ergy and, if not installed and used in a ccordance with the instruction s , may ca use ha rmful interference to radio communications. Operati o n of th is eq ui pment in a residential area is likely to cause harmful interference, in which case the user will be required to corr ec t the interference at his o w n expense.

Le Présent Appareil Nom

dépassant les limites applicables aux appareils numériques de la class A préscrites dans le reglement sur le brouillage radioélectrique édicté par le ministére des Communications du Canada.

Trademarks See the preface of this docum e nt.

Ordering Information Call: Lucent Technologies BCS Publications Center

Voice 1 800 457-1235 International Voice 317 322-6416 Fax 1 800 457-1764 International Fax 317 322-6699

Write: Lucen t Technologies BCS Publicatio ns Ce nter

2855 N. Franklin Road Indianapolis, IN 46219

Order: Document No. 555-233-102

Comcode 10834324 5 Issue 2, June 1999

For additional documents, refer to the section in “About This Document” entitled “Related Resources.”

Y ou can be placed on a standing order list for this and other documents you may need. Standing order will enable you to automatically receive updated versions of individu al documents or document sets, billed to account information that you provide. For more information on standing orders, or to be put on a list to receive future issues of this document, contact the Lucent Technologies Publications Center.

European Union Dec la ration of Conformity The “CE” mark affixed to the DEFIN ITY® equipment described in this book indicates that the e quipment conforms to the foll owing European Union (EU) Directives:

• Electromagne tic Compatibilit y (89 /336/EEC)

• Low Voltage (73/23/E EC)

• Telecommunications Terminal Equip ment (TTE) i-CTR3 BRI and i-CTR4 PRI

For more information on standards compliance, contact your l ocal distributor.

érique n’é

met pas de bruits radioélectriques

Part 68: Network Registration Number. This equipment is registered with the FCC in accordance with Part 68 o f th e FCC Rules. I t is identified by FCC registration number AS593M-13283-MF-E.

Part 68: Answer-Supervision Signaling. Allowing this equipment to be operated in a manner th at does not provide proper answer-super visi on signaling is in violation of Part 68 R ules. Thi s equ ipm e nt ret urns answer-supervision signals to the public switched netw ork whe n:

• Answered b y the called statio n

• Answered by the attendant

• Routed to a recorded anno uncement that can be administered by the CPE user

This equipment returns answer-supervision signals on all DID calls forwarded back to the publi c swi tched telephone network. Permissible exceptions are:

• A call is unanswered

• A busy tone is received

• A reorder tone is received

Comments To comment on this document, re turn the comment ca rd at the front of the document.

Acknowledgment This document was prepared by Product Documentation Development, Lucent Technologies, Denver, CO.

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Contents

Contents iii About This Document vii

■ Purpose vii

The Survivable Remote Expansion Port Network (SREPN) vii

■ Features not supported ix

■ Intended audience x

■ Conventions used x

■ Safety precautions xi

Electromagnetic interference xii Static electricity xii

■ Remove/Install Circuit Packs xii

■ Security issues xii

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iii

■ Standards compliance xiii

■ Electromagnetic compatibility standards xiii

European Union standards xiv

■ Trademarks and Servic e Mark s xiv

■ Related documents xv

■ Federal Communications Commission statement xvi

Part 68: Statement xvi

■ How to order documentation xviii

■ How to comment on this document xix

■ Where to call for technical support xix

1 SREPN Installation 1-1

■ Check customer’s order 1-1

■ Correcting shipping errors 1-1

■ Unpack and inspect 1-1

■ Install the SRP cabinet 1-7

Connect cabinet ground 1-7 Install rear panels 1-7 Install ground plates 1-8

■ Connect cables to the SRP 1-12

Connect SRP fiber cables for standard/high reliability1-12 Connect SRP fiber cables for critical reliability 1-12

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Contents

■ Connect the SRP and management terminal 1-15

■ MDF connections 1-16

■ Power up the SRP 1-17

■ Administer the Release 7r and SRP 1-17

Administration of the Release 7r 1-18 Administration of the SRP 1-18

■ Replace Release 7r circuit packs 1-23

■ Replace EPN circuit packs

and make cable connections 1-23

Connect DS1CONV cables for standard/high reliability 1-24

Connect DS1CONV cables for critical reliability 1-24

Connect direct fiber cables for standard/high reliability 1-24

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Connect direct fiber cables for critical reliability 1-24

■ Test the SRP 1-29

Test the survive mode function 1-30 Verify the test switch operation 1-32 Verify the SRP status 1-33

■ Upgrade the SRP 1-33

2 SREPN Maintenance 2-1

■ Before starting to troubleshoot 2-1

■ SREPN connections 2-1

Required and optional circuit packs 2-3 Interfacing circuit packs 2-4 Transfer sequence to Survive mode 2-6 SREPN connections 2-9

■ Maintenance procedure 2-12

Check system status 2-12 Repair the link connection 2-21 Reconnect the Release 7r to the EPN 2-22 Post-reset check 2-22 Power alarms 2-23 System resets 2-24

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Contents

■ Fault isolation procedures 2-25

Fiber fault isolatio n 2-2 5 Loopback tests 2-30 DS1 interface cable pinout 2-36

■ 110 block cross-connect pins 2-38

■ Replacing the TN2301 circuit pack 2-39

Unseat the circuit pack 2-39 Replace the circuit pack 2-40 Reseat the circuit pack 2-42

■ Restore from remote location 2-42

■ System links 2-44

IN Index IN-1

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DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

Contents

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DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

About This Document

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About This Document

Purpose

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viiPurpose

The Survivable Remote Expansion Port Network (SREPN)

This book provides installation and maintenance procedures for technicians installing and maintaining the Survivable Remote Expansion Port Network (SREPN).

The SREPN provides EPN service to the customer when the link to the main R7r processor fails or is broken, or when the R7r processor or center stage fails. The EPN can be located in either multicarrier or single carrier cabinets. SREPN is a disaster recovery operation rather than an additional reliability option.

The Survivable Remote Processor (SRP) is a TN790-based processor complex collocated with the remote EPN cabinet. The SRP and its EPN cabinet are connected wi th fiber optic cabling.

The EPN can be remoted over fiber optic cables through the Switch Node Interface (SNI) and Expansion Interface (EI) circuit packs or over DS1-CONV.

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About This Document

Figure 1 shows an example of the essential hardware connections for the

Survivable Remote EPN over DS1-CONV facilities.

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viiiPurpos e

C D

cydfsrs2 KLC 010899

Figure Notes:

1. Release 7r

2. Release 7si processor complex

TN2301

Collocated equipment

3. Survivable Remote process or (SRP)

4. Survivable Remote EPN (SREPN )

1 C

Figure 1. Survivable Remote EPN hardware connections

(over DS1-CONV facilities)

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Features not supported

The following table lists the features that are not supported by SREPN.

Table 1. Features not supported by SREPN

AAR Demand Print Audible Message Waiting Digital Multiplexed Interface Audio Information Exchange (AUDIX) Interface Distributed Communications System Call Charge Information Enhanced DCS Call Detail Recording Extension Number Portability Call Management System External Device Alarming CallVisor Adjunct Switch Application Interface Flexible Billing Centralized Attendant Service Inbound Call Management Customer-Provided-Equipment Alarm Inter-PBX Attendant Service (IAS) DCS Intraflow and Interflow

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ixFeatures not supported

DCS Alphanumeric Display for Terminals Look-Ahead Interflow DCS Attendant Control of Trunk Group Access Look-Ahead Routing DCS Attendant Direct Trunk Group Selection Messaging Server Interface (MAPD) DCS Attendant Display Node Number Routing DCS Automatic Callback Private Network Access DCS Automatic Circuit Assurance Property Management System Interface DCS Busy Verification of Terminals and Trunks QSIG DCS Call Coverage QSIG Call Forwarding (D iversion) DCS Call Forwarding QSIG Call Transfer DCS Call Waiting QSIG Name and Number Identification DCS Distinctive Ringing QSIG Path Replac ement (ANF-PR) DCS Leave Word Calling QSIG Transit Counter (ANF-TC) DCS Multiappearance Conference/Transfer Reason Codes DCS Over ISDN-PRI D-channel Uniform Dial Plan DCS Trunk Group Busy/Warning Indication Voice Response Integration

Continued on next page

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Intended audience

The information in this book is intended for use by:

■ Installation or maintenance technicians dispatched to a DEFINITY System

site to either install the SR EP N equipment or in response to a trouble alarm or a user trouble report

■ A maintenance technician located at a remote maintenance facility

■ The user’s assigned maintenance technician.

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xIntended audience

Technicians are expected to have a knowledge of telecommunications fundamentals and of the DEFINITY extent that the procedures in this book can be performed, in most cases, without assistance.

This book is not intended to solve all levels of troubles. It is limited to troubles that can be solved by using the Alarm Log, Error Log, trouble-clearing procedures, maintenance tests, and traditional troubleshooting methods. If trouble conditions persist, it is the responsibility of the maintenance technician to escalate the problem to a higher level of technical support. Escalation should conform to the procedures in the

■ Chapter 1, ‘‘SREPN Installation’’ covers the upgrade path and installation

instructions for the Survivable Remote EPN equipment.

■ Chapter 2, ‘‘SREPN Maintenance’’ covers the trouble isolation, repair, and

reset of the Survivable Remote EPN system.

Conventions used

This document uses the following typographic conventions:

■ Information you type at the DEFINITY system access terminal (SAT)

terminal is shown in the following typeface:

maintenance

Enterprise Communications Server to the

Technical and Administration Escalation Plan

list system-parameters

■ Information displayed on the terminal screen is shown in the following

typeface:

■ Keyboard keys are shown in the following typeface: Enter.

The following conventions describe the systems referred to in this document.

■ The word

system

, is a general term meaning the Release 7 DEFINITY

Enterprise Communications Server.

■ Systems in this book are called: Release 7, R7r, and R7si.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

About This Document

■ Circuit pack codes (such as TN790B or TN2182B) are shown with the

minimum acceptable alphabetic suffix (for example, “B” in the code TN2182B).

The alphabetic suffix of the circuit pack is very important in the Survivable Remote equipment configuration. And, not every minimum or a higher suffix code is necessarily acceptable.

NOTE:

Refer to

Technical Monthly: Reference Guide for Circuit Pack

Vintages and Change Notices

usable vintages of specific circuit pack codes (including the suffix) in a Release 7 system.

■ DEFINITY Enterprise Communications Server is abbreviated as DEFINITY

ECS.

Admonishments used in this book are as follows:

CAUTION:

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vintage

, for current information about the

This sign is used to indicate possible harm to software, possible loss of data, or possible service interruptions.

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xiSafety precautions

of either the

WARNING:

This sign is used where there is possible harm to hardware or equipment.

DANGER:

This sign is used to indicate possible harm or injury to people.

Safety precautions

When performing maintenance or translation procedures on the system, users must observe certain precautions. Observe all caution, warning, and danger admonishments to prevent loss of service, possible equipment damage, and possible personal injury. In addition, the following precautions regarding electromagnetic interference (EMI) and static electricity must be observed:

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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Electromagnetic interference

This equipment generates, uses, and can radiate radio frequency energy. Electromagnetic fields radiating from the switch may cause noise in the

customer’s equipment, called electromagnetic interference (EMI). If the equipment is not installed and used in accordance with this installation and maintenance book, radio interference may result.

WARNING:

To maintain the EMI integrity of the system, maintenance personnel must ensure that all cabinet panels, covers, and so forth, are firmly secured

before leaving the customer’s premises.

Static electricity

To prevent or reduce electrostatic discharge (ESD), always attach a wrist grounding strap before working on switch components or handling circuit packs.

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xiiRemove/Install Circuit Packs

CAUTION:

Electrostatic discharge can damage or destroy circuit packs containing integrated circuits (ICs).

The ESD wrist strap, cable assembly, and spare fuses are packed in a plastic bag and placed in the top of the system cabinet. Use the ESD wrist strap when troubleshooting, performing maintenance, or handling any circuit packs.

Remove/Install Circuit Packs

CAUTION:

When the power is on:

■

The control circuit packs cannot be removed or installed.

■

The port circuit packs can be removed or installed.

Security issues

A number of matters concerning maintenance are affected by security issues. For details, be sure to consult the 555-025-600.

BCS Products Security Handbook

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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CAUTION:

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Standards compliance

The equipment presented in this document complies with the following (as appropriate):

ITU-T (Formerly CCITT) ANSI Australia AS3260 ECMA FCC Part 15 and Part 68 IEC 825 ETSI EN55022 IEC950 IPNS EN50081 UL 1459 DPNSS EN50082 UL1950

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xiiiStandards compliance

National ISDN-1 CISPR22 CSA C222 Number 225 National ISDN-2 Australia AS3548 (AS/NZ3548) TS001 ISO-9000

Electromagnetic compatibility standards

This product complies with and conforms to the following:

■ Limits and Methods of Measurements of Radio Interference

Characteristics of Information Technology Equipment, EN55022 (CISPR22), 1993

■ EN50082-1, E uropean Generic Immunity Standard

■ FCC Parts 15 and 68

■ Australia AS3548

NOTE:

The system conforms to Class A (industrial) equipment; voice terminals meet Class B requirements.

■ Electrostatic Discharge (ESD) IEC 1000-4-2

■ Radiated radio frequency field IEC 1000-4-3

■ Electrical Fast Transient IEC 1000-4-4

■ Lightning effects IEC 1000-4-5

■ Conducted radio frequency IEC 1000-4-6

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About This Document

■ Mains frequency magnetic field IEC 1000-4-8

■ Low frequency mains disturbance

The system conforms to the following:

■ Electromagnetic compatibility General Immunity Standard, part 1;

residential, commercial, light industry, EN50082-1, CENELEC, 1991

■ Issue 1 (1984) and Issue 2 (1992), Electrostatic discharge immunity

requirements (EN55024, Part 2) IEC 1000-4-2

■ Radiated radio frequency field immunity requirements IEC 1000-4-3

■ Electrical fast transient/burst immunity requirements IEC 1000-4-4

European Union standards

Lucent Technologies Business Communications Systems declares that the

DEFINITY equipment specified in this document bearing the “CE” mark conforms to the European Union Electromagnetic Compatibility Directives.

