iden ebts subsystem troubleshooting guide

8/16/2019 IDEN EBTS Subsystem Troubleshooting Guide

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Technical Manual

iDEN

EBTS Subsystem

Troubleshooting Guide

6881012Y79-B

23-Feb-09

SR 16.0

RF SUBSYSTEM


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Notice to Users

No part of this publication, or any software included with it, may be reproduced, stored in a retrieval system, or transmitted in any

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express prior written permission of the copyright holder. Motorola, Inc. provides this document “AS IS” without warranty of any kind,

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material contained in the Motorola products described in this document may not be copied, reproduced, reverse engineered,

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copyrights, patents or patent applications of Motorola or other 3rd Party supplied software, except for the normal non-exclusive,

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© 2009 - Motorola, Inc. All Rights Reserved REV 11/19/08

Contact Information

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Arlington Heights, IL 60004

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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.

While reasonable efforts have been made to assure the accuracy of this document, this document may contain technical or

typographical errors or omissions. Motorola, Inc. and its subsidiaries and affiliates disclaim responsibility for any labor,

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affiliates shall not be liable for any damages (including, but not limited to, consequential, indirect, incidental, or special damages

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products or services described herein and reserves the right to make changes from time to time in content of this document

and substitute the new document therefor, with no obligation to notify any person or party of such changes or substitutions.


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Table of Contents

EBTS Subsystem SR 16.0

ii 6881012Y79-B 23-Feb-09

EBTS Subsystem Descr ipt ion . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Introduction .................................................................................... 1-6

EBTS Subsystem Components . . . . . . . . . . . . . . . . . . . . 1-7

Access Control Gateway................................................................ 1-7

iDEN Monitor Unit/Environmental Alarm System........................... 1-9

Base Radio..................................................................................... 1-9

Quad Base Radio......................................................................... 1-10

Quad2 Base Radio....................................................................... 1-11

RF Distribution System................................................................. 1-13

EBTS Subsystem Components Block Diagrams.......................... 1-14

Chapter 2

Troubleshooting Strategies

Introduct ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

iDEN Open Problem List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

About MMI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Field Replaceable Units (FRU). . . . . . . . . . . . . . . . . . . . . 2-5

Site Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

General EBTS Troubleshoot ing Strategies . . . . . . . . . . . . . . 2-7

Data Collection............................................................................... 2-7

EBTS Troubleshoo ting Resources. . . . . . . . . . . . . . . . . . . . 2-10

Operations and Maintenance Center . . . . . . . . . . . . . . 2-10

Events and Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

EBTS Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Integrated Site Controller (iSC) Indicators.................................... 2-13

Base Radio (BR) Indicators.......................................................... 2-17

Quad2 Base Radio - Front Panel LEDs and connectors.............. 2-22

iDEN Monitor Unit (iMU/EAS) Indicators...................................... 2-24

R-2660 iDEN Test Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

Base Radio Tests......................................................................... 2-27

Drive Test Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

Site Performance Testing using Drive Test Application ............... 2-29

Alarm Traps to the OMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Alarm Severity .............................................................................. 2-30 Alarm Severity Filter .................................................................... 2-30

Alarm Traps — Message Content................................................ 2-31

ACG L inks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

ACG Physical Links...................................................................... 2-32

ACG Reliable Logical Links.......................................................... 2-32

Communication Link Failu res. . . . . . . . . . . . . . . . . . . . . . . . 2-33

http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-


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SR 16.0 EBTS Subsystem

23-Feb-09 6881012Y79-B iii

Types of Links .............................................................................. 2-33

ACG Fault Recovery .................................................................... 2-33

Recovery from PCCH Base Radio Failures . . . . . . . . . . . . . 2-34

BR Supporting PCCH Fails .......................................................... 2-34

Recovery from ACG Failures . . . . . . . . . . . . . . . . . . . . . . . . 2-35

ACG Failure Recovery ................................................................. 2-35

Base Radio Cont rol ler States . . . . . . . . . . . . . . . . . . . . . . . 2-36

General State Definitions ............................................................. 2-36

Base Radio Cont rol ler (BRC) States . . . . . . . . . . . . . . . . . . 2-37

State Management within the ACG.............................................. 2-38

Troubleshooting RF-related Problems . . . . . . . . . . . . . . . . 2-40

EBTS Equipment-related Problems . . . . . . . . . . . . . . . . . . . 2-41

Chapter 3

EBTS Troubleshoot ingPurpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Supplemental Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Resolv ing Hardware Issues . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

High Stability Oscillator (HSO) Failure . . . . . . . . . . . . . . 3-5

GPS Problem - 0 Tracked Satell ites . . . . . . . . . . . . . . . 3-10

Mult iple Momentary FREE RUN Events . . . . . . . . . . . . 3-19

Audio Problems Related to the Antenna . . . . . . . . . . . 3-22

Duplex Wattmeter VSWR Alarm Problem . . . . . . . . . . . 3-24

EBTS 5MHZ/iPPS Signal Integrity Test for EBRCand Quad BR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26

Incorrect ly Programmed ExBRCs FSB. . . . . . . . . . . . . 3-35

Resolv ing Vis ibil ity Issues to the OMC-R . . . . . . . . . . . . . . 3-37

Resolving Connectivity Issues to other Network

Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38

Resolv ing Download Issues . . . . . . . . . . . . . . . . . . . . . . . . . 3-39

Base Radio (BR) TX Initialization/Diagnost ic Testing

Failures and Possible BR Application Code Download

Issue. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39Resolv ing Conf iguration Issues . . . . . . . . . . . . . . . . . . . . . . 3-43

Newly Installed BRs Do Not Come In Service -

Ethernet Loop Carrier Limit Exceeded . . . . . . . . . . . . . 3-43

Newly Installed BRs Not Keying Up After Site

Download - 5MHz/1PPS Loop Overload . . . . . . . . . . . . 3-46

Resolv ing Provision ing Issues. . . . . . . . . . . . . . . . . . . . . . . 3-49

http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-


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iv 6881012Y79-B 23-Feb-09

Resolving Loss or Disrupt ion of Service Issues . . . . . . . . 3-50

Resolv ing Database Issues. . . . . . . . . . . . . . . . . . . . . . . . . . 3-51

Resolv ing Bil ling Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52

Resolv ing Statis tics Issues. . . . . . . . . . . . . . . . . . . . . . . . . . 3-53

Appendix AEBTS GPS Troubleshooting Information

Overv iew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Introduction ................................................................................... A-2

Scope ............................................................................................ A-2

GPS Hardware.............................................................................. A-2

GPS Failures that cause EBTS Reset . . . . . . . . . . . . . . . . . . A-3

No GPS Lock ................................................................................ A-3

Loss of GPS Lock ......................................................................... A-3

Critical GPS Fault.......................................................................... A-3Traps and A larms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

[201] ACG Reset ........................................................................... A-4

[305] TFR/SRI Detected Alarm...................................................... A-4

[306] GPS Problem-0 Tracked Satellites....................................... A-4

[320] ACG Failed to Achieve GPS Sync ....................................... A-4

[313] ACG Freerun Timeout .......................................................... A-5

[314] HSO 1PPS Missing .............................................................. A-5

[316] HSO Phase Not Locked ....................................................... A-5

[317] Bad Original Position in GPSR............................................. A-5

[318] HSO Frequency Not Locked ................................................ A-6[319] HSO Failed........................................................................... A-6

GPS SM transitions with reason [901]........................................... A-6

Immediate switchover (30 minutes or less)................................... A-6

Index



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23-Feb-09 6881012Y79-B v

List of Procedures 0

TO Access the iDEN Technical Training Course Catalog ...................................................... 1-5TO Resolve the iSC HSO Failure Issue at the EBTS Site...................................................... 3-7TO Resolve the “[306] GPS Problem - 0 Tracked Satellites” Issue at the EBTS Site .......... 3-13

TO Troubleshoot a Suspected Bad GPS Antenna Signal .................................................... 3-15TO Troubleshoot a Suspected Bad iSC for a GPS Satellite Tracking Problem.................... 3-17TO Resolve Antenna Issues at the EBTS Site ..................................................................... 3-22TO Test the Terminators ...................................................................................................... 3-28TO Test the Signal Integrity.................................................................................................. 3-30TO Change the Affected Register on the ExBRC to its Correct Value................................. 3-35TO Resolve Single/QUAD Channel BR Diagnostic Failure Issue......................................... 3-41



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List of Procedures


vi 6881012Y79-B 23-Feb-09

NOT E S . . .



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23-Feb-09 6881012Y79-B vii

List of Figures 0

Figure 1-1 iDEN System Diagram ...................................................................................... 1-6

Figure 1-2 Quad2 Base Radio .......................................................................................... 1-12

Figure 1-3 ACG/iSC and iMU/EAS Block Diagram........................................................... 1-15

Figure 1-4 BR Block Diagram........................................................................................... 1-16

Figure 1-5 Duplexer RFDS Block Diagram....................................................................... 1-17

Figure 1-6 Antenna Diplexer Block Diagram .................................................................... 1-18

Figure 2-1 Alarm Display .................................................................................................. 2-12

Figure 2-2 iSC2 Front Panel ............................................................................................. 2-13

Figure 2-3 iSC3 Front Panel ............................................................................................. 2-15

Figure 2-4 Single Channel BR Controller Module Front Panel......................................... 2-17

Figure 2-5 QUAD Channel BR Exciter/Controller Module Front Panel............................. 2-18

Figure 2-6 Quad2 Base Radio - Components .................................................................. 2-22

Figure 2-7 Power Amplifier LEDs ..................................................................................... 2-23

Figure 2-8 Transceiver LEDs and Connectors ................................................................. 2-23

Figure 2-9 iMU Front Panel .............................................................................................. 2-24

Figure 2-10 EAS Front Panel.............................................................................................. 2-25

Figure 2-11 EAS2 Front Panel............................................................................................ 2-25

Figure 3-1 HSO Failure Event messages for Standby ACG using the iSC2

(iSC3 would be similar) ..................................................................................... 3-5

Figure 3-2 Event messages for Active ACG Tracking 0 Satellites & Free Running

for More Than 4 Hours (shown for iSC2; iSC3 similar) ................................... 3-12

Figure 3-3 Event messages for Active ACG Experiencing Multiple Momentary

FREERUN Started & Ended (shown for iSC2; iSC3 similar)........................... 3-20

Figure 3-4 Site Reference - 25% and 75% Duty Cycle Pulse Mask................................. 3-32Figure 3-5 Signal Examples.............................................................................................. 3-33

Figure 3-6 BRC error log report for a single channel BR (other BRs would be similar).... 3-40



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List of Figures


viii 6881012Y79-B 23-Feb-09

NOT E S . . .



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List of Tables


23-Feb-09 6881012Y79-B ix

List of Tables 0

Table 1 Supplemental Publications................................................................................. xivTable 2 Disclosure Table................................................................................................ xxiiTable 3 Manual Revision Details................................................................................... xxiii

Table 4 Contributors...................................................................................................... xxivTable 2-1 Network Status Indicators ............................................................................... 2-14

Table 2-2 System Status Indicators................................................................................. 2-15

Table 2-3 Reference Status Indicators............................................................................ 2-15

Table 2-4 iSC3 Front Panel Indicators ............................................................................ 2-16

Table 2-5 Single Channel BRC Indicators....................................................................... 2-17

Table 2-6 QUAD Channel Ex/BRC Indicators ................................................................. 2-19

Table 2-7 iMU Indicators ................................................................................................. 2-24

Table 2-8 EAS Indicators................................................................................................. 2-25

Table 2-9 EAS2 Indicators............................................................................................... 2-26

Table 2-10 Alarm Severity Levels...................................................................................... 2-30Table 2-11 Data Communication Signal Transport Links.................................................. 2-32

Table 2-12 Data Links ....................................................................................................... 2-32

Table 2-13 BRC Device State Management Details ......................................................... 2-36

Table 2-14 BRC States...................................................................................................... 2-37

Table 3-1 General Troubleshooting Symptom/Cause/Action Table ................................ 3-33



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List of Tables


x 6881012Y79-B 23-Feb-09

NOT E S . . .



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23-Feb-09 6881012Y79-B xi

List of Changed Pages 0

The table below lists new or changed information, of a technical nature, that has been added or changed

since the previous release of this document.

Chapter Section Type of Change

About this manual . . . . Updated references to SR 16.0.