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xivTrademarks and Service Mar ks

The “CE” (Conformité Europeénne) mark indicates conformance to the:

■ European Union Electromagnetic Compatibility Directive (89/336/EEC)

■ Low Voltage Directive (73/23/EEC)

■ Telecommunication Terminal Equipment (TTE) Directive (91/263/EEC)

■ i-CTR3 Basic Rate Interface (BRI) and i-CTR4 Primary Rate Interface (PRI)

as applicable.

The “CE” mark is applied to the following Release 6 products:

■ Global AC powered Multi-Carrier Cabinet (MCC)

■ DC powered Multi-Carrier Cabinet (MCC) with 25-Hz ring generator

■ AC powered Single-Carrier Cabinet (SCC) with 25-Hz ring generator

■ AC powered Compact Single-Carrier Cabinet (CSCC) with 25-Hz ring

generator

■ Enhanced DC Power System

Trademarks and Service Marks

The following are trademarks or registered trademarks of Lucent Technologies:

■ 5ESS™, 4ESS™

■ AUDIX

■ Callvisor

■ Callmaster

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About This Document

■ CentreVu™

■ CONVERSANT

■ DEFINITY

■ DIMENSION

■ MERLIN

■ VOICE POWER

The following are trademarks or registered trademarks of AT&T:

■ ACCUNET

■ DATAPHONE

■ MEGACOM

■ MULTIQUEST

■ TELESEER

The following are trademarks or registered trademarks of other companies:

■ Ascend

■ Audichron

■ MS-DOS

■ MicroChannel

■ MULTIQUEST

■ PagePac

■ UNIX

(registered trademark of Ascend, Inc.)

(registered trademark of the Audichron Company)

(registered trademark of the Microsoft Corporation)

(registered trademark of IBM Systems)

(registered trademark of Telecommunications Service)

(trademark of the Dracon Division of the Harris Corporation)

(trademark of the Novell Corporation)

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xvRelated documents

Federal Communications Commission statement

Part 68: Statement

Part 68: Answer-Supervision S ignaling. Allowing this equipment to be operated in a manner that does not provide proper answer-supervision signaling is in violation of Part 68 rules. This equipment returns answer-supervision signals to the public-switched network when:

■ Answered by the called station

■ Answered by the attendant

■ Routed to a recorded announcement that can be administered by the CPE

user

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This equipment returns answer-supervision signals on all DID calls forwarded back to the public-switched telephone network, with these exceptions:

■ A call is unanswered

■ A busy tone is received

■ A reorder tone is received

This equipment is capable of providing users access to interstate providers of operator services through the use of access codes. Modification of this equipment by call aggregators to block access dialing codes is a violation of the Telep hon e Operator Consum er s Act of 1990.

This equipment complies with Part 68 of the FCC Rules. On the rear of this equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN) for this equipment. If requested, this information must be provided to the telephone company. The REN is used to determine the number of devices connected to the telephone line. Excessive RENs on the telephone line may result in devices not ringing in response to an incoming call. In most, but not all areas, the sum of RENs should not exceed 5.0. To be certain of the number of devices that can be connected to a line, as determined by the total RENs, contact the local telephone company.

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xviiFederal Communications Commission statement

NOTE:

REN is not required for some types of analog or digital facilities.

Means of connection

Connection of this equipment to the telephone network is shown in the following table.

Manufacturer’s Port

Identifier FIC Code

Off/On Premises Station OL13C 9.0F RJ2GX, RJ21X,

DID Trunk 02RV2-T 0.0B RJ2GX, RJ21X CO Trunk 02GS2 0.3A RJ21X CO Trunk 02LS2 0.3A RJ21X Tie Trunk TL31M 9.0F RJ2GX

1.544 Digital Interface 04DU9-B, C 6.0P RJ48C, RJ48M

1.544 Digital Interface 04DU9-BN, KN 6.0P RJ48C, RJ48M 120A2 Channel Service Unit 04DU9-DN 6.0P RJ48C

SOC/REN/

A.S. Code Network Jacks

RJ11C

If the terminal equipment (DEFINITY® System) causes harm to the telephone network, the telephone company may notify you in advance that temporary

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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discontinuance of service is be required. But if advance notice is not practical, the telephone company may 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.

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 so you can make the necessary modifications to maintain uninterrupted service.

If trouble is experienced with this equipment or for repair or warranty information, please contact the Technical Service Center at 1-800-248-1234. If the equipment causes harm to the telephone network, the telephone company may request that you disconnect the equipment until the problem is resolved.

It is recommended that repairs be performed by Lucent Technologies-certified technicians.

The equipment cannot be used on public coin phone 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.

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xviiiHow to order documentation

This equipment, if it uses a telephone receiver, is hearing aid compatible.

How to order documentation

In addition to this book, other description, installation and test, maintenance, and administration books are available. A complete list of DEFINITY books can be found in the 555-000-010.

This document and any other DEFINITY documentation can be ordered directly from the Lucent Technologies Business Communications System Publications Fulfillment Center toll free at 1-800-457-1235 (voice) and 1-800-457-1764 (fax). International customers should use 317-322-6791 (voice) and 317-322-6849 (fax).

Business Communications System Publications Catalog

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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How to comment on this document

Lucent Technologies welcomes your feedback. Please fill out the reader comment card found at the front of this manual and return it. Your comments are of great value and help improve our documentation.

If the reader comment card is missing, F AX your comments to 1-303-538-1741 or

to your Lucent Technologies representative, and mention this document’s name and number,

and Maintenance for Survivable Remote EPN,

DEFINITY Enterprise Communication Server Release 7 Installation

555-233-102.

Where to call for technical support

Region Phone Number

Streamlined Implementation (for missing equipment) 1-800-772-5409 Technical Service Center (INADS Database Administration) 1-800-248-1111

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xixHow to comment on this document

Asia/Pacific Regional Support Center 65-872-8686 Western Europe/South Africa/Middle East 441-252-774-800 Eastern/Central Europe 361-345-4334 ITAC 1-303-804-3777 Latin/Central America & Caribbean 1-303-804-3778

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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xxWhere to call for technical support

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Installation

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SREPN Installation

Check customer’s order

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1-1Check customer’s order

Check the customer’s order and the shipping packing lists to confirm that all equipment is present. If any equipment is missing, report this to your Lucent Technologies representative.

Correcting shipping errors

1. Red-tag all def ective equ ipment and over-shipped equipment and return according to the nearest Material Stocking Location (MSL) instructions. For international customers, contact your order service agent.

2. Direct all short-shipped reports to the nearest MSL. Contact the appropriate location for specific instructions. For Streamlined Implementation in the United States, call 1-800-772-5409.

Unpack and inspect

READ THIS FIRST!

CAUTION:

A fully loaded system weighs approximately 48 lbs (22 kg). Use lifting precautions.

1. Verify the equipment re ceived. See Figure 1-1. Actual equipment may vary in appearance and may ship in separate packages.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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2. Refer to Tab le 1-1 through Tabl e 1 -7 for a list of Survivable Remote Processor (SRP) and Expansion Port Network (EPN) parts and comcodes.

AUX

S.R.

SWITCH

EPNB EPNAPPN B PPN A

TX TX TX

RX RX RX RX

DCE TERM

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1-2Unpack and inspect

Figure Notes

1. SRP cabinet (rear view)

2. Fiber optic cables (2 sets for standard/high reliability and 4 sets for critical reliability)

3. Translation card

qrdfsrep RPY 021798

4. B25A 25-pair (Group 300) cable

5. RS-232 cable

6. S.R. switch to EI 14-inch (35.5 cm) Y cable

Figure 1-1. Equipment packed with the SRP cabinet (circuit packs not shown)

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Table 1-1. Basic SRP parts list

Comcode Description Quantity

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1-3Unpack and inspect

J58890L-2

SRP cabinet 1

List 30 108136474 TN2301 survivable remote switch circuit pack 1 108230624 TN570C expansion interface circuit pack 1 103557476 TN794 Network Control/Packet Control

Assembly 103557435 TN790B processor circuit pack 1 107784019 TN2182B tone clock-tone detector and call

classifier circuit pack 848101440 S.R. switch to EI 14-inch (35.5 cm) Y cable 1

---------------- RS-232 cable - connects between the SRP

cabinet and the management terminal 105455109 Large retainer clips to hold the transceivers to

the rear of the EPN (upgrades only)

1 for standard/high reliability

2 for critical reliability

Table 1-2. Optional SRP parts list

Comcode Description Quantity

106689516 TN771D maintenance/test circuit pack

(used only when packet bus is activated)

103557187 TN765 processor interface circuit pack 1

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Table 1-3. Required EPN parts list

Comcode Description Quantity

106696081 TN570C expansion interface circuit pack 1 105533756 TN1654 DS1CONV circuit pack 1

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1-4Unpack and inspect

108187170 TN775C maintenance circuit pack (Needed

if one is not already there)

Table 1-4. Optional EPN parts list

Comcode Description Quantity

107089922 TN750C announcement circuit pack

1. Announcements can only be saved to the TN750 C flash mem ory and announcements should not be saved to the SRP translations.

Table 1-5. Required Release 7r parts list

Comcode Description Quantity

105533756 TN1654 DS1CONV circuit pack

(Needed if

using DS1 instead of fiber)

107737934 TN573B SNI circuit pack

847245750

14-inch (35.5 cm) Y cable

847245768

1. Replaces the TN574 circuit pack.

2. Needed if the TN574 circuit pack is replaced with the TN1654 circuit pack.

70-inch (177.8 cm) Y cable

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Table 1-6. Parts list for DS1CONV configurations

Comcode Description Quantity

106455348 9823A fiber optic transceiver 2 for

847245776 DS1CONV Y cable 1 for

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1-5Unpack and inspect

standard/high reliability

4 for critical reliability

standard/high reliability

2 for critical reliability

407439975 multi-mode

407598358

50-foot (15.2 m) fiber optic cable connects between the SRP cabinet and an EPN

single mode

846301075 50-foot (15.2 m) B25A 25-pair

(Group 300) cable

2 for standard/high reliability

4 for critical reliability

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Table 1-7. Parts list for direct fiber configurations

Comcode Description Quantity

106455348 9823A fiber optic transceiver 1 for

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1-6Unpack and inspect

standard /high reliability

2 for critical reliability

106455363 9823B fiber optic transceiver (if

multi-mode fiber is longer than 4900 feet (1493.5 m))

107731853 300A fiber optic tra ns ceiver (if single

mode fiber installation)

104266523 multi-mode

407598358

50-foot (15.2 m) fiber optic cable connects between the SRP cabinet and an EPN

single mode

846301075 50-foot (15.2 m) B25A 25-pair

(Group 300) cable

1 for standard/high reliability

2 for critical reliability

1 for standard/high reliability

2 for critical reliability

2 for standard/high reliability

4 for critical reliability

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Install the SRP cabinet

1. Place the SRP cabinet on the floor or on top of the other Single-Carrier Cabinets (SCC). The maximum number of stackable cabinets is 4.

NOTE:

The expansion port network (EPN) appears in this document as either a Multi-Carrier Cabinet (MCC) or SCC.

Connect cabinet ground

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1-7Install the SRP cabinet

For cabinet installation, power, and ground information, refer to

Enterprise Communications Server Release 7 Installation and Test for Single-Carrier Cabinets

source.

Install rear panels

1. Install the rear panels and loosely thread each screw. See Figure 1-2.

2. For For a

remain loose. These screws are tightened when the ground plates are installed.

unstacked

stac k

of cabinets, allow the screws (Figure Note 4 in Figure 1-2) to

DEFINITY

, 555-230-894. The SRP needs a dedicated power

cabinets, tighten the screws securely.

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1-8Install the SRP cabinet

Figure Notes

1. Cabinet in A position (No ground plate is installed on an unstacked cabinet)

2. Rear ground plate (Attached between stacked cabinets)

4 4

grnd_plt CJL 030696

3. Cabinet in B position

4. Screws to loosen

Figure 1-2. Rear panel screw locations

Install ground plates

Ground plates are installed between stacked cabinets, provide the ground connection between cabinets, provide radio frequency (RF) radiation protection, and help stabilize the cabinets.

Install rear ground plates (Systems with earthquake protection)

1. Loosen the four screws at the bottom of the top cabinet and at the top of the cabinet underneath the top cabinet. See Figure 1-2

2. Align the mounting holes in the rear ground plate over the bottom screws in the top cabinet. See Figur e 1-3

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3. Align the mounting holes in the ground plate with the four holes at the top of the cabinet below the top cabinet. Slide the mounting plate down to seat on the screws.

4. Do not tighten the screws yet.

Install front ground plates (Systems with radiation shielding and earthquake protection)

Use the front ground plate instead of the cabinet clip to attach the cabinets to each other. Use one front ground plate between two

1. At the front of the cabinets, align the holes in the top of the front ground plate with the holes at the bottom of the upper cabinet, and insert the four screws. Do not tighten the screws yet. See Figure 1-3

2. At the front of the cabinets, align the holes in the bottom of the front ground plate with the holes at the top of the lower cabinet. Insert the four supplied #12-24 x 1/2-inch (1.27 cm) thread-forming screws.

3. Tighten all screws securely.

stacked

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1-9Install the SRP cabinet

cabinets.