Chapter 1 Purpose and Focus Updated references to SR 16.0.

Chapter 2 General EBTS Troubleshooting Strategies Updated references to SR 16.0.

Deleted: “J2300 Protocol Analyzer” section.

Chapter 3 Resolving Hardware Issues Inserted: “Audio Problems Related to the

Antenna” scenario.

Inserted: “Duplex Wattmeter VSWR Alarm

Problem” scenario.

Inserted: “EBTS 5MHZ/iPPS Signal

Integrity Test for EBRC and Quad BR”

scenario.

Inserted: “Incorrectly Programmed

ExBRCs FSB” scenario.

Deleted: “Noted Increase of BRC 55001

Alarms” scenario.

Deleted: “Background Download may Fail

in AFR Mode” scenario.

Deleted: “Stats to not Upload on iSC2 in

AFR Mode” scenario.

Resolving Statistics Issues Deleted: “EBTS Site Not Reporting ecell

Statistics to OMC-R” scenario.



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List of Changed Pages


xii 6881012Y79-B 23-Feb-09

NOTES . . .



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23-Feb-09 6881012Y79-B xi

About this manual....

This chapter of the guide describes the guide in general terms. The major

topics of this chapter include: The intended content of the guide

How the guide is to be used

Who is to use the guide

Other reference material that supports information in this guide

Elements in the appearance of the guide and their meaning

General safety guidelines

The changes to the guide over time

Who helped produce and validate information in the guide

Purpose The purpose of this manual is to provide information to facilitate trouble-

shooting of the SR 16.0 Enhanced Base Transceiver System (EBTS) RF

subsystem with a focus on the following EBTS components:

Access Controller Gateway (ACG) using the integrated Site Controller

(iSC) platform; either Second Generation iSC (iSC2) or Third Generation

iSC (iSC3)

Base Radios (BRs)

RF Distribution System (RFDS)

This manual addresses problems in a single urban.

The EBTS Troubleshooting Guide assists users to:

Identify, verify, and isolate trouble in the EBTS

Obtain and use data relevant to troubleshooting

Employ strategies to diagnose and troubleshoot EBTS problems

Recognize frequent problems in the EBTS

Distinguish when a problem appearing to be an EBTS issue may be related

to another network element or transport component

Restore functionality/operation of the EBTS



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Audience Profile


xii 6881012Y79-B 23-Feb-09

Audience Profile 0

Tasks and procedures included should be performed by senior (second level)

support personnel who are actively involved in the day-to-day technical activ-

ities required to maintain system functionality.



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Customer Network Resolution Center (CNRC)


23-Feb-09 6881012Y79-B xiii

Customer Network Resolution Center (CNRC) 0

The Customer Network Resolution Center (CNRC) is a integral part of the

network support process.

Before performing any major changes or optimizations on the system, pleasecontact the CNRC. Notify the CNRC with the nature of and schedule for the

change. This will enable the CNRC to have the correct technical support

engineers on call in case they are needed.

Please refer to the Customer Guide to iDEN Customer Network Resolution

Center (CNRC) (WP2000-003) for more information regarding:

Procedures for calling the CNRC

Classification of trouble tickets

The escalation processes

This document is located on the iDEN extranet Web site at the followingURL:

http://mynetworksupport.motorola.com

The CNRC can be contacted at the following telephone numbers:

United States and Canada

1-800- 499-6477

International

1-847-704-9800

Note Toll-free international access codes are available for many locations.Please refer to Appendix E of the Customer Guide to iDEN Customer

Network Resolution Center (WP2000-003) for a list of these access

codes and dialing instructions.



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Related Manuals


xiv 6881012Y79-B 23-Feb-09

Related Manuals 0

The following publications may be required to supplement the information

contained in this guide.

Table 1 Supplemental Publications

Part Number Title

68P81131E90 Guide to Motorola Acronyms and Terms

68P81098E05 iDEN Integrated Site Controller System Manual

68P80801E30 iDEN Gen 3 Site Controller System Manual

68P80801E35

iDEN Enhanced Base Transceiver System

(EBTS)

Volume 1 of 3 System Installation and

Testing

Volume 2 of 3 Base Radios

Volume 3 of 3 RF Distribution Systems

68P80801B75 iDEN Radio Frequency Interference

68P81001Y55iDEN Ethernet Analyzer Detective Software

User’s Manual

6871000P02iDEN System Overview and Functional

Description

6880309F16R-2660 iDEN Digital Communications System

Analyzer Operator’s Manual

Note The Operator’s Manual is supplied with the R-2660 and is notavailable online. A CD-ROM version, 6880309F17, can be ordered from

Motorola International Parts via 1-800-422-4210

asce16 SR 16.0 Alarm & State Change Events

Note This Alarm & State Change Events documentation is in a ZIP file.

WP2003-014 IDEN EBTS Fan Maintenance Plan

WP2001-010 iDEN EBTS Total Site Maintenance

WP2003-011 RF Statistics and Solutions, RF Link Optimization

WP2003-008 Drive Test Data Collection and Analysis

WP05008 900 Quad EBTS Multi-Sector Rack Configuration

WP2002-021 Understanding iDEN System Fault Tolerance

WP07003 J2300D (Window Based) Set Up Procedure



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Related Manuals


23-Feb-09 6881012Y79-B xv

WP07004 Managing AFR QoS

WP06004Installing and Using Ethereal to Capture EBTS

Traces

WP2002-025 EBTS Backhaul: Frame Relay DS0 Requirements

Table 1 Supplemental Publications (continued)

Part Number Title



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Manuals Online


xvi 6881012Y79-B 23-Feb-09

Manuals Online 1

This guide is available on the World Wide Web at My Network Support , the

iDEN customer site. This site was created to provide secure access to critical

iDEN infrastructure information. This Web site features a library of iDEN

infrastructure technical documentation such as bulletins, system releasedocuments, and product manuals.

The documents are located on the secured extranet Web site at the following

URL:

https://mynetworksupport.motorola.com

For information on obtaining an account on this site, go to the following URL:

https://membership.motorola.com/motorola



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Reporting Manual Errors


23-Feb-09 6881012Y79-B xvii

Reporting Manual Errors 1

If you locate an error or identify a deficiency in this guide, please take the

time to contact us at the following email address:

[email protected]

Be sure to include your name, fax or phone number, the complete guide title

and part number, the page number where the error is located, and any

comments you may have regarding what you have found.