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1-10Install the SRP cabinet

scdfgrpl KLC 011799

Figure Notes

1. Front ground plate or cabinet clip 2. Rear ground plate

Figure 1-3. Rear ground plate and front plate or cabinet clip — side view

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Install cabinet clips (Systems without earthquake protection)

A cabinet clip is required between each pair of stacked cabinets. At the front of the cabinets, install a cabinet clip between each pair of cabinets

by hooking the clip into the slot of the upper cabinet and snapping the straight leg of the clip into the slot on the lower cabinet. See Figure 1-4

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1-11Install the SRP cabinet

Figure Notes

1. Control Cabinet

2. Port Cabinet or Duplicated Control Cabinet

3. Port Cabinet

Figure 1-4. Location of Cabinet Clips

4. SRP Cabinet

5. Cabinet Clips

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Connect cables to the SRP

The TN2301 survivable remote switch circuit pack is located in slot 7 of the SRP cabinet. Fiber optic transceivers are attached to the TN2301 circuit pack. Fiber cables are connected from these transceivers to the TX and RX connectors on the rear of the cabinet.

NOTE:

Always connect a fiber cable from a TX connector to an RX connector and vice versa.

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1-12Connect cables to the SRP

Do not connect the cables to the EPN until you reach the ‘‘

circuit packs and make cable connections’’ section.

Depending on the customer’s configuration, refer to one of the following sections for connecting fiber cables to the SRP:

■ Connect SRP fiber cables for standard/high reliability

■ Connect SRP fiber cables for critical reliability

Connect SRP fiber cables for standard/high reliability

1. Connect the equipment as shown in Figur e 1-5.

2. Go to the ‘‘

Connect the SRP and management terminal’’ section.

Connect SRP fiber cables for critical reliability

1. Connect the equipment as shown in .

2. Go to the ‘‘

Connect the SRP and management terminal’’ section.

Replace EPN

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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EPN B EPN APPN B PPN A

TX TX TX

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1-13Connect cables to the SRP

RX RX RX RX

cydfsdsa RPY 030998

Figure Notes

1. To EPN A

2. To Port Network Connectivity (PNC) A

3. Fiber optic cable

4. SRP cabinet

5. B25A 25-pair cable

6. Main Distribution Frame (MDF)

Figure 1-5. SRP fiber cables for standard/high reliability

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1-14Connect cables to the SRP

EPN B EPN APPN B PPN A

TX TX TX

RX RX RX RX

Figure Notes

1. To EPN B

2. To EPN A

3. To Port Network Connectivity (PNC) B

4. To Port Network Connectivity (PNC) A

5. Fiber op tic cable

6. SRP cabinet

7. B25A 25-pair cable

8. Main Distribution Frame (MDF)

Figure 1-6. SRP fiber cables for critical reliability

cydfaepn RPY 030998

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Connect the SRP and management terminal

1. See Figure 1-7 for SRP and management terminal connections.

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1-15Connect the SRP and management terminal

AUX

S.R.

SWITCH

EPN B EPN APPN B PPN A

TX TX TX

RX RX RX RX

DCE TERM

scdfsre2 RPY 030398

Figure Notes

1. 14-inch (35.5 cm) Y cable

2. B25A 25-pair cable

3. To Main Distribution Frame (MDF)

4. RS-232 cable

5. RS-232 null modem cable (to COM2 connector on management terminal)

6. 715 BCS-2 management terminal

7. SRP cabinet

Figure 1-7. SRP and management terminal connections

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MDF connections

1. Punch down the following wires at the MDF. See Table 1-8.

Table 1-8. 110 block cross-connect pins

SRP Aux EPN Aux

Cross-

Connect

Color

Number

G-V 46 3 W-O

SRP Aux SRP Switch

Cross-

Connect

Color

Number

Cross-

Connect

Number Color

Cross-

Connect

Number Color

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1-16MDF connections

W-O 3 46 G-V

V-G 45 23 BK-O

EPN Aux SRP Switch

Color

Cross-

Connect

Number

Cross-

Connect

Number Color

O-W 4 24 O-BK W-G 5 47 V-BR

W-BR 7 48 BR-V

V-BL 41 41 V-BL BL-V 42 42 BL-V

V-G 45 43 V-O G-V 46 44 O-V

1. The following wire colors apply to this table: W = White, BL = Blue, O = Orange, G = Green,

BR = Brown, BK = Black, V = Violet

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Power up the SRP

1. Set the TN2301 switch to the Restore (RSTR) position during the administration to prevent the cabinet from going into the survive mode.

2. At the rear of the SRP, set the circuit breaker to ON. Th is starts the system initialization and test.

Administer the Release 7r and SRP

CAUTION:

Do not save announcements to the SRP translation card.

NOTE:

Administering the SRP may take several hours.

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1-17Power up the SRP

NOTE:

This documentation assumes that the Release 7r management terminal and the SRP management terminal are located in the same room. If this is not the case, make the appropriate provisions.

NOTE:

An “init” login is required to perform the following. Contact the regional CSA (Customer Software Associate) to assign the Offer Category option. Maintenance capabilities to initialize the system and access to either an internal or external modem are the only command options available until the Offer Category option is set.

NOTE:

Not all administration should be copied directly (Example: coverage paths, abbreviated dial lis ts, and bridged appearan ces). These administration items may not be valid if the SRP goes into survival mode.

NOTE:

The following are examples of the types of administration that need to be added to the SRP. Since configurations and administration varies for every switch, it is not possible to list all of the administration that is needed for your SRP.

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Administration of the Release 7r

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1. Type

display system-parameters maintenance

the product ID for later use.

2. Choose an option and enter the command on the Release 7r management terminal:

■ If changing an existing EPN to an SREPN, type

number

< press

■ If adding a new EPN as an S REPN, type

gives you the next available number).

3. In the

4. In the

Survivable Remote EPN? Survivable Remote Processor ID

the SRP. The product ID is located on the display system-parameters maintenance screen on the SRP management terminal.

5. Press

Enter.

Administration of the SRP

The first step is to administer the hardware. The next step is to administer the software. Finally, administer any individual features.

and press Enter. Record

change cabinet

> (number is the cabinet number of the SREPN) and

Enter.

add cabinet <next

field, type y.

field, add the product ID of

> (next

Administering the hardware

1. On the Release 7r management terminal, type Identify the port network of the SREPN. See Figure 1-8

list cabinet SPE B

CABINET REPORT

No. Type Layout Room Floor Building A B C D E 1 PPN 5-car CS_1 1 ABC_DE PN 01 PN 01 PN 01 SN 01 SN 01 2 EPN 5-car CS_1 1 ABC_DE PN 04 PN 04 PN 04 PN 16 PN 16 3 sEPN 5-car CS_1 1 ABC_DE PN 05 PN 05 PN 05 SN 44 SN 44 4 EPN 5-car B-32 B VWX_YZ PN 06 PN 06 PN 06 SN 07 SN 07 5 EPN 5-car 2-12 2 MNO_ PQ PN 08 PN 08 PN 08 SN 09 SN 09 6 EPN 5-car E-51 1 VWX_YZ PN 10 PN 10 PN 10 SN 11 SN 11

Figure 1-8. List cabinet screen

list cabinet

and press Enter.

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1-19Administer the Release 7r and SRP

2. Display the hardware in the SREPN by typing

number

> (the port network number of the SREPN) and pressing

NOTE:

The port network numbers differ between the Release 7r and the SRP. On the Release 7r management terminal, the port network that you may be displaying is 5; whereas, on the SRP management terminal, the port network that you are adding circuit packs to is always 2.

3. On the SRP management terminal, type press

Enter. All the circuit packs displayed on the Release 7r management

terminal that are not Release 7r specific (such as packet gateways or DS1CONV) must be added to the SRP. Be sure to add circuit packs to all nec es sa ry car riers.

NOTE:

Save often the information you add to the SRP management terminal.

4. Press

Enter.

Administering the software

1. Set the customer options on the SRP to closely match the Release 7r options.

display circuit-packs

change circuit-packs 2

Enter.

and

Identify and add trunk information

Administration for each of the circuit packs in the SREPN needs to be added to the SRP. For every trunk circuit pack, the trunk administration must be added and for every port on every line circuit pack, the station administration must be added.

1. On the Release 7r management terminal, type

port-network <number

Enter. Identify the slot numbers of the trunk circuit packs.

> (number of the SREPN port network) and press

2. For each trunk circuit pack on the Release 7r management terminal, type

display port <CCSS01

> (where CCSS01 is the circuit pack and port location of the first port on the trunk circuit pack) and press Information screen appears. The

Identification:

trunk group and member information for that port. (For example, 98/1 means that this port is member 1 of trunk group 98.)

3. Type

4. On the SR P management terminal, type

display trunk-group <number

member) and press

press

Enter.

> (number is the trunk group

add trunk-group <number

list configuration

Enter. The Port

field shows the

> a nd

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5. Add all of the trunk group information (displayed on the Release 7r management terminal) to the SRP management terminal.

NOTE:

6. The Member Assignments screen on the Release 7r management terminal appears. Note the number of the members in the trunk group.

Are all the ports for that trunk circuit pack members of that trunk?

■ If yes, add the members, press Enter and repeat steps 2-6 for the

next trunk circuit pack.

■ If no, repeat step 2 for all the ports on the trunk circuit pack that are

not accounted for in that trunk group. (For example, if trunk group 98 has only 4 members, which correspond to ports 1 - 4, return to step 2 and type

display port <CCSS05

> and press determine the trunk group for port 5.) Then follow steps 3 and 4 with the new trunk group information.

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1-20Administer the Release 7r and SRP

Enter to

NOTE:

For more information about administering trunks, refer to

DEFINITY

Enterprise Communications Server Release 7 Administration and

7. Type

Feature Description

save translation

and press

Enter.

Identify and add station information

1. On the Release 7r management terminal, type

port-network <number

Enter. Identify the slot numbers of the line circuit packs.

> (number of the SREPN port network) and press

2. For each line circuit pack on the Release 7r management terminal, type

display port <CCSS01

> (where CCSS01 is the circuit pack and port location of the first port on the line circuit pack) and press Information screen appears. The

Identification:

of station and its extension for that port.

3. Type

display station <extension

Enter.

> (extension of the station) and press

NOTE:

The display command depends on the administration of that port -

display station

for stations,

display data

forth.

list configuration

Enter. The Port

field shows the type

for data terminals, and so

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1-21Administer the Release 7r and SRP

4. On the SRP management terminal, type (extension is the same station extension as above) and press

5. Duplicate all of the station information displayed on the Release 7r management terminal to the SRP management terminal.

NOTE:

Remember to add any additional system administration that may be needed. For example, if the station has a coverage path, you need to administer the coverage path. Some of the administration for the station may not work if the SREPN goes into survive mode (such as coverage paths, abbreviated dial lists, and bridged appearances) .

6. Repeat steps 2 - 5 for every port on every line circuit pack in the SRE PN.

NOTE:

For more information about administering stations, refer to

Enterprise Communications Server Release 7 Administration and Feature Description.

7. Type

save translation

Identify and add other circuit packs

For circuit packs other than trunk and line, follow the same guidelines.

and press Enter.

add station <extension

Enter.

DEFINITY

1. Display each port on the circuit pack and the equipment type displayed on the port information screen.

2. Display the equipment on the Release 7r management teminal and add the information to the SRP management terminal.

3. Type

save translation

Administering the system features

NOTE:

Customer options available to the SRP are the same as those available on the existing Release 7r. These are administered by the regional CSA.

Any differences in features from the Release 7r to Release 7si are experienced in the survivable mode. Refer to the Release 7r and Release 7si feature administration descriptions for further details.

System administration needs to be added to the SREPN including dialplan, system features, system maintenance, system security, feature-access-codes, and so forth. Administer in the same manner as listed above.

1. Display the information on the Release 7r management terminal. For example, type

display feature-access-codes

and press

Enter.

and press

Enter.

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2. Add the information to the SRP management terminal. For example, type

change feature-access-codes

and press

Enter.

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1-22Administer the Release 7r and SRP

3. Type

save translation

(optiona l) and press

Administering the maintenance parameters

Page 1 of the system-parameters maintenance form contains 2 fields that must be administered for the abbreviated alarm report. Figure 1-9 with the

Number: Abbrev Alarm Report?

avoid unnecessary notification calls.

change system-parameters maintenance Page 1 of 3 SPE A MAINTENANCE-RELATED SYSTEM PARAMETERS OPERATIONS SUPPORT PARAMETERS Product Identification: 1010101010 First OSS Telephone Number: 9~p5380532 Abbrev Alarm Report? y Second OSS Telephone Number: 9~p5380533 Abbrev Alarm Report? y Alarm Origination to OSS Numbers: both Cleared Alarm Notification? y Suspension Threshold: 5 Restart Notification? y Test Remote Access Port? y CPE Alarm Activation Level: none Customer Access to INADS Port? y Repeat Dial Interval (mins): 7 SCHEDULED MAINTENANCE Start Time: 23 : 00 Stop Time: 06 : 00 Daily Maintenance: daily Save Tran slation: daily Control Channel Interchange: daily System Clocks Interchange: daily SPE Interchange: daily

First OSS Telephone Number:

fields that are administered with offsite notification numbers. The

fields associated with these numbers must be set to

1. Set the two

Abbreviated Alarm Report

Enter.

shows the screen

Second OSS Telephone

and

fields to y and press

Enter.

Figure 1-9. Maintenance-related system parameters screen

Administering the sync source

NOTE:

Do not administer a trunk on the SREPN as the synchronization source for the Release 7r. If the system goes into the survive mode, the Release 7r loses its sync source.

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To administer the sync source for the SRP:

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1-23Replace Release 7r circuit pa cks

1. On the SRP management terminal, type press

Enter.

2. Enter a DS1 trunk circuit pack on the SRP as the primary sync source.

3. Press

Enter.

NOTE:

When the system is in the survive mode, the synchronization of the SRP comes from the DS1 trunk circuit pack. When the system is in the normal mode, the synchronization of the SRP r everts back to the tone clock and causes a sync alarm in the alarm logs of the SRP.

4. When all administration is completed on the SRP, type and press

Enter.

5. Return the TN2301 switch to the AUTO position.

Replace Release 7r circuit packs

If the Release 7r has the TN574 DS1CONV circuit pack:

1. Replace the TN574 DS1CONV circuit pack with the TN1654 DS1CONV circuit pack.

2. If you have a TN573 SNI circuit pack, replace it with a TN573B SNI circuit pack.

change synchronization

save translation

and

Replace EPN circuit packs and make cable connections

1. Power down the EPN.

2. If this is a previously installed EPN, then remove the DS 1CONV to EI cable.

3. Install the TN775C maintenance circuit pack.

4. Install the TN570C expansion interface circuit pack.

5. Replace the TN574 circuit pack with the TN1654 DS1CONV circuit pack.

6. Depending on the customer’s configuration, refer to one of the following

sections:

■ ‘‘Connect DS1CONV cables for standard/high reliability’’

■ ‘‘Connect DS1CONV cables for critical reliability’’

■ ‘‘Connect direct fiber cables for standard/high reliability’’

■ ‘‘Connect direct fiber cables for critical reliability’’

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Connect DS1CONV cables for standard/high reliability

1. Connect the equipment as shown in Figure 1-10.

2. Power up the EPN.

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1-24Replace EPN circuit packs and make cable connections

3. Go to the ‘‘

Test the SRP’’ section.

Connect DS1CONV cables for critical reliability

1. Connect the equipment as shown in Figure 1-11.

2. Power up the EPN.

3. Go to the ‘‘

Test the SRP’’ section.

Connect direct fiber cables for standard/high reliability

1. Connect the equipment as shown in Figure 1-12.

2. Power up the EPN.

3. Go to the ‘‘

Test the SRP’’ section.

Connect direct fiber cables for critical reliability

1. Connect the equipment as shown in Figure 1-13.

2. Power up the EPN.

3. Go to the ‘‘

Test the SRP’’ section.

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1-25Replace EPN circuit packs and make cable connections

cydf1sds RPY 030998

Figure Notes

1. MCC cabinet

2. EP N carrier A

3. DS1 cab l e from Port Network Connectivity (PNC) A link

4. DS 1C ONV 2-foot (60.96 cm) Y cable (Tie wrap the cable to the cabinet.)

5. 9823A transceiver

6. 9823A transceiver on the EI connector

7. B25A 25-pair cable

8. Main Distribution Frame (MDF)

9. Fiber op tic c ables

10. From the EPN A TX and RX connectors on the rear of the SRP

11. From the PPN A TX and RX connectors on the rear of the SRP

Figure 1-10. EPN DS1CONV standard/high reliability cable connections

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1-26Replace EPN circuit packs and make cable connections

cydfhdsa RPY 030698

Figure Notes

1. MCC cabinet

2. EP N carrier B

3. EP N carrier A

4. DS1 cables from Port Network Connectivity (PNC) A and B links

5. DS 1C ONV 2-foot (60.96 cm) Y cable (Tie wrap the cable to the cabinet.)

6. 9823A transceiver

7. 9823A transceiver on the EI connector

8. B25A 25-pair cable

9. Fiber op tic c ables

10. From the EPN B TX and RX connectors on the rear of the SRP

11. Main Distribution Frame (MDF)

12. From the EPN A TX and RX connectors on the rear of the SRP

13. From the PPN A TX and RX connectors on the rear of the SRP

14. From the PPN B TX and RX connectors on the rear of the SRP

Figure 1-11. EPN DS1CONV critical reliability cable connections

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1-27Replace EPN circuit packs and make cable connections

cydf1epn RPY 030998

Figure Notes

1. SCC cab inet

2. 9823A transceiver on the EI connector

3. B25A 25-pair cable

4. Main Distribution Frame (MDF)

5. Fiber op tic cable

6. From the EPN A TX and RX connectors on the rear of the SRP cabinet

Figure 1-12. EPN Direct fiber standard/high reliability cable connections

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1-28Replace EPN circuit packs and make cable connections

Figure Notes

cydfhep2 RPY 030998

1. MCC cabinet

2. EP N carrier B

3. EP N carrier A

4. 9823A transceiver on the EI connector

5. Fiber optic cables

6. From the EPN B TX and RX connectors on the rear of the SRP

7. Main Distribution Frame (MDF)

8. B25A 25-pair cable

9. From the EPN A TX and RX connectors on the rear of the SRP

Figure 1-13. EPN Direct fiber critical reliability cable connections

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Test the SRP

1. After the SRP is fully administered and the TN2301 switch (Figure 1-14) is in the AUTO position, you are ready to test the SRP.

BKUP

DATA

AUTO

RSTR AUTO TEST

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1-29Test the SRP

SURVIVE

MODE ON

ckdf02fo RPY 022398

Figure 1-14. TN2301 faceplate switch and LEDs

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Test the survive mode function

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1-30Test the SRP

1. Type

list cabinet

and press Enter on the R7r management terminal.

Determine which EPN is “watched” by Survivable Remote equipment by looking for the lower-case “s” before the letters “EPN” in the shown in Figure 1-15

. There may be more than 1 EPN designated as

Type

field as

Survivable.

list cabinet SPE B

CABINET REPORT

No. Type Layout Room Floor Building A B C D E 1 PPN 5-car CS_1 1 ABC_DE PN 01 PN 01 PN 01 SN 01 SN 01 2 sEPN 5-car CS_1 1 ABC_DE PN 04 PN 04 PN 04 PN 16 PN 16 3 EPN 5-car CS_1 1 ABC_ DE PN 05 PN 05 PN 05 SN 44 SN 44 4 EPN 5-car B-32 B VWX_YZ PN 06 PN 06 PN 06 SN 07 SN 07 5 EPN 5-car 2-12 2 MNO_ PQ PN 08 PN 08 PN 08 SN 09 SN 09 6 EPN 5-car E-51 1 VWX_YZ PN 10 PN 10 PN 10 SN 11 SN 11

Figure 1-15. List cabinet screen

2. Type

status health

and press

terminal. The status of the SREPN should be “up.” See Figure 1-16

Enter on the Release 7r management

status health SPE A

PNC: A-PNC/auto B-PNC/functional ALARMS: Maj: 2 Min: 2 Wrn: 104 Pwr: comm Sync:loc l Logins:2 BUSYOUT: Trk 0 Stn: 0 Oth: 18 Cab EmTr Mj Mn Wn PNC Cab EmTr Mj Mn Wn PNC Cab EmTr Mj Mn Wn PNC 1 auto- 0| 0|47 up 2 auto- 0| 0|12 up

Figure 1-16. Status health screen (Release 7r)

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Installation

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1-31Test the SRP

3. Type

status health ALARM SUMMARY CABINET STATUS Major: 1 Emerg Alarms Minor: 0 Cab Trans Mj Mn Wn PNC Warning: 10 1 auto- 0| 0| 5 up BUSY-OUT SUMMARY 2 auto- 1| 0| 0 dn Trunks: 0 3 n.a. 0| 0| 0 dn Stations: 0 Others: 0 PROCESSOR OCCUPANCY STATUS Static: 1% SM: 4% CP: 0% Idle: 95% CRITICAL SYSTEM STATUS Active SPE: A/auto Duplicated? SPE:n SPE Power: commercial Time Source: local # Logins: 1

status health

and press Enter on the SRP management terminal. The

status of the SREPN should be “down.” See Figure 1-17

Figure 1-17. Status health screen (SRP)

4. Place a voice call from a telephone on the Release 7r PPN to a telephone on the SREPN and verify the talk path.

5. Physically disconnect all PNC A and B fiber cables from the connectors on the rear of the SRP cabinet. Take care not to mix up or contaminate the fibers. After about a minute, the red emergency transfer LED on TN775C maintenance circuit pack turns on.

6. Verify that the red SURVIVE MODE ON LED on the TN2301 turns on in approximately 2 minutes. The SREPN performs a cold reset and functions again under the control of the SRP, although it may take longer for some facilities (such as trunks) to be fully restored.

If the SURVIVE MODE ON LED does not turn on, refer to ‘‘

Testing the

TN2301 function and wiring’’ in Chapter 2, ‘‘SREPN Maintenance’’.

7. Type

status health

and press

Enter on the Release 7r management

terminal. The status of the SREPN should be “dn” or “fe” (far end).

8. Type

status health

and press

Enter on the SRP management terminal. The

status of the SRP should be “up.”

9. Place a voice call between two telephones on the EPN and verify the talk path.

10. Reconnect all PNC A and B fiber cables to the rear of the SRP cabinet.

11. Move the TN2301 switch to the restore (RSTR) position. The SURVIVE MODE ON LED immediately turns off.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Installation

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12. Move the TN2301 switch to the AUTO position.

13. Verify that the SREPN is back in service on the Release 7r within 1-2 minutes.

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1-32Test the SRP

14. Type

status health

terminal. The status of the SREPN should be “up.”

15. Type

status health

status of the SREPN should be “down.”

Verify the test switch operation

1. Type

2. Type

3. Resolve any FIBER-LK, SNI-BD, EXP-INTF, and DS1-CONV errors. Refer

4. Place the TN2301 switch to the TEST position.

5. Verify that the SURVIVE MODE ON LED on TN2301 turns on immediately.

6. Type

7. Type

display alarms

while in the normal mode.

pnc

in the

to the

DEFINITY ECS R7 Maintenance for R7r

Within 2 minutes, the SREPN performs a cold reset and functions again under the control of the SR P, although it may take longer for some facilities (such as trunks) to be fully restored.

status health

terminal. The status of the SREPN should be “dn” or “fe” (far end).

status health

status of the SRP should be “up.”

and press

Enter on the Release 7r management

Enter on the SRP management terminal. The

and press Enter on the R7r management terminal

Category

field and press

Enter.

, 555-230-126.

and press

Enter on the Release 7r management

Enter on the SRP management terminal. The

8. Type

9. Type

display errors pnc

in the

Category

and press

field and press

Enter on the R7r management terminal.

Enter. Note the errors

associated with the SREPN or its connections. These errors appear when the link to the SREPN is good and you are in the survive mode.

10. Place a voice call between two telephones on the SREPN and verify the talk path.

11. Place the TN2301 switch to the AUTO position. The SURVIVE MODE ON LED immediately turns off.

12. Verify that the SREPN is back in service on the Release 7r within 1-2 minutes.

13. Type

status health

and press

Enter on the Release 7r management

terminal. The status of the SREPN should be “up.”

14. Type

status health

and press

Enter on the SRP management terminal. The

status of the SREPN should be “down.”

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Installation

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Verify the SRP status

1. Verify that the TN2301 switch is in the AUTO position and the green AUTO LED is on.

2. Verify that the red BKUP LED on the TN2301 is off.

3. Verify that the red SURVIVE MODE ON LED is off.

4. Verify that the yellow DATA LED is on.

5. Verify that the green LED on the EPN TN775C maintenance circuit pack is double flashing. This indicates that EPN can go into the survive mode if needed.

Upgrade the SRP

1. Chec k the link status between the G3r PPN and the associate d SREPN. The link must be up and functioning before you can upgrade. If the system is in "survive mode," resolve the alarms and return the link to service before proceeding with the upgrade.

Issue 2

June 1999

1-33Upgrade the SRP

2. Continue the upgrade by referring to

DEFINITY Enterprise

Communications Server Release 7 Upgrades and Additions for R7si.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Installation

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1-34Upgrade the SRP

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SREPN Maintenance

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SREPN Maintenance

Before starting to troubleshoot

Issue 2

June 1999

2-1Before starting to troubleshoot

NOTE:

When the SRP is in Normal mode, the Expansion Interface circuit pack’s yellow LED flashes (see Table 2-6 counterpart in the R7r goes into Survive mode.

Similarly, after normal service is returned to the SREPN, the SRP is in an

alarmed state. Th is is no rmal for th e SRP

disconnected from the SREPN, and the SRP is no longer in control. EXP-INTF errors and alarms and failures of Tests #237 and #238 are also normal.

For more information about these conditions see ‘‘

Servicing the Survivable Remote EPN (SREPN) equipment involves both the Release 7r and the R7si processors. Therefore, you may need to to refer to these maintenance manuals:

■

DEFINITY ECS Release 7 — Maintenance for R7r

■

DEFINITY ECS Release 7 — Maintenance for R7si

SREPN connections

■ The EPN can be remoted over fiber optic cables through

Switch Node Interface (SNI) and Expansion Interface (EI) circuit packs

This is normal

are

down and are not re-established until the SRP

and indicates that the TN2301 has

. The links to its

Post-reset check’’.

, 555-230-126

, 555-233-105

■ DS1-CONV facilities

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Figure 2-1 shows an example of the essential hardware connections for the Survivable Remote EPN over DS1-CONV facilities.

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2-2SREPN connections

cydfsrs2 KLC 010899

TN2301

C D

Collocated equipment

1 C

Figure Notes:

1. Release 7r

2. Release 7si processor complex

3. Survivable Remote process or (SRP)

4. Survivable Remote EPN (SREPN )

Figure 2-1. Survivable Remote EPN hardware connections

over DS1-CONV facilities

CAUTION:

Only the TN1654 DS1 CONV circuit pack can be used for DS1-CONV-remoted SREPN systems.

The “M” in Figure 2-1 indicates the TN775C Maintenance circuit pack that monitors the status of the fiber link between the Release 7r and the SREPN.