Thank you for your time. We appreciate any comments from the users of our

manuals.



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Conventions


xviii 6881012Y79-B 23-Feb-09

Conventions 1

Software submenu commands— Tabl e > Tabl e Desi gner

new terms— mobile subscriber

keystrokes— Ctrl+Alt+Delete, Return mouse clicks—click, double-click

user input—Type delete

screen output— DAP i s start i ng. . . .

Hardware CD-ROM

Safety This guide contains safety notices (alerts). Alerts are based on the standards

that apply to graphics on Motorola equipment. Specific procedural notices are

stated in the procedures as required and have specific visual representations.

The representations are:

!DANGER

INDICATES AN IMMINENTLY HAZARDOUS SITUATION

WHICH, IF NOT AVOIDED, WILL RESULT IN DEATH OR

SERIOUS INJURY.

!WARNING

Indicates a potentially hazardous s ituation which, if notavoided, could result in death or serious injury.

!CAUTION

Indicates a potentially hazardous s ituation which, if not

avoided, could result in minor or moderate injury.

CAUTIONWithout the alert symbo l indicates a potentially hazardoussituation which, if not avoided, may result in p roperty damage.

Important Indicates an item of the essence of a topic that is indispensable.

Note Indicates something of notable worth or consequence.



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General Safety


23-Feb-09 6881012Y79-B xix

General Safety 1

Important Remember Safety depends on you!

General safety precautions must be observed during all phases of

operation, service, and repair of the equipment described in thismanual. Failure to comply with these precautions or with specificwarnings elsewhere in this manual violates safety standards of design,manufacture, and intended use of the equipment.

You must heed the safety precautions and warnings listed in the product

manuals for your equipment. Any individual using or maintaining the

product(s), should follow these warnings and all other safety precautions

necessary for the safe operation of the equipment in your operating

environment. Motorola, Inc. assumes no liability for failure to comply with

these requirements.

Keep Away FromLive Circuits

!DANGER

HAZARDOUS VOLTAGE, CURRENT, AND ENERGY LEVELS

ARE PRESENT IN THIS PRODUCT. POWER SWITCH

TERMINALS CAN HAVE HAZARDOUS VOLTAGES PRESENT

EVEN WHEN THE POWER SWITCH IS OFF. DO NOT OPERATETHE SYSTEM WITH THE COVER REMOVED. ALWAYS

REPLACE THE COVER BEFORE TURNING ON THE SYSTEM.

Operating personnel must:

Not remove equipment covers. Only Factory Authorized Service Personnel

or other qualified maintenance personnel may remove equipment covers for

internal subassembly, or component replacement, or any internal

adjustment.

Not replace components with power cable connected. Under certain

conditions, dangerous voltages may exist even with the power cableremoved.

Always disconnect power and discharge circuits before touching them.



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General Safety


xx 6881012Y79-B 23-Feb-09

Ground theEquipment

To minimize shock hazard, the equipment chassis and enclosure must be

connected to an electrical earth ground. The power cable must be either

plugged into an approved three-contact electrical outlet or used with a three-

contact to two-contact adapter. The three-contact to two-contact adapter must

have the grounding wire (green) firmly connected to an electrical ground

(safety ground) at the power outlet. The power jack and mating plug of the power cable must meet International Electrotechnical Commission (IEC)

safety standards.

Electro-StaticDischarge

Motorola strongly recommends that you use an anti-static wrist strap and a

conductive foam pad when installing or upgrading the system. Electronic

components, such as disk drives, computer boards, and memory modules, can

be extremely sensitive to Electro-Static Discharge (ESD). After removing the

component from the system or its protective wrapper, place the component

flat on a grounded, static-free surface, and in the case of a board, component-

side up. Do not slide the component over any surface.

If an ESD station is not available, always wear an anti-static wrist strap that is

attached to an unpainted metal part of the system chassis. This will greatly

reduce the potential for ESD damage.

Do Not Operate In An Explosive Atmosphere

Do not operate the equipment in the presence of flammable gases or fumes.

Operation of any electrical equipment in such an environment constitutes a

definite safety hazard.

Do Not Service Or Adjust Alone

Do not attempt internal service or adjustment, unless another person, capable

of rendering first aid and resuscitation, is present.

Use Caution WhenExposing OrHandling a Cathode-Ray Tube

Breakage of the Cathode-Ray Tube (CRT) causes a high-velocity scattering of

glass fragments (implosion). To prevent CRT implosion, avoid rough

handling or jarring of the equipment. The CRT should be handled only by

qualified maintenance personnel, using approved safety mask and gloves.

Do Not SubstituteParts Or ModifyEquipment

Because of the danger of introducing additional hazards, do not installsubstitute parts or perform any unauthorized modification of equipment.

Contact Motorola Warranty and Repair for service and repair to ensure that

safety features are maintained.



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CMM Labeling and Disclosure Table


23-Feb-09 6881012Y79-B xxi

CMM Labeling and Disclosure Table 1

The People’s Republic of China requires that Motorola’s products comply

with China Management Methods (CMM) environmental regulations. (China

Management Methods refers to the regulation Management Methods for

Controlling Pollution by Electronic Information Products.) Two items areused to demonstrate compliance; the label and the disclosure table.

The label is placed in a customer visible position on the product.

Logo 1 means that the product contains no substances in excess of the

maximum concentration value for materials identified in the China

Management Methods regulation.

Logo 2 means that the product may contain substances in excess of the

maximum concentration value for materials identified in the China

Management Methods regulation, and has an Environmental Friendly Use

Period (EFUP) in years, fifty years in the example shown.

The Environmental Friendly Use Period (EFUP) is the period (in years)

during which the Toxic and Hazardous Substances (T&HS) contained in theElectronic Information Product (EIP) will not leak or mutate causing environ-

mental pollution or bodily injury from the use of the EIP. The EFUP indicated

by the Logo 2 label applies to a product and all its parts. Certain field-

replaceable parts, such as battery modules, can have a different EFUP and are

marked separately.

The Disclosure Table (shown on the following page) is intended only to

communicate compliance with China requirements; it is not intended to

communicate compliance with EU RoHS or any other environmental require-

ments.