Figure 2-2

shows the front of the SRP cabinet, typical circuit packs installed, and

the position of the TN2301 SRSwitch circuit pack.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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2-3SREPN connections

1 2

PROCR MAINT

PROCR INTFC1

CONT

PACKET

CONT

TONE

CLOCK

EXPN INTFC

NET

Figure Notes:

1. Processor (TN790B)

2. )Processor interface (TN765)

3. Network/Packet Control (TN794) or Network control (TN777B - Release 6 and earlier)

4. Packet control (TN778 - Release 6 and earlier)

SRSwitch

5. Tone/Clock (TN2182)

6. Expansion interface (TN570C)

7. SRSwitch (TN2301)

8. Maintenance/Test (TN771D)

9. Power supply

POWER SUPPLY

ckdfsrpn KLC 022399

Figure 2-2. Front view - SRP cabinet

Required and optional circuit packs

Survivable Remote Processor (SRP)

Table 2-1 lists the required and optional circuit packs in the SRP:

Table 2-1. Required and optional circuit packs - SRP

Required Optional

Circuit pack Description

TN790B Processor TN765 Processor Interface Used for PRI applications TN794 Network/Packet

control

Circuit pack Description Comments

TN1654 DS1-CONV Only used when remoting

through DS1 facilities

Continued on next page

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

Table 2-1. Required and optional circuit packs - SRP — Continued

Required Optional

Circuit pack Description

TN2182B Tone/Clock TN771D Maintenance/Test Used only when packet bus is

TN2301 SRSwitch TN1654 DS1-CONV Only used when remoting

TN570C Expansion

interface

Circuit pack Description Comments

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June 1999

activated

through DS1 facilities

Continued on next page

Survivable Remote EPN

Issue 2

2-4SREPN connections

Table 2-2 lists the required and optional circuit packs in the SREPN:

Table 2-2. Required and optional circuit packs - SRP

Required Optional

Circuit pack Description Comments

TN570C Expansion

Interface

TN775C Maintenance Monitors link

Always used in an EPN

connection to PPN

Circuit pack Description Comments

TN750C Announcement Do not save the

Interfacing circuit packs

The Survivable Remote equipment can operate through:

■ ‘‘Expansion Interface connections’’

announcements to the SRP translation card.

Continued on next page

■ ‘‘DS1 CONV connections’’

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Expansion Interface connections

■ TN570C Expansion Interface (EI) circuit packs use either the 9823A

(multimode) or the 300A (single mode) transceivers.

NOTE:

A new SREPN system includes the TN570C EI circuit pack. Earlier E I circuit packs (for example, TN570B) are not supported.

DS1 CONV connections

■ TN1654 DS1 Converter supports T1/E1 remoting and wideband

applications.

■ Standard and High Reliability systems use pairs of TN1654, not mixed with

the earlier TN574.

■ Critical Reliability systems require TN1654 circuit packs on the duplicate

pair.

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2-5SREPN connections

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SREPN Maintenance

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Transfer sequence to Survive mode

Transfer from Normal to Survive mode is automatic and is controlled by the TN775C Maintenance board. Figure 2-3 within the TN2301 circuit pack.

shows a schematic of the link switching

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2-6SREPN connections

TN2301

AA B

Figure Notes:

1. Release 7r

2. Survivable Remote EPN (SREPN)

Figure 2-3. TN2301 link switching schematic

The transfer sequence to Survive mode is:

1. Links from the Release 7r PPN to one of its configured SREPNs fail.

2. The TN775C Maintenance circuit pack (A-carrier SREPN) detects the link failure and signals the TN2301 to disconnect its links to the Release 7r and connect the SREPN Expansion Interface.

3. The TN790B Survivable Remote processor (SRP) takes over control of the EPN in Survive mode on Link A. Link B is left open while the S RP is in control of the SREPN.

cydfsrp2 KLC 022499

3. SRSwitch (TN2301)

4. Survivable Remote processor (R7si)

NOTE:

In Survive mode, the SRSwitch (TN2301) puts the EI/SNI circuit pack in the Release 7r into loopback mode.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Table 2-3 shows the sequence of events to transfer to the Survive mode, the

approximate times for each event, and the service affected at each stage.

Table 2-3. Transfer sequence to Survivable Remote mode

If the link between the Release 7r and an EPN is down for Then Service affected

Issue 2

June 1999

2-7SREPN connections

1 minute Emergency Transfer Mode activated. 2-3 minutes System “waits” to determine whether the

Release 7r is going through a reset 3.

3 minutes Survive mode activated for each SREPN.

5-6 minutes Transfer sequence completed; EPN service

restored.

1. Similar to Emergency Transfer mode, only established, intra-EPN calls are preserved. No new or originating calls can be made.

2. Transfer to Survive mode includes a cold restart of the SREPN.

3. Calls using the link back to the Release 7r are not possible.

Only established calls preserved.

Established calls terminated (restart)

Intra-EPN calls possible

TN2301 (SRSwitch)

The SRSwitch circuit pack (TN2301) occupies 6 slots in the SRP cabinet. Figure

2-4 shows the faceplate switch and LEDs for the TN2301 circuit pack.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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BKUP

DATA

AUTO

RSTR AUTO TEST

SURVIVE

MODE ON

ckdf02fo RPY 022398

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2-8SREPN connections

Figure 2-4. TN2301 faceplate switch and LEDs

Faceplate switch

Table 2-4 indicates the 3 positions for the faceplate switch and the use for each.

Table 2-4. Faceplate switch positions and uses

Label Position Use

RSTR Top Forces control to the Release 7r by switching from Survive mode

to Normal mode

AUTO Midd le Ready to go into Survive mode. The switch should be in this

position except during installation, testing, or releasing the SRP from Survive mode.

TEST Bottom For ces control to the S RP (S urvive m ode). Links to the SREPN are

through the SRP (TN790B Processor).

CAUTION:

This is for installation and testing only. Do not leave the switch in this position.

1. This switch position overrides the restore survivable-remote-link command from the SAT terminal. See ‘‘

Restore from remote location’’ later in this chapter for more information.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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SREPN connections

Figure 2-5 shows a detailed view of the rear panel connectors.

S.R.

SWITCH

EPN B EPN APPN B PPNA

TX TX TX

AUX

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2-9SREPN connections

DCE TERM

RX RX RX RX

Figure 2-5. SREPN rear panel - detail

scdfsre4 RPY 022398

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Figure 2-6 shows the hardware connections in the direct fiber system.

SREPN cabinets

B-carrier

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2-10SREPN connections

Transmit (TX)

and receiv e (RX)

cydfsrpn KLC 011199

fiber pair

S.R.

switch

Figure Notes:

1. Fiber transmit (TX) and rec eive (RX) pairs for A and B carriers.

2. SRP AUX B25A 25-pair cable; max. length = 50 ft. (15.25 m):

■ Major SRP power failure alarm lead

■ Remote restore signal leads

3. TN2301 - SRSwitch B25A 25-pa ir cable; max. length = 50’ (15.25 m):

■ -48V from SREPN (through wall

field)

■ SRSwitch -48V major SRP power

failure alarm lead

■ SRSwitch -48V signal leads

Wall field

LGIU

A-carrier

SRP

AUX

Collocated equipment

EIT

N 7 7

System

Access

Terminal

5 C

AUX

4. SREPN AUX connector B25A 25-pair cable; max. length = 50 ft. (15.25 m). Refer to the ‘‘

MDF

connections’’ in Chapter 1:

■ -48V to SRSwitch (through wall field)

■ SRP Alarm

■ SRSwitch sig nal leads

5. Fiber transceivers (9823A)

6. 14-inch (35.5 cm) Y-Cable (Comc ode 847245750)

7. Fiber optic cable pairs

8. Release 7r switch

Figure 2-6. Detailed SRP direct fiber connections

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Figure 2-7 shows the hardware connections in the DS1-CONV system.

SREPN cabinets

B-carrier

CSU

DS1

Wall field

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2-11SREPN connections

D S 1 C

Transmit (TX)

and receiv e (RX)

fiber pair

cydfsrn2 KLC 011199

S N

S.R.

switch

Figure Notes:

1. Fiber transmit (TX) and rec eive (RX) pairs for A and B carriers.

2. SRP AUX B25A 25-pair cable; max. length = 50 ft. (15.25m):

■ Major SRP power failure alarm lead

■ Remote restore signal leads

3. TN2301 - SRSwitch B25A 25-pa ir cable; max. length = 50 ft. (15.25m):

■ -48V from SREPN through wall field

■ SRSwitch -48V power failure alarm

lead

■ SRSwitch signal leads

CSU

A-carrier

SRP

EI AUX

Collocated equipment

System Access

Terminal

4. SREPN AUX connector B25A 25-pair cable; max. length = 50 ft. (15.25m). Refer to the

connections’’ in Chapter 1 :

■ -48V to SRSwitch through wall field

■ SRP Alarm

■ SRSwitch sig nal leads

5. TN1654 (DS1C) can be used only in c om bination with another TN1654.

6. Fiber transceivers (9823A - multimode)

7. 14-inch (35.5 cm) Y-Cable (Comc ode 848101440)

8. Fiber optic cable pairs

9. Release 7r switch

T N 7 7 5 C

AUX

‘‘

MDF

Figure 2-7. Detailed SRP DS1-CONV connections

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Maintenance procedure

Since Survive mode is invoked because of a link failure between the Release 7r and an EPN, the maintenance strategy is to:

1. ‘‘

Check system status’’

2. ‘‘Repair the link connection’’

3. ‘‘Reconnect the Release 7r to the EPN’’

4. ‘‘Post-res et check’’

The final sections of this chapter provide information for resolving

■ ‘‘Power alarms’’

■ ‘‘System resets’’

Check system status

Begin the troubleshooting process by gathering information about the system components.

Issue 2

June 1999

2-12Maintenance procedure

■ ‘‘Circuit pack LEDs’’

■ ‘‘Which EPN is survivable?’’

■ ‘‘EI interactions’’

■ ‘‘Testing the TN2301 function and wiring’’

■ ‘‘Health of Port Network Connections (PNC)’’

■ ‘‘Administered links’’

Circuit pack LEDs

SRSwitch (TN2301) LED interpretation

Table 2-5 lists the conditions indicated by the LEDs on the TN2301 circuit pack.

Table 2-5. TN2301 LED interpretation

LED (color) Condition Interpretation

BKUP - Backup power (red)

DATA (yellow) On steady Data passing through the TN2301 to/from the A-carrier

On steady Backup power (-48v) from the SREPN to the TN2301

has failed.

EI board in the EPN.

Continued on next page

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

Table 2-5. TN2301 LED interpretation — Continued

LED (color) Condition Interpretation

Off If off and no ser v ice-affecting cond itions are present,

AUTO (green) On steady Indicates that the TN2301 faceplate switch is in the

555-233-102

Critical Reliability B-carrier links to the Release 7r are up.

AUTO position. This is normal when in-service.

Issue 2

June 1999

2-13Maintenance procedure

SURVIVE MODE ON (red)

Expansion Interface (TN570C) LED interpretation

The Expansion Interface circuit pack has red, green, and yellow LEDs. The red and green LEDs show the standard conditions:

■ Red indi cates an alarm conditio n

■ Green indicates maintenance testing in progress

The yellow LED is used to provide useful visual status information:

■ Active EI circuit packs:

■ The standby PNC EI circuit packs should have their yellow LEDs off.

On steady Survive mode activated either by the Maintenance

circuit pack control or the faceplate switch is in the T E S T position.

Continued on next page

— Have their yellow LED on solid (for an inter-EPN EI in a

direct-connect system)

— Blink a pattern of 2 seconds on and 200 ms off.

NOTE:

Another way to determine which PNC (and therefore, which EI in a port network) is active and which is standby, use the

status PNC

See Table 2- 6

commands.

for the possible EI yellow LE D states.

status port-network

and

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

555-233-102

Table 2-6. Expansion Interface circuit pack

Yellow LED Flashing States

Condition LED On LED Off

Fiber Out-of-Frame In Frame-No Neighbor Expansion Interface Active Expansion Interface Active Expansion Interface Standby

3 4

0.1 second 0.1 second

0.5 second 0.5 second 2 seconds 0.2 second Solid on Never off

Never on Solid off

Continued on next page

1. This flashing state corresponds to Error Codes 769 and 770 from the Hardware Error Log and ind i cates a failure of Test #238. These error codes are usually accompanied by Error Code 1281 (no Expansion Interface or Swi tch Node Interface detected on opposite end of fiber). This condition may be caused by the absence of the neighbor Expansion Interface or Switch Node Interface circuit pack, a broken or missing fiber, or a missing lightwave transceiver on either endpoint (Expansion Interface or Switch Node Interface cir cuit packs).

Issue 2

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2-14Maintenance procedure

When the SRP is in Survive mode, this flash rate at the Release 7r EI/SNI circuit pack is normal, because the TN2301 puts the fiber into looparound back to the Release 7r.

2. This corresponds to Error Code 1281 from the Hardware Error Log and indicates a failure of Test #237. This condition is usually due to the failure of this E xpansion Interface circuit pack or a failed Expansion Interface or Sw itch Node Interface circuit pack counterpart.

When the SRP is in Normal mode, the Expansion Interface circuit pack’s yellow LE D flashes at this ra te. THIS IS NORMAL. The links to its counterpart in the R7r ARE down and are not re-established until the SRP goes into Survive mode.

3. This is the normal state for an Active EPN Expansion Interface circuit pack that is also the bus master (Expansion Archangel) in the EPN.

4. This is the normal state for an Active Expansion Interface circuit pack that is not the bus master (Expansion Archangel) for an EPN. This applies only in direct-connect configurations where the Expansion Interface circuit pack in an EPN is connected through a fiber link to an Expansion Interface circuit pack in the other EPN. This state also applies for an active Expansion Interface circuit pack located in the PPN.

5. This is the normal state for a standby Expansion Interface circuit pack in the PPN and EPN.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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NOTE:

In an EP N the TN775C EPN Maintenance circuit pack monitors the sanity of the Expansion Interface circuit pack. If the EI circuit pack should cycle between sane and insane several times, the Maintenance circuit pack holds the EI circuit pack reset.

■ If a new Expansion Interface circuit pack is installed in the EP N and

the red LED stays on, remove the EPN Maintenance circuit pack because it may be holding the new EI circuit pack reset.

This can happen when there is a link problem to the EPN, and the EPN restarts several times.

■ Reinstall the maintenance circuit pack after the Expansion Interface

circuit pack is physically inserted and the EI circuit pack’s red LED is off.

Which EPN is survivable?