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CMM Labeling and Disclosure Table


xxii 6881012Y79-B 23-Feb-09

Table 2 Disc losure Table



27/153

Revision History


23-Feb-09 6881012Y79-B xxiii

Revision History 2

The following table lists revisions for this guide.

Table 3 Manual Revision Detai ls

Date Issue Description of Changes

19-JUL-06 O Original Release

30-Nov-07 A Updated the manual to SR15.0.

23-Feb-09 B Updated the manual to SR16.0.



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Acknowledgements


xxiv 6881012Y79-B 23-Feb-09

Acknowledgements 3

We recognize and thank the following contributors to this guide:

Table 4 Contribu tors

Name

Carlos Carrillo Michael Krol

Zave Domsky Gil Scovill

Carolyn Frank Mark Interrante

Elayne Tillman Patti Rausch

Terry Lowe



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23-Feb-09 6881012Y79-B 1-1

Chapter 1

Overview

In This Chapter Topic See Page

EBTS Subsystem Troubleshooting Overview . . . . . . . . . . . . 1-2

Purpose and Focus ........................................................................ 1-2

Troubleshooting Method ................................................................ 1-2

Scenario Categories....................................................................... 1-3

Restricted Access .......................................................................... 1-3

Target Audience............................................................................. 1-4

Recommended Train ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

EBTS Subsystem Descr ipt ion . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Introduction .................................................................................... 1-6

EBTS Subsystem Components . . . . . . . . . . . . . . . . . . . . 1-7

Access Control Gateway................................................................ 1-7

iDEN Monitor Unit/Environmental Alarm System........................... 1-9

Base Radio..................................................................................... 1-9

Quad Base Radio......................................................................... 1-10

Features..................................................................................... 1-10

Limitations ................................................................................ 1-10

Quad2 Base Radio....................................................................... 1-11

RF Distribution System................................................................. 1-13

TX Combiner ............................................................................ 1-13RX Signal Splitters/multicouplers ............................................ 1-13

Antenna Duplexer..................................................................... 1-13

800/900 MHz Antenna Diplexer............................................... 1-14

EBTS Subsystem Components Block Diagrams.......................... 1-14



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Overview

EBTS Subsystem Troubleshooting Overview


23-Feb-09 6881012Y79-B 1-3

Scenario Categories Troubleshooting procedures and scenarios presented in this manual are

recommendations to commonly encountered issues. Specific issues may be

encountered that vary from the conditions described. Therefore the resolu-

tions cannot be guaranteed, but are intended to serve as a guide.

The following categories will be presented for scenarios describingcommonly used solutions:

Hardware issues—Issues related to the physical network element

Visibility issues to the OMC-R—Issues related to communications

between the OMC-R (Operations and Maintenance Center-Radio) and the

network element

Connectivity issues to other network elements—Issues related to

communication between the network element and other elements in the

network

Download issues—Issues related to software and data distribution to

network elements from the OMC-R

Configuration issues—Issues related to changes to network element’s

operating parameters

Provisioning—Issues related to adding or migrating subscribers in the

system

Loss or disruption of service—Issues related to degradation or failure of

revenue-generating services

Database issues—Issues related to the integrity of network element

databases

Billing issues—Issues related to data and reporting for billing

Statistics issues—Issues related to data and reporting for performancemanagement

Note There may be instances where no solution has been identified. In those

cases, a notation will be made in that category. If or when information

becomes available, the category will be updated at a future date.

Restricted Access Some solutions that are presented in this manual may require access that is

restricted by Motorola. Contact the iDEN Customer Network Resolution

Center (CNRC) for assistance at:

US/Canada

+1-800-499-6477

All other International locations:

1-847-704-9800



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EBTS Subsystem Troubleshooting Overview


1-4 6881012Y79-B 23-Feb-09

Note Toll-free international access codes are available for many locations.

Please refer to Appendix E of the Customer Guide to iDEN Customer

Network Resolution Center (WP2000-003) for a list of these access

codes and dialing instructions.

Target Audience The information in this manual is designed to enhance the user’s ability to

troubleshoot the EBTS subsystem. Tasks and procedures included should be

performed by senior support personnel who are actively involved in the day-

to-day technical activities required to maintain system functionality.



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Overview

Recommended Training


23-Feb-09 6881012Y79-B 1-5

Recommended Training 1

To maximize the effectiveness of this manual, it is strongly recommended that

the user complete the applicable Motorola-offered training courses prior to

performing the tasks presented.

For information related to your system release level, review the iDEN

Training Course Catalog which is available on the MyNetworkSupport web

site. To access it, follow the steps below.

Contact your local training coordinator for course enrollment information.

For questions on iDEN training, please call 847-576-2750.

TO Access the iDEN Technical Training Course Catalog

Step Action

1 Login to MyNetworkSupport at:https://mynetworksupport.motorola.com/

The MyQuickLinks screen appears.2 Scroll down to the section for iDEN technology.

3 On the right side of the page, click on “iDEN Training Catalog”.



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Overview

EBTS Subsystem Description


1-6 6881012Y79-B 23-Feb-09

EBTS Subsystem Description 1

Introduction The iDEN communications system encompasses a range of services that

deliver two-way radio communications, interconnect to wireline phone

service, mobile-to-mobile subscriber service and access to the Internet.

This troubleshooting guide focuses on the base station equipment that is

shared by Push-to-Talk two-way mobile service, interconnect service, and

packet data services. Figure 1-1 iDEN System Diagram on page 1-6 shows

the relationship of the EBTS subsystem to the rest of the iDEN system.

Figure 1-1 iDEN System Diagram



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Overview



23-Feb-09 6881012Y79-B 1-7

EBTS Subsystem Components 1

The EBTS subsystem provides the RF interface for the mobile subscribers

(MSs) as well as the T1/E1 serial data interface between the iDEN central

network that provides dispatch, interconnect, and packet data services.

All EBTS sites connect, via T1/E1 span lines, to the Digital Cross-connectSwitch (DCS) at the central network. The DCS routes control and MS call

traffic signals between the EBTS and the appropriate service subsystem.

In the iDEN system, the base station radios and associated control equipment

are contained in the EBTS or, more commonly, cell sites.

The EBTS site consists of the following components:

An Access Control Gateway (ACG), which uses the integrated Site

Controller (iSC) platform. Redundant ACGs/iSCs are usually equipped at

an EBTS site.

iDEN Monitor Unit/Environmental Alarm System (iMU/EAS) One or more Base Radios (BRs)

An RF Distribution System (RFDS)

Access ControlGateway

The Access Control Gateway (ACG) is the site controller and the communica-

tions gateway between an EBTS site and the central network. The ACG uses

either of two integrated Site Controller (iSC) platforms:

iSC3 - current platform

iSC2 - not available in new EBTS shipments, but still used in the field

The iSC discriminates between Dispatch, Interconnect and Packet Data calls

and routes the traffic accordingly. It also controls base radio timing and termi-

nates transport facilities. Network infrastructure facilities (T1/E1s) are termi-

nated at the iSC.

The iSC2 supports a maximum of 18 RF carriers in a site. Maximum capacity

is further derated if Split 3:1 and WiDEN features are enabled by an

additional three RF carriers for each feature.

The iSC3 can support a maximum of 36 carriers when configured for two

T1’s or two E1’s.

When the EBTS is configured as an omni site, the iSC3 supports up to 20carriers. When the EBTS is configured as a 3-sector site, the iSC3 can

support up to 36 carriers, with a maximum of 20 carriers in any one sector.

Two ACGs/iSCs are recommended for redundant operation. These units are

software switchable (active-standby). Communication between the master

(active) and standby is initiated by the active controller. This redundancy

reduces maintenance and downtime in the event of an EBTS failure.



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Overview



1-8 6881012Y79-B 23-Feb-09

The ACG/iSC allows an OMC-R operator to: perform tests to isolate faults

between the EBTS and the facilities (T1/E1), load new software, and remotely

switch over to the standby ACG.

(Refer to Figure 1-3 ACG/iSC and iMU/EAS Block Diagram on page 1-15.)

The ACG/iSC has the following interfaces: Site Timing Reference - consisting of a Global Positioning System (GPS)

Receiver (GPSR) and High Stability Oscillator (HSO).

The HSO is frequency locked/synchronized to the GPS timing signals

output by the GPSR. The ACG/iSC derives a 5MHz/1PPS timing reference

signal from the HSO.

The 5MHz/1PPS output signal is distributed to all BRs at the EBTS site. All

BR RF local oscillators synchronize to the 5MHz/1PPS timing reference

signal.

Serial/parallel Data I/O interface - supports data communication between

the ACG/iSC and the iMU/EAS.

T1/E1 span line interface - provides PCM serial data channels/time slots

that carry control and call traffic between the EBTS and the central

network.

10Base2 (thinnet) Ethernet Local Area Network (LAN) interface - provides

data communication between ACG/iSC and the site BRs. This data

communication includes:

ACG/iSC sending BR control information and receiving BR alarm/

status information

ACG/iSC downloading code to the BRs

MS call traffic routing between ACG/iSC and the BRs

Note The ACG/iSC has an internal interface between the T1/E1 transportand the Ethernet LAN that supports routing of MS traffic signals

between the central network and the BRs.

Refer to white paper EBTS Backhaul: Frame Relay DS0 Requirements

(WP2002-025), for information about configuring dual T1’s and E1’s. Refer

to white paper Managing AFR QoS (WP07004) for a list of the EBTS

statistics.



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Overview



23-Feb-09 6881012Y79-B 1-9

iDEN Monitor Unit/Environmental Alarm System

(Refer to Figure 1-3 ACG/iSC and iMU/EAS Block Diagram on page 1-15.)

The iDEN Monitor Unit/Environmental Alarm System (iMU/EAS) contains

the Environmental Alarm System (EAS). The iMU/EAS monitors the EBTS

site for alarms and reports them to the ACG which forwards them to the

OMC-R. Also the ACG/iSC and BR status/alarm information that is collected by the ACG/iSC is applied to the iMU/EAS for reporting to the OMC-R.

Base Radio (Refer to Figure 1-4 BR Block Diagram on page 1-16.)

The EBTS provides the Radio Frequency (RF) link between the land network

and the MSs. The Base Radios (BRs) perform the RF communications with

the MSs, sending both the control information and the compressed speech

over a radio channel. The radio channel consists of a 25 KHz TX and RX

carrier.

A Base Radio (BR) can be removed from the EBTS and replaced with a new

BR without taking the site off the air. The base radios and the radio link traffic

(voice and data) are controlled by the ACG/iSC over the Ethernet LAN.

BRs are either single channel units that provide a single 25 KHz RF carrier in

one physical unit or QUAD Channel BR that supports up to four 25 KHz RF

carriers in one physical unit. The QUAD BR can be software-configured from

the OMC-R for 1 to 4 carriers.

The single-channel BR provides reliable digital base radio capabilities in a

compact software-controlled design. Increased channel capacity is provided

through voice compression techniques and Time Division Multiplexing(TDM). This mode, combined with voice compression techniques, provides

an increased channel capacity ratio of as much as 6 to 1. Both the receive and

transmit signals of the Base Radio are divided into 6 individual time slots.

Each receive slot has a corresponding transmit slot; this pair of slots

comprises a logical 25 KHz RF channel.

Each BR consists of the following components:

The Base Radio's DC Power Supply is capable of operating with input

voltages within the range of –41 V DC to –60V DC. The DC Power Supply

converts the –48V DC input to 28.6V DC, 14.2V DC, and 5.1V DC. These

voltages are distributed to the other Base Radio modules through the

backplane

Base Radio Controller (BRC) - controls the BR RF transmitter (TX) and

receiver (RX). The BRC has a 10Base2 Ethernet interface for

communication with the ACG/iSC

Exciter - provides low level TX RF output signal to drive the RF Power

Amplifier



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Overview



1-10 6881012Y79-B 23-Feb-09

RF Power Amplifier (PA) - amplifies the low level TX RF signal from the

exciter. The RF PA provides the final TX RF power output to the RFDS and

TX antenna

Receiver - contains three receivers that provide RX antenna diversity

Quad Base Radio The Quad Base Radio provides efficient use of the frequency spectrum by

transmitting four 25 kHz channels over a 100 kHz wide band. Each Quad BR

can be remotely configured from the OMC-R for 1, 2, 3, or 4 RF carriers.