Issue 2

June 1999

2-15Maintenance procedure

1. At the Release 7r terminal, type the

list cabinet SPE B

CABINET REPORT

No. Type Layout Room Floor Building A B C D E 1 PPN 5-car CS_1 1 ABC_DE PN 01 PN 01 PN 01 PN 01 SN 01 2 sEPN 5-car CS_1 1 ABC_DE PN 02 PN 02 PN 02 PN 02 PN 02

Figure 2-8. List cabinet screen (Release 7r)

2. Once you have located the physical equipment, check to see whether the

EI interactions

list cabinet

command and press Enter. Determine which EPN is “watched” by Survivable Remote equipment by looking for the lower-case “s” before the letters “EPN” in the shown in Figure 2-8

Type

field as

Red SUR V IV E MODE ON LE D is on, indicating that the system is in S urvive Mode.

Although complex to troubleshoot, the following two interactions with EI circuit packs may be present:

■ Alarms logged against an EPN that involve an Expansion Interface circuit

pack acting as the Expansion Archangel

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

■ EI and Tone/Clock synchronization interactions. Synchronization is

555-233-102

involved in the link between two active EI circuit packs or between an active EI circuit pack and an active SNI circuit pack. If the frequency of the

clock is out of the specified range (“out of spec”), an EI fiber link can go down.

— The EI circuit pack reports slip errors if synchronization is not

operating properly.

— Examine the EI circuit packs as a possible cause when diagnosing

synchronization problems.

Issue 2

June 1999

2-16Maintenance procedure

For both topics, refer to the EXP-INTF section in Chapter 9 of

Release 7 — Maintenance for R7r

Testing the TN2301 function and wiring

If the SURVIVE MODE ON LED does not turn on when the PNC A and B links are down, then the TN2301 (SRSwitch) does not detect the SRCntrl and SRCntrlRtn signals (see ‘‘

(TN775C). Possible causes are the

■ Maintenance circuit pack’s relay not closing

■ TN2301 detection circuit malfunctioning

■ Wiring between the SRSwitch (TN2301) and the Maintenance (TN775C)

circuit packs is incorrect.

To verify the detection circuit and wiring:

1. Momentarily short the cross-connect pins 45 and 46 on the EPN Aux wall field. See ‘‘

This should force the TN2301 to switch to Survive mode.

2. If the red SURVIVE MODE ON LED still does not light, verify the wiring.

3. If the wiring is good, replace the TN2301 circuit pack. See ‘‘

TN2301 circui t pack’’.

110 block cross-connect pins’’) from the Maintenance circuit pack

110 block cross-connect pins’’.

DEFINITY ECS

Replacing the

Health of Port Network Connections (PNC)

Depending on the conditions present when the system switched from Normal to Survive mode, it may be in either Emergency Transfer or Survive mode.

To determine the mode in which the system is operating:

1. Get on ov eral l report on each cabinet’s P N C statu s (

the Release 7r and the SRP terminals

screen, and Figure 2-10

shows the SRP screen.

status health

)

at both

. Figure 2-9 shows the Release 7r

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

status health SPE A

555-233-102

Figure 2-9. Status health screen (Release 7r)

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2-17Maintenance procedure

Figure 2-10. Status health screen (SRP)

2. Under the

PNC

field column of the status health screen, read whether the link is up, dn (down), or fe (far-end on Release 7r Center Stage systems) on both systems (bold in both examples) and use Tab le 2 -7 these two questions:

■ Is the link problem on Release 7r or the SREPN side?

■ Is the system in Emergency Transfer or Survive mode?

to answer

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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June 1999

Table 2-7. Release 7r and SRP link status

If the Release 7r link is

And the SRP link is

Then the SRP is in Where to look for problem

Down Up Survive mode Between Release 7r and SREPN Down Down Emergency Transfer mode SREPN side (EI circuit p ack,

transceivers, or fibers)

Up Down Normal mode No problem

Administered links

Issue 2

2-18Maintenance procedure

1. To see how the links are administered, enter

Release 7r and the SRP terminals

. Figure 2-11 (Release 7r) and Figure

list fiber-link

at both the

2-12 (SRP) show examples of both fiber and DS1 CONV links.

list fiber-link Page 1 SPE A FIBER LINK ADMINISTRATION FIBER -------- ENDPOINT 1 -------- -------- ENDPOINT 2 -------LINK# TYPE A-PNC DS1 B-PNC DS1 TYPE A-PNC DS1 B-PNC DS1 DS1 LOC CONV LOC CONV LOC CONV LOC CONV CONV LOC LOC LOC LOC TYPE 1 sni 01E03 01D03 ei 02A01 02B02

2 sni 01E02 01D02 ei 01E01 01D01

3 sni 01E04 01D04 ei 03A01 03B02

4 sni 01E19 01D19 ei 03E01 03D02

5 sni 01E20 01E21 01D20 01D21 ei 04A01 04A02 04B02 04B03 TN574 Primary Facility: A A 9 sni 01E18 02B16 01D18 02C16 ei 09A01 09A02 09B02 09B03 TN1654 Primary Facility:B B B B

Figure 2-11. List fiber-link screen (Release 7r)

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

list fiber-link Page 1 SPE A

FIBER LINK ADMINISTRATION

FIBER -------- ENDPOINT 1 -------- -------- ENDPOINT 2 -------LINK# TYPE A-PNC DS1 B-PNC DS1 TYPE A-PNC DS1 B-PNC DS1 DS1 LOC CONV LOC CONV LOC CONV LOC CONV CONV LOC LOC LOC LOC TYPE

1 sni 01A17 01B17 ei 10E01 10D02

2 sni 01A18 01B18 ei 06E01 06D02

3 sni 01E20 01E21 01D20 01D21 ei 22A01 22A02 22B02 22B03 TN574

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Figure 2-12. List fiber-link screen (SRP)

Issue 2

June 1999

2-19Maintenance procedure

2. Enter

status sys-link UUCSS

to obtain status information and the current or faulted hardware path (the list of hardware components over which the link travels).

status sys-link 01e20 Page 1 of 2 SPE A

Location: 01E2001 Type/Chan: INL Alarms: none Current Path: present Faulted Path: none Last Fault: State: up Current Hardware Path Maintenance Maintenance Location Name Alarms Location Name Alarms 01A1 PKT-INT none PN 01 PKT-BUS none 01E01 EXP-INTF none 2 A-PNC FIBER-LK none 01E02 SNI-BD none 01E20 SNI-BD none

Figure 2-13. Status sys-link screen (Release 7r)

Table 2-8

describes when the current or faulted hardware path displays.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Table 2-8. Current and faulted hardware paths

Issue 2

June 1999

2-20Maintenance procedure

If link is

Current hardware path displays?

Faulted hardware path displays?

Focus attention on path

up Y N current down N Y faulted

For more information on system links and hardware paths, refer to:

■ SYS-LINK Maintenance Object in Chapter 9 of

DEFINITY ECS

Release 7 Maintenance for R7r

■ ‘‘System links’’ on page 2-44

3. Look for alarms on the components listed under the appropriate hardware path. If any alarms are present, follow the maintenance procedures for the alarmed components to clear those alarms first.

4. To help corroborate the information that you have gathered, inspect the Release 7r Alarm and Error logs (Figure 2-14

NOTE:

Since the system is in Survive mode, the Release 7r thinks it has lost its connections to the EPN. Therefore, alarms may be present, even though the problem has been diagnosed and fixed.

display alarms Page 1 of 2 SPE A ALARM REPORT Port Maintenance On Alt Alarm Svc Ack? Date Date Name Brd? Name Type State 1 2 Alarmed Resolved 01E02 SNI-PEER n MAJOR 03/09/00:21 00/00/00:00 01E20 SNI-CONF n MAJOR 03/09/00:26 00/00/00:00 PN02 EXP-PN n MAJOR 03/09/00:30 00/00/00:00 PN02 EXP-PN n MAJOR 03/09/00:30 00/00/00:00 2 A-PNC FIBER-LK n MAJOR 03/09/00:30 00/00/00:00 2 A-PNC FIBER-LK n MAJOR 03/09/00:30 00/00/00:00 2 A-PNC FIBER-LK n MAJOR 03/09/00:30 00/00/00:00

Figure 2-14. Display alarms screen (Release 7r)

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Table 2-9 lists other alarmed Maintenance Objects while in Survive mode.

Table 2-9. Maintenance Objects alarmed in Survive mode

Maintenance Object Description

DS1 CONV-BD DS1 CONV circuit packs EXP-LINK Expansion Link EXP-INTF Expansion Inter face DS1 CONV-BD DS1 CONV circuit packs SNI-BD Switch Node Interface circuit packs

Repair the link connection

After determining on which side (Release 7r or SREPN) the problem lies:

Issue 2

June 1999

2-21Maintenance procedure

1. Test the fiber connection by entering

] if duplicated, [

b-pnc

short | long

test fiber-link

number [a-pnc |

]. Figure 2-15 shows an example of the

test results. For this example, the fiber connection on the Release 7r side is bad.

test fiber-link 2 a-pnc Page 1 SPE A

TEST RESULTS

Port Maintenance Name Alt. Name Test No. Result Error Code

2 A-PNC FIBER-LK 777 FAIL 2 A-PNC FIBER-LK 759 FAIL 135 2 A-PNC FIBER-LK 989 FAIL 241 2 A-PNC FIBER-LK 237 ABORT 2100 2 A-PNC FIBER-LK 238 ABORT 2100

Figure 2-15. Test fiber-link screen (Release 7r)

2. If any of the test results shown in Figure 2-15

a. Busyout the suspected fiber connection with the

number [a-pnc | b-pnc

] if duplicated, command.

fail, isolate the problem:

busyout fiber-link

b. Ensure a reliable fiber connection to the Release 7r. See ‘‘

Fault isolation procedures’’ later in this chapter for a flowchart of steps to

isolate and test fiber connections.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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Issue 2

June 1999

2-22Maintenance procedure

c. Use the

release fiber-link

command to restore the fiber connections.

d. Test the fiber connection again with the

[

a-pnc|b-pnc

e. If all tests on all components PASS, skip to the ‘‘

status’’ section.

3. If necessary, refer to FIBER-LK Maintenance object in Chapter 9 of

DEFINITY ECS Release 7 Maintenance for R7r

Reconnect the Release 7r to the EPN

CAUTION:

Ensure that the links are repaired before proceeding with the next section. See ‘‘

Fault isolation procedures’’ for troubleshooting help.

To reconnect the SREPN to the Release 7r:

1. Set the switch on the TN2301 circuit pack to the RSTR position for at least 1 second and return the switch to the AUTO position.

number [a-pnc | b-pnc

] if duplicated, [

test fiber-link

short | long

for more information.

] if duplicated,

] command.

Check system

number

2. Check for the following LED status:

3. Wait at least 3 minutes while the EPN goes through its cold restart.

4. Chec k the sta tus of the link connections (

Post-reset check

Check to see that the following conditions are met before leaving the customer premises:

1. The EI circuit pack in the SRP should be fast flashing.

From a remote dial-in connection to the SRP, use the

survivable-remote-link

command to reset the SR P . S ee the ‘‘

restore

Restore from

remote locati on’’ section later in this chapter.

■ Red (SURVIVE MODE ON) is off

■ Green (AUTO) is on steady, meaning that the SREPN is ready to

assume processor control for the EPN should another link failure occur.

status health

Release 7r and the SRP terminals

to determine whether the link between

the Release 7r and the EPN is up (Figure 2-9

)

at both the

This is appropriate

for Normal mode

Release 7r. Figure 2-16

, because the links are connected from the SREPN to the

shows the SREPN EI board test results.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

test fiber-link Page 1 SPE A

TEST RESULTS

Port Maintenance Name Alt. Name Test No. Result Error Code

01A01 EXP-INTF 237 FAIL 01A01 EXP-INTF 238 FAIL 01A01 EXP-INTF 240 FAIL 1032 01A01 EXP-INTF 241 ABORT 1033 01A01 EXP-INTF 589 ABORT 1033 01A01 EXP-INTF 316 PASS

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Figure 2-16. Test fiber-link screen (SRP)

These Fail and Abort results are appropriate for Normal mode.

Issue 2

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2-23Maintenance procedure

2. After normal service is returned to the SREPN, the SRP is in an

state

disconnected from the SREPN, and the SRP is no longer in control. Connections are re-established between the EI in the SREPN and its EI/SNI counterpart in the Release 7r PPN, and the system is now in its original Release 7r-EI configuration.

Power alarms

Carrier power failure

A carrier power failure generates a MAJOR alarm against the CARR-P OW Maintenance Object. This condition is evident by:

■ A CARR-POW alarm in the Alarm or Error logs on the R7si system (SRP).

■ The LEDs in the SRP cabinet are all dark except for the yellow LED on the

TN2301 circui t pack.

To troubleshoot this alarm:

1. Refer to the CARR-POW Maintenance Object in Chapter 10 of

ECS Release 7 Maintenance for R7si

alarm.

. This is

normal

alarmed

for the SRP and indicates that the TN2301 has

DEFINITY

for information on resolving this

NOTE:

When power is restored, the system comes up in Normal mode. If the power outage is longer than the holdover time of the EPN battery but shorter than the holdover time for the SRP battery, the R7si system (SRP) can come up in Survive mode.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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-48V backup power to the TN2301 circuit pack

Loss of the -48V backup power from the wall field to the TN2301 generates an alarm (major or minor, depending on administration) against the EXT-DEV (External Device) Maintenance Object. Visually, this condition is evident by the

TN2301’s red BKUP LE D on steady. To troubleshoot this alarm:

Issue 2

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2-24Maintenance procedure

System resets

Resetting the Release 7r with either the commands breaks down and then re-establishes the PPN-to-E P N links during the reset sequence. Since these links may be down longer than 3 minutes, the SREPN maintenance circuit pack (TN775C) signals the TN2301 circuit pack to begin the transfer sequence to Survivable Remote Mode. This sequence is detailed earlier in Tab le 2 - 4

1. Review the ‘‘

MDF connections’’ section in Chapter 1 to familiarize yourself

with the cabling and connections both to and from the cross-connect wall field.