Since the Quad BR digitally combines four carriers internally, it eliminates

the need for high-loss external combiners. This results in a significant

reduction in transmit power losses.

The Quad BR can operate in either the 800 MHz or 900 MHz band.

Features

Four 25 kHz RF carriers in a single BR (must be contiguous channels) Can be remotely configured for 1,2,3 or 4 carriers

Four 3x Receiver modules per Base Radio.

800 and 900 MHz Quad BRs can share the same antenna using a Diplexer.

The EBTS, using Quad BRs, can potentially be configured for 36 RF

carriers without any additional combining hardware. The iSC3 is required

to support 36 RF Carriers.

Limitations

PCCH Reassignment is only available if the PCCH BR and the redundant

BR are configured for the same number of RF carriers.

For example, if a Quad BR carrying the PCCH fails, the PCCH will be

reassigned only to another Quad BR configured with the same number of

carriers. If there is no other Quad BR with the same carrier configuration,

the cell will be out of service.

Quad BR must be configured for contiguous frequencies

The Quad BR requires RF carriers to be allocated with adjacent 25 kHz

channels. These adjacent channels must also be deployed in all co-channel

sites. It will require frequency reuse patterns to be re-drawn and systemwide retunes.



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Overview



23-Feb-09 6881012Y79-B 1-11

Adjacent channel interference

Adjacent channel interference results from interference between two or

more channels due to splatter effects. A strong uplink signal from a close in

subscriber can interfere with adjacent channels that are on the outer limits

of the cell’s coverage area. Subscriber software changes provide additional

power cutback.

Quad2 Base Radio The dual band Quad2 BR provides the flexibility to change operating

frequency bands simply by changing the operating frequency in the site

configuration file without the need to replace the base radio. The dual band

Quad2 BR is functionally the same as the Quad BR with the exception that it

can be software configured for either 800 or 900 MHz band.

The dual band Quad2 BR hardware supports up to 6 iDEN carriers. However,

the call processing software limits the Quad2 BR to a maximum of 4 RF

carriers. The dual band Quad2 BR uses the same air interface and FNEinterface protocols as Quad BR. When configured to operate in the 900 MHz

band, the dual band Quad2 BR will support all the services that are currently

supported on the 900 MHz band, i.e. telephone interconnect, circuit data etc.

The dual band Quad2 BR defaults to the 800 MHz unless explicitly told

otherwise through the use of a new test application MMI command.

The ACG validates the BR type and band based upon cabinet and position.

For all configuration errors it will report an alarm to the OMC-R. The dual

band Quad2 BR interfaces with the ACG via the back panel 10Base2 Ethernet

link and follow the existing ACG -BRC procedures and message interfaces.

The dual band Quad2 BR provides a local console interface similar to QuadBR.

Physically, the Quad2 BR is significantly different than the other iDEN BR

platforms. A transceiver module integrates the functionality of the base radio

controller, exciter, and receiver modules. The power supply and PA are also

significantly different. The Quad2 BR is smaller (3 rack units compared to 5

RUs for the legacy BRs) and lighter (approximately 45 pounds).

The Quad2 Base Radio is shown below:



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Overview



1-12 6881012Y79-B 23-Feb-09

Figure 1-2 Quad2 Base Radio

Refer to the EBTS Base Radios - Volume 2 - Enhanced Base Transceiver

System (EBTS) - Volume 2 of 3 (68P80801E35) for information related to the

operating characteristics of the BR, Quad, and Quad2.



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Overview



23-Feb-09 6881012Y79-B 1-13

RF Distribut ionSystem

The EBTS site antennas provide the means for radiation and reception of the

RF energy that is the Radio Link.

The EBTS site antenna configurations will vary with each installation. Each

EBTS cell requires RF antennas for TX and RX signals. Site antenna configu-

rations include three RX antennas for each omni or sector RF coverage area.Sites may be configured with a separate TX antenna for each omni or sector

RF coverage area, but typically the site antennas are configured so that the TX

signals are applied to one or more of the RX antennas. Therefore a site may

have either four or three antennas for each omni or sector RF coverage area.

An RF Distribution System (RFDS) can include the following:

hybrid TX combiners

RX signal splitters/multicouplers

antenna duplexers

antenna diplexed filters for EBTS sites with 800 MHz and 900 MHz

BRs

(Refer to Figure 1-5 Duplexer RFDS Block Diagram on page 1-17).

TX Combiner

The EBTS is configured with hybrid TX combiners. The TX combiners

combine the high power TX RF carrier signals from more than one BR power

amplifier output into a single composite high power TX RF signal for appli-

cation to the antenna.

RX Signal Splitters/multicouplers

The RX RF antenna signals, from the three antennas, are applied to the RX

signal splitters/multicouplers. The splitters/multicouplers split and amplify

the RX antenna input signals into multiple outputs for each RX antenna. An

RX signal output for each of the three RX antennas is routed from the

splitters/multicouplers to the corresponding RX input of each BR.

Antenna Duplexer

The RFDS may be equipped with antenna duplexers that allow the combined

TX signal and RX signal to share a common antenna.



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Overview



1-14 6881012Y79-B 23-Feb-09

800/900 MHz Antenna Diplexer

At a dual band (800/900 MHz) EBTS site, the RFDS in one of the RF cabinets

contains three 800/900 MHz antenna diplexers. Each diplexer has a common

dual band (800/900 MHz) TX/RX antenna port, an 800 MHz TX/RX port,

and a 900 MHz TX/RX port.

The 800/900 MHz antenna diplexer allows the TX/RX signals of 800 MHz

BRs and the TX/RX signals of 900 MHz BRs to share a common antenna.

The 800/900 MHz antenna diplexer filtering is as follows:

Only 800 MHz band TX/RX signals pass between the antenna port and the

800 MHz TX/RX port.

Only 900 MHz band TX/RX signals pass between the antenna port and the

900 MHz TX/RX port.

800 MHz band TX/RX signals are isolated from the 900 MHz band RF

equipment

900 MHz band TX/RX signals are isolated from the 800 MHz band RFequipment

(Refer to Figure 1-6 Antenna Diplexer Block Diagram on page 1-18.)