2. Check the connections to the cabinet and wall field before replacing the board. Check for -48V across pins 41 and 42 of the cross-connect field. See ‘‘

110 block cross-connect pins’’ for more information.

3. If power in all cabinets is good, the -48V connections on the circuit pack may be bad. Replace the circuit pack using the procedures outlined in the

‘‘

Replacing the TN2301 circuit pack’’ section.

reset system 4

reset system 5

1. Ensure that the R elease 7r reset sequence is complete before proceeding.

2. Chec k the sta tus of the link connections (

Release 7r and the SRP terminals

to determine whether the link between

the Release 7r and the EPN is up (Ta b le 2-7

status health

)

at both the

3. Test the fiber connections:

a. Enter

test fiber-link

[short | long]

<number> [a-pnc | b-pnc]

if duplicated,

for either fiber or DS1 CONV connections.

b. If the test fails, continue to troubleshoot the connection problem; if it

passes, continue with Step 4.

4. Set the switch on the TN2301 circuit pack to the RSTR position for at least 1 second and return the switch to the AUTO position.

OR From a remote dial-in connection to the SRP, enter

survivable-remote-link

‘‘

Re store from remote location’’ section later in this chapter.

to reset the SRP. For more information see the

restore

NOTE:

After normal service is returned to the SREPN, the SRP is in an

alarmed state

. This is

normal

for the SRP and indicates that the

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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TN2301 has disconnected from the SREPN, and the SRP is no longer in control. Connections have been re-established between the EI in the SREPN and its EI/SNI counterpart in the Release 7r.

Fault isolation procedures

Use the following procedure to isolate faults on a fiber link. This section contains information on:

■ ‘‘Fiber fault isolation’’

■ ‘‘Loopback tests’’

Fiber fault isolation

CAUTION:

On systems with duplicated Port Network Connectivity (PNC), first busyout the standby PNC ( following standby components:

busyout pnc-standby

) before busying out any of the

Issue 2

June 1999

2-25Fault isolation procedures

WARNING:

Calls are dropped when busying out of any of these components on a simplex PNC.

CAUTION:

Be sure to release all busied out components after completing the tests.

To isolate fiber link faults use two procedures:

■ ‘‘Gather information’’

■ ‘‘Test the fiber link hardware’’

Gather information

1. Know which fiber span to isolate by using the link information (

health

information in Ta ble 2-7

■

Fiber-Link (FIBER-LK)

■

Standby Expansion Interface (EXP-INTF)

■

Switch Node Interface (SNI)

■

DS1 Converter (DS1-CONV)

) reports from both the Release 7r and the SREPN and the

status

2. Enter

display alarms

and press

Enter.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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Issue 2

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2-26Fault isolation procedures

3. Type

pnc

in the

Category

field, then choose Enter.

NOTE:

Since the system is in Survive mode, the Release 7r thinks it has lost its connections to the EPN. Therefore, alarms may be present, even though the problem has been diagnosed and fixed.

4. Look for any

on-board

alarms other than the EI circuit pack. If there are any, replace the circuit pack. Do not replace the EI circuit pack unless there are on-board alarms.

If No,

5. Enter

6. Type

display errors

pnc

in the

Category

and press

field, then choose

Enter.

7. Check for any of the following errors:

Maintenance

Object

FIBER-LK Any SNI-BD 513 EXP-INTF 257 769

Error Ty pe

770 1281 1537 3073 3074 3075 3076 3585 3841 3842

8. If you find

9. If you find a. If there is one SNI circuit pack with many different SNI-PEER error

types, replace the indicated SNI circuit pack

b. If there are many SNI-PEER errors of the same error type, replace

the indicted SNI circuit pack using Table 2-10

one or more none

of the errors in Step 7, then resolve any SNI-PEER errors.

of the above errors, go to Step 10.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

Table 2-10. SNI-PEER errors

Error Type SNI slot

12 257 3 513 4 769 5 1025 6 1281 7 1537 8 1793 9 2049 13 2305 14 2561 15

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2-27Fault isolation procedures

2817 16 3073 17 3329 18 3585 19 3841 20

Continued on next page

c. After replacing an SNI circuit pack, clear alarms by executing

board UUCSS long clear

for all alarmed EXP-INTF circuit packs.

test

Wait 5 minutes for any SNI-BD or SNI-PEER alarms to clear.

NOTE:

clear firmware counters

10. Enter

You can speed this process with

a-pnc|b-pnc

[

list fiber-link

to get the physical location of the fiber-link endpoints.

] for the repaired PNC.

11. If a DS1 CONV is administered to the fiber-link (DS1 CONV is y), enter

display fiber-link

to determine the physical location of the DS1 CONV

circuit packs on the fiber-link.

12. Busyout the fiber link (

busyout fiber-link

number

13. Test the fiber link (

test fiber-link

number

long

14. If any tests in the sequence fail, proceed with ‘‘

below.

Test the fiber link hardware’’

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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NOTE:

Test #759 may fail if SNI circuit packs are present.

Issue 2

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2-28Fault isolation procedures

15. If

all

of the tests pass, clear the alarms by executing

long clear

for all alarmed EXP-INTF circuit packs. Wait 5 minutes for any

SNI-BD, SNI-PEER, FIBER-LK, or DS1C-BD alarms to clear.

NOTE:

Test attempted on the EI circuit pack in the SREPN do not run.

NOTE:

clear firmware counters

The that was repaired may be quicker than clearing the alarms with the

test board UUCSS long clear

Test the fiber link hardware

For each endpoint of the fiber link:

1. Busyout the circuit pack

2. Test the circuit pack (

When looking at test results, consult the explanations for Figure 2-17

Figure 2-18

3. Does

EPN?

a. If

later in this chapter.

Board Not Assigned

Yes

, use the Expansion Interface that may be held reset by an EP N Maintenance circuit pack.

[

a-pnc

b-pnc

command.

(busyout board UUCSS

test board UUCSS long

display for an Expansion Interface in an

test maintenance long

test board UUCSS

] command for the PNC

) and record all test failures.

and

command to release an

4. If

5. If

NOTE:

Tests attempted on the EI circuit pack in the SREPN do not run.

, Did EXP-INTF Test #242 fail?

a. If Yes, replace the EI circuit pack and the lightwave transceiver (if

present) and go back to Step 12 in the ‘‘

Gather information’’

procedure above.

NOTE:

EXP-INTF Test #242 runs an on-board looparound if no lightwave transceiver is connected to the EI.

, Did SNI Test #757 fail?

a. If

Yes

, replace the SNI circuit pack and go back to Step 12 in the

‘‘

Gather information’’ procedure above.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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6. If No, Did SNI Test #756 fail? a. If

Yes

, replace the SNI circuit pack and the lightwave transceiver (if

present) and go back to Step 12 in the ‘‘

Gather information’’

procedure above.

7. If

, Did EXP-INTF Test #240 fail?

a. If

Yes

, replace the EI circuit pack and go back to Step 12 in the

‘‘

Gather information’’ procedure above.

8. If

, Did Test #238 (EXP-INTF) or Test #989 (SNI) fail?

a. If

Yes

, replace the lightwave transceivers and fiber-optic cable and

go back to Step 12 in the ‘‘

Gather information’’ procedure above.

b. The faulted component can be further isolated by using information

in the ‘‘

Loopback tests’’ section later in this chapter.

c. If a fiber out of frame condition exists and lightwave transceivers

are used, check that both lightwave transceivers are of the same type, (9823A or 9823B). If they are not both the same, replace one of the lightwave transceivers so that they match. 9823A is used for distances up to 4900 feet (1493 m) and 9823B is used for distances up to 25,000 feet (7620 m).

Issue 2

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2-29Fault isolation procedures

9. If No, Is a DS1 CONV administered on the fiber-link? a. If

and the problem is still present, follow normal escalation

procedures.

b. If

Yes

, is there an SNI-BD 513 alarmed error (

Loopback tests

The following section describes loopback tests:

■ ‘‘Fiber direct-connect system’’

■ ‘‘DS1 CONV system’’

■ ‘‘Manual loopbac k proced ure’’

, did Test #788 fail or abort and Test #789 fail or abort?

a. If

Yes

, enter

test ds1-facility UUCSS long

for each administered

and equipped DS1 facility.

NOTE:

If the Switch Node Interface (SNI) board’s yellow LED is fast flashing (0.1 sec on/0.1 sec off), it can indicate a problem with the fiber from the SNI board to the SREPN. For more detailed information, refer to the SNI-BD Maintenance Object in Chapter 9 of

Release 7 Maintenance for R7r

DEFINITY ECS

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

555-233-102

Fiber direct-connect system

Figure 2-17 shows the loopbacks performed on the SNI and EI circuit packs.

Issue 2

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2-31Fault isolation procedures

Back of cabinet

DEFINITY

ECS

TN753

switch

node

interface

Test #

757

Test #989

(framing)

Test #

756

Fiber optic

cable

Test #

242

Lightwave

transceivers

SREPN

TN570C

expansion

interface

Test #989

(framing)

Figure 2-17. Fiber fault isolation tests for SNI and EI circuit packs

Figure 2-17

■ Test #756 reports the result of the off-board loopback

■ Test #757 reports the result of the on-board loopback

■ Test #756 and Test #757 can run individually or as part of the

■ Test #242 can be run as part of the

shows that:

UUCSS long

command for an SNI circuit pack.

test board UUCSS long

an Expansion Interface circuit pack. In addition to testing on-board components, this test is helpful for isolating problems

pack and the lightwave transceiver

TDM BUS

Tone clock

Tone

detector

cydf058 RPY 022499

test board

command for

between a circuit

The loopback shown in this diagram shows only part what Test #242 does. If no lightwave transceiver is connected to the Expansion Interface circuit pack, an on-board loopback is performed on the Expansion Interface circuit pack. For more information about Test #242, see the EXP-INTF Maintenance Object in Chapter 9 of

Maintenance for R7r

DEFINITY ECS Release 7

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

SREPN Maintenance

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DS1 CONV system

Additional DS1-CONV loopback tests can further isolate the problem as shown in

Figure 2-18

Lightwave

transceiver

Test #789

loops here

DEFINITY

ECS SREPN

Test #797 loops at

internal interface

for D S 1 facility

DS1C DS1CCSU CSU

DS1 facility

Test #799

LB2

Test #799

LB1

cydf059 KLC 022499

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2-32Fault isolation procedures

Tests 780,

788, 797 799 start

here

Figure 2-18. DS1 CONV loopback tests

Figure 2-18

■ If Test #799 fails at LB1, the problem is with DS1C #1, CSU #1, or the

shows that:

connections between them.

■ If Test #799 passes at LB1 and fails at LB2, the problem is with CSU #1.

■ If Test #799 passes at LB1 and at LB2, the problem is with the DS1 facility ,

CSU #2, connections to CSU #2, or DS1C #2.

■ For more information about loopback Tests #788 and #789 (isolates the

lightwave transceiver), see the DS1 CONV-BD section in Chapter 9 of

DEFINITY ECS Release 7 Maintenance for R7r

Manual loopback procedure

Lightwave transceivers are not isolated as part of Expansion Interface or DS1-CONV circuit pack tests. For example, when the Expansion Interface Lightwave Transceiver Looparound Test (#242) and the Expansion Interface Local Loop Around Test #240 pass, this indicates that the Expansion Interface circuit pack is functioning properly, but it does not verify that the optical portion of the lightwave transceiver is functioning properly.

To being the manual loopback procedure:

1. If duplicate Expansion Interface Links are available, issue the

UUCSS

command on the standby Expansion Interface circuit packs on

both ends of fiber.

test board

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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2. If this test passes from both sides, but other tests fail, such as Test #241, this condition indicates either a faulty lightwave transceiver or a faulty fiber cable. To determine if either a lightwave transceiver or the fiber itself has failed, execute the Expansion Interface ‘‘

Manual loopb ack proc e dure’’

described below.

NOTE:

This test can only be run from both Expansion Interface circuit packs if they are the Standby pair, and if the Active pair is working properly .

Use this procedure when

■ Using DS1 CONV facilities and a 9823A lightwave transceiver.

■ An EI/SNI circuit pack cannot be tested by software. For example, an EI

circuit pack located in an EPN that is down cannot be tested. This can occur when communication between the switch node carrier and the SPE is down.

WARNING:

This procedure is destructive; all calls are broken down.

Issue 2

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2-33Fault isolation procedures

To begin the manual loopback procedure:

1. Run the configuration audit test (#759) on SNI circuit packs where possible with

2. Run the Processor Route Audit Test (#760) with the

long

command for the active SNC in the switch node carrier. If the active

SNC is not inserted, Test #760 can be run with

a-pnc

test board UUCSS s

b-pnc

test board UUCSS

test hardware-group pnc

3. Determine whether more than one SNI is unable to communicate with software. Verify SNI and SNC circuit pack insertion with the

configuration carrier UUC

command and check for SNI and SNC

list

insertion for every administered switch node carrier.

4. If all of the SNIs and SNCs are not inserted (

No Board

displays for each board) in the entire PNC (either the a-pnc or the b-pnc), then the link between the PP N E I (on the PNC where SNI and SNC circuit packs did not insert) and the connected SNI is not functioning properly.

a. Run the

test board UUCSS

command on the PPN EI and fix any

problems found. b. Perform the manual loopback procedure for the PPN EI. c. Perform the manual loopback procedure for the SNI connected to

the PPN EI. d. Replace the active SNC.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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2-34Fault isolation procedures

5. If the system has a two-level switch node carrier configuration, that is ( must apply)

■ SNI-SNI fiber links exist

■ The SNIs and SNCs in the second switch node carrier only (the

switch node carrier that has no SNI connected to the PPN EI) are not inserted

■ At least two SNI-SNI fiber links exist

Then perform the following steps:

a. Run the

test board UUCSS long

command on the SNIs in the first switch node carrier that are connected to SNIs in the second switch node carrier and fix any problems found.

b. Replace the active SNC. c. P erform the manual loopback procedure for the SNIs in the second

switch node carrier that are connected to SNIs in the first switch node carrier.

6. If software is unable to communicate with an EPN EI, but can communicate with the connected SNI:

a. Run the

test board UUCSS long

command on the connected SNI

and fix any problems found.

b. Busyout the EI or SNI circuit pack (

busyout board UUCSS

all

7. Disconnect the transmit and receive fiber pair from the fiber connectors on the back of the cabinet.

NOTE:

Note which is the transmit and which is the receive side for proper re-connection at the end of this procedure.

DEFINITY® Enterprise Communications Server Release 7 Installation and Maintenance for Survivable Remote EPN

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8. Connect the transmit and receive cables together using the fiber optic coupler (Comcode 407643014, provided in Maintenance Kit #30) to create a loop as shown in Figure 2-19

Back of cabinet

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2-35Fault isolation procedures

cydfloop LJK 032398

Figure Notes

1. Fiber optic coupling (Comcode 407643014)

Figure 2-19. Manual loopback with fiber optic coupling

9. Go to the front of the cabinet and inspect the yellow LED.

a. If the yellow LED flashes on at a rate of once per second, the

Expansion Interface or Switch Node Interface circuit pack or transceiver should be replaced.

b. If the yellow LED flashes on at a rate of 5 times per second, the

Expansion Interface or Switch Node Interface circuit pack or the lightwave transceiver may need replacement. This condition may also be due to a faulty system clock on the network containing the Expansion Interface circuit pack or in the switch node carrier containing the SNI.

c. If the yellow LED was blinking before starting this procedure and

the yellow LED is not blinking now, this circuit pack (Expansion Interface or Switch Node Interface) and the lightwave transceiver are functioning properly.

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10. Replace faulty component(s) and reconnect the original fiber. Be sure to reconnect the fibers properly as noted in Step 7 in this ‘‘

procedure’’ section.

11. Release the Expansion Interface circuit pack or Switch Node Interface circuit pack (

release board UUCSS

12. If problems still exist after the Manual Loopback Procedure indicates that both Expansion Interface circuit packs and both lightwave transceivers are healthy, verify that each optical fiber is connected to a transmitter at one end and a receiver at the other.

DS1 interface cable pinout

Table 2-11 shows the pin assignments for the cable connecting the TN1654 DS1

CONV circuit pack to DS1 facilities.

Issue 2

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2-36Fault isolation procedures

Manual loopback

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Table 2-11. DS1 Interface Cable Connectors

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June 1999

2-37Fault isolation procedures

50-Pin

Connector

Lead Desig.

Facility D Line In LID 38 W-BL 11 W-BL Facility D Line In LID* 13 BL-W 03 BL-W Facility D Line Out LOD 39 W-O 09 W-O Facility D Line Out LOD* 14 O-W 01 O-W

Facility C Line In LIC 41 W-G 11 W-G Facility C Line In LIC* 16 G-W 03 G-W Facility C Line Out LOC 42 W-BR 09 W-BR Facility C Line Out LOC* 17 BR-W 01 BR-W

Facility B Line In LIB 44 W-S 11 W-S Facility B Line In LIB* 19 S-W 03 S-W Facility B Line Out LOB 45 R-BL 09 R-BL Facility B Line Out LOB* 20 BL-R 01 BL-R

Pin #

Plug 04

Plug 03

Plug 02

Plug 01

15-Pin

Connector

Color Pin Color

Facility A Line In LIA 47 R-O 11 R-O Facility A Line In LIA* 22 O-R 03 O-R Facility A Line Out LOA 48 R-G 09 R-G Facility A Line Out LOA* 23 G-R 01 G-R

Continued on next page

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110 block cross-connect pins

Table 2-12. 110 block cross-connect pins

SRP Aux EPN Aux

CrossAmphenol Pin Number Color

Connect

Number

Lead Designation

23 G-V 46 Cust Rtn 3 W-O 27

SRP Aux SRP Switch

CrossAmphenol Pin Number Color

Connect

Number

Lead Designation

27 W-O 3 Pwr Fail (-48V) 46 G-V 23 48 V-G 45 Cust A 23 BK-O 37

EPN Aux SRP Switch

CrossAmphenol Pin Number Color

Connect

Number

Lead Designation

02 O-W 4 Cust Rtn 24 O-BK 12

CrossConnect Pin

Number Color

CrossConnect Pin Number Color

Issue 2

June 1999

2-38110 block cross-connect pins

Amphenol Pin Number

28 W-G 5 SRPresent 47 V-BR 49 29 W-BR 7 SRActive 48 BR-V 24 46 V-BL 41 -48V Rtn 41 V-BL 46 21 BL-V 42 -48V In 42 BL-V 21 48 V-G 45 23 G-V 46

1. When the loop between Cust A (alarm) and Cust Rtn (return) closes, the SRSwitch configures the SRP into Restore mode, overriding the faceplate switch setting. Closure of the customer alarm relay is controlled by an SRP SAT comma nd whic h closes the cu stomer alar m relay on the SRP processor.

Pwr Fail (-48V) is grounded when the TN2301 detects that its -48V redundant power is bad. Cust A (alarm) - see above. SRPresent is always grounded, indicating to the TN775C (Maint.) that it is connected in a SREPN. SRActive is generated by TN775C (Maint.) to disconnect links from Release 7r to SRP in Survive mode.

-48V In/Rtn is input and return used by DC /DC converter for sup plying redundant power to the optical transceivers .

SR Cntrl/Rtn, when active, connects to the SR Cntrl Rtn signal on the TN775C (Maint.). Loop closed TN2301 goes into Survive mode; loop open - TN2301 cannot come out of Survive mode without manual or remote reset.

2. Momentarily short these two leads on the EPN Aux to verify the detection circuit on the TN2301 and the Maintenance (TN775C) circuit pack wiring .

SR Cntrl 43 V-O 47 SR Cntrl Rtn 44 O-V 22

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Figure 2-20 shows the pinout and cross-connections for the SREPN.

R6R PPN

TN 2301 SR Switch

"Y" cable

SRP

Latch

Reset

TN 790

processor

46 Ext_Alm_Rt (G-V)

Ext_Alm (V-G)

SRPresent (V-BR) (W-G) A u x_ A lm_3

47 48

SRActive (BR-V)

-48v.(V-BL)

-48v.Rt (BL-V)

SRCnt1 (V-O)

SRCntRt (O-V)

CustRtn (O-BK)

PwrFail (G-V) CustA (BK-O)

SR Switch

SRP Aux

Aux_Alm_2 (W-O)

(W-BR) Aux_Alm_4

(V-G) E x t_ A lm

(G-V) Ext_Alm_Rt

(W-O) A u x_ A lm_2

(V-BL) Grd

(BL-V) -48v.

(O-W) Grd

EPN

Aux

5 7

41 42 45 46

4 3

Maintenance/Test

EPN

Issue 2

June 1999

2-39Replacing the TN2301 circuit pack

BEI

-48v.

TN775C

A-PNC B-PNC

Figure Notes

1. S witches to ground after link failure (approximately 3 minutes)

2. Momentary closure after 3 minutes

Figure 2-20. SREPN pinout and connections

Replacing the TN2301 circuit pack

CAUTION:

EPN service is interrupted until a re placement TN230 1 is inst alled, powered up, and the EI links restored.

Unseat the circuit pack

1. Power down the cabinet by turning the power switch off.

2. Attach an ESD strap to your wrist.

iodf001 EWS 111198

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3. Push the latch pin upward to unlock the locking lever.

4. Pull down on the locking lever until the circuit pack disconnects from its socket.

5. Pull the circuit pack just enough to break contact with the backplane connector, but do not remove it from the cabinet.

CAUTION:

Ensure that there is enough slack drawn from the extra fiber optic cabling from the bottom pan of the cabinet to clear the circuit pack from the cabinet (approximately 18 inches or 45.7 cm).

Replace the circuit pack

NOTE:

If the same optical transceivers can be reused, then the optical connections to the transceivers do not have to be removed. Just remove the transceivers from the old circuit pack and reconnect them to the corresponding connector positions on the replacement circuit pack.

Issue 2

June 1999

2-40Replacing the TN2301 circuit pack

1. Remove the fiber connections from each transceiver,

taking care to note to which transceiver the cables go and which is the transmit (TX ) and receive (RX) connections for each transceiver.

See Figure 2-21.

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PPN A

EPN A

Issue 2

June 1999

2-41Replacing the TN2301 circuit pack

Figure Notes

1. Connections from PPN A (lightwave transceiver type must match other end)

2. Connections to EPN A

3. Connections from PPN B

4. Connections to EPN B

5. Lightwave transceiver (9823A is always in this position)

6. Fiber optic cable pairs from the rear panel of the SRP cabinet

Figure 2-21. Transceivers attached to the TN2301 circuit pack

2. Remove the bracket and then the transceivers from the old circuit pack and replace them

in the identical positions

on the new TN2301 circuit

pack.

PPN B

EPN B

ckdf03fo KLC 010899

3. Replace the bracket over the transceivers to secure them to the board.

4. Feed the fiber cables through the slot in the back of the circuit pack and replace the fiber connections on each of the transceivers.

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5. Insert the new circuit pack, feeding the fiber patch cords to the bottom pan of the cabinet.

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Reseat the circuit pack

1. Reseat the circuit pack into the backplane connector.

WARNING:

Ensure that the fiber cables are not bent or pinched between the back of the circuit pack and the backplane of the cabinet.

2. Lift the locking lever until the pin engages.

3. Power up the cabinet.

Restore from remote location

Issue 2

June 1999

2-42Restore from remote location

restore survivable-remote-link

The connections to the Release 7r PPN just as if the faceplate switch was manually set to the RSTR (Restore) position.

NOTE:

The TN2301 faceplate switch position overrides the

survivable-remote-link

Once the connection to the Release 7r is repaired:

1. Dial in and log onto the SRP processor.

2. Type the relay on the Processor circuit pack.

3. Wait at least 3 minutes while the EPN goes through its cold restart and then check the status of the link connections with the command for whether the link between the Release 7r and the EPN is up (Figure 2-9

When the connections are up on both sides (EPN and Release 7r), the system is successfully reconnected.

restore survivable-remot e-lin k

both

command, should the two conflict.

the Release 7r and the SRP systems

command reconfigures the EI link

restore

command, which closes the

status health

to determine

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The Table 2-13 describes the conditions in which the restore from a remote location is possible.

Table 2-13. TN2301 switch configuration based on input

Inputs to Control Logic Modes

Survive Remote restore

Not active Not active AUTO Good Normal mode: EP N connected with Release 7r

Not active Active AUTO Good Survive mode: EPN connected to SRP

mode

requested

Switch position

SRP power State of SREPN

PPN

2-43Restore from remote location

Not active Does not

matter Active Do es not

matter Not active Does not

matter Active Do es not

matter

1. The EPN Maintenance (TN775C) circuit pac k requests switching to Survive mode.

TEST Good Survive mode: EPN connec ted to SRP

RSTR Good Normal mode: EPN connec ted to Release 7r

PPN

RSTR Bad Normal mode: EP N connected with Release 7r

PPN

AUTO or RSTR

Good Normal mode: EPN connected to Release 7r

PPN

Continued on next page

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System links

The state of a system link is dependent on the state of the various hardware components that it travels over. The switch maintains a list of hardware components over which the link travels, called the hardware path.

For each system link there is a current and a faulted hardware path as shown in

Table 2-14

Table 2-14. Hardware path data for link repair

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June 1999

2-44System links

Hardware path

Current

Faulted

1. Path that the link traversed when it last went down.

2. The time at which the faulted path was last recorded is preserved and is accessible through the status sys-link location, which shows the state of both the hardware paths (current and faulted) and the state of each of the components in that path, and the list sys-link commands.

1. Focus attention on the

Link status

Up Yes Yes Down No Yes Up Yes Down Yes

Hardware path data present?

current hardware path

Errors cleared at recovery?

for problems that do not

involve a link that is down.

2. If the link is down, focus on the

faulted hardware path

3. If any alarms are present, follow the maintenance procedures for the alarmed components to clear those alarms first.

AT&T Definity - Enterprise R 8-2 Installation And Maint - for Survivable Rem

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

About This Document

Purpose

The Survivable Remote Expansion Port Network (SREPN)

Features not supported

Intended audience

Conventions used

Safety precautions

Electromagnetic interference

Static electricity

Remove/Install Circuit Packs

Security issues

Standards compliance

Electromagnetic compatibility standards

European Union standards

Trademarks and Service Marks

Related documents

Federal Communications Commission statement

Part 68: Statement

How to order documentation

How to comment on this document

Where to call for technical support

SREPN Installation

Check customer’s order

Correcting shipping errors

Unpack and inspect

Install the SRP cabinet

Connect cabinet ground

Install rear panels

Install ground plates

Connect cables to the SRP

Connect SRP fiber cables for standard/high reliability

Connect SRP fiber cables for critical reliability

Connect the SRP and management terminal

MDF connections

Power up the SRP

Administer the Release 7r and SRP

Administration of the Release 7r

Administration of the SRP

Replace Release 7r circuit packs

Replace EPN circuit packs and make cable connections

Connect DS1CONV cables for standard/high reliability

Connect DS1CONV cables for critical reliability

Connect direct fiber cables for standard/high reliability

Connect direct fiber cables for critical reliability

Test the SRP

Test the survive mode function

Verify the test switch operation

Verify the SRP status

Upgrade the SRP

SREPN Maintenance

Before starting to troubleshoot

SREPN connections

Required and optional circuit packs

Interfacing circuit packs

Transfer sequence to Survive mode

SREPN connections

Maintenance procedure

Check system status

Repair the link connection

Reconnect the Release 7r to the EPN

Post-reset check

Power alarms

System resets

Fault isolation procedures

Fiber fault isolation

Loopback tests

DS1 interface cable pinout

110 block cross-connect pins

Replacing the TN2301 circuit pack

Unseat the circuit pack

Replace the circuit pack

Reseat the circuit pack

Restore from remote location

System links