EBTS SubsystemComponents BlockDiagrams

The following figures show simplified block diagrams of the EBTS

subsystem components.:

Figure 1-3 ACG/iSC and iMU/EAS Block Diagram on page 1-15

Figure 1-4 BR Block Diagram on page 1-16

Figure 1-5 Duplexer RFDS Block Diagram on page 1-17 Figure 1-6 Antenna Diplexer Block Diagram on page 1-18



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23-Feb-09 6881012Y79-B 1-15

Figure 1-3 ACG/iSC and iMU/EAS Block Diagram

1PPS

GPS Ant A

ACG/iSC A

5 MHz/1PPS

T1/E1(To/From

DCS)

10Base2(To/From

BRs)

5MHz/1PPS(To BRs)

Alarm I/O (From/ToSite, Cabinet, User

Devices)

Control &

Status/Alarm Bus

LEGEND:

Data Bus

T-connection

T1/E1

ALARM I/O

1PPS

GPS Ant B

ACG/iSCB

5 MHz/1PPS

T1/E1

10BASE2

ALARM I/O

ALARM I/O A

ALARM I/O B

iMU/EAS

SERIALLINE

INTERFACE

GPSRDPLL & SIGNAL

COMBINER

HSO

ETHERNETINTERFACE

COMMUNICATIONSPROCESSOR

ANDCONTROL &

STATUS/ALARMPROCESSOR

SERIALLINE

INTERFACE

PARALLELINTERFACE

PARALLELINTERFACE

PARALLELINTERFACE

ALARMI/O

LOGIC

GPSRDPLL & SIGNAL

COMBINER

HSO

PARALLELINTERFACE

COMMUNICATIONSPROCESSOR

ANDCONTROL &

STATUS/ALARM

PROCESSOR

ETHERNETINTERFACE

NOTE:1. DC operating power is intentionally not shown in this diagram.



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Overview



1-16 6881012Y79-B 23-Feb-09

Figure 1-4 BR Block Diagram

Diversity Receivers(Note 2)

10Base2(To/From ACG/iSC)

5MHz/1PPS(From

ACG/iSC)

10BASE2

5 MHz/1PPS

RX3 DATA & CLK

Base RadioController

(BRC)

2.4 MHz

16.8 MHz

TX DATA & CLK

LO INJ

2.4 MHz

16.8 MHz

LO INJ

RX 1

RX 2

RX 3

RX AntennaSignals

(From RFDS)

RX1 DATA & CLK

RX1 DATA & CLK

1PPS &SLOT TIMING

LO INJ

10Base2(To/From BRs)

5MHz/1PPS(To BRs)

1PPS &SLOT TIMING

DAC &FILTER/AMP

FINALRF AMPS

RF FEEDBACK

Exciter (Note 3)

Power Amplifier

TXTo Antenna(Via RFDS)

PRE-AMP& FILTER

PRE-AMP& FILTER MIXER

I-F AMPS &FILTERS

DET

PRE-AMP& FILTER MIXER

I-F AMPS &FILTERS

DET

MIXERI-F AMPS &

FILTERSDET

VCO/SYNTH

RX DSP&

ADCCOMMUNICATIONSPROCESSOR

ANDCONTROL &

STATUS/ALARMPROCESSOR

TX DSP

PLL & VCO

1PPS REF

AMP &FILTER

VCO/SYNTH

MODULATORCOMBINERPHASE

SPLITTERLINEARRF AMP

ETHERNETINTERFACE

NOTES:1. DC operating power is intentionally not shown in this diagram.2. A single channel Base Radio (BR) has one set of diversity receivers. A QUADchannel BR has four sets of diversity receivers; one set per RF channel.3. A single channel Base Radio (BR) has a separate exciter module as shown inthis diagram. A QUAD channel BR has the exciter together with the BRC inone module. The QUAD channel BR exciter contains four sets of excitercircuits; one set per RF channel.

Control &Status/Alarm Bus

LEGEND:

Data Bus

T-connection



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23-Feb-09 6881012Y79-B 1-17

Figure 1-5 Duplexer RFDS Block Diagram

RX 1

RX 2

RX 3

TXBaseRadio

RX 1

RX 2

RX 3

TXBase

Radio

RX 1

RX 2

RX 3

TXBaseRadio

RX 1

RX 2

RX 3

TXBaseRadio

RX 1

RX 2

RX 3

TXBaseRadio

RFDS

ANT 1 ANT 2 ANT 3

RX

ANT

Duplexer

TXRX

ANT

Duplexer

TXRX

ANT

Duplexer

TX

RF Combiners

TX 1 TX 2 TX 3

RF Splitters/Multicouplers

RX 1 RX 2 RX 3

NOTES:1. This diagram is for an omni antenna configuration or one sector of a sector antenna configuration.Other sectors would be similar, but with separate BRs, RFDS and antennas for each sector.2. Each omni/sector antenna configuration has three antennas for receiver antenna diversity. TX signalcombining and routing determines how the TX signals are distributed among the three antennas.3. Antenna configurations are site dependent and may vary from one site to another.



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Overview



1-18 6881012Y79-B 23-Feb-09

Figure 1-6 Antenna Diplexer Block Diagram

RX 1 RX 2 RX 3

800 MHzRFDS

ANT 1 ANT 2 ANT 3

RX

ANT

Duplexer

TXRX

ANT

Duplexer

TXRX

ANT

Duplexer

TX

RF Combiners

TX 1 TX 2 TX 3


RX 1 RX 2 RX 3

ANT

Diplexer

800

900

ANT

Diplexer

800

900

ANT

Diplexer

800

900

RX Antenna Signals(To 800 MHz BRs)

TX Output Signals(From 800 MHz BRs)

RX 1 RX 2 RX 3

900 MHzRFDS

RX

ANT

Duplexer

TXRX

ANT

Duplexer

TXRX

ANT

Duplexer

TX

RF Combiners

TX 1 TX 2 TX 3


RX 1 RX 2 RX 3

RX Antenna Signals(To 900 MHz BRs)

TX Output Signals(From 900 MHz BRs)



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23-Feb-09 6881012Y79-B 2-1

Chapter 2


In This Chapter Topic See Page

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

iDEN Open Problem List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

About MMI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Field Replaceable Units (FRU) 5

Site Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

General EBTS Troubleshooting Strategies . . . . . . . . . . . . . . 2-7

Data Collection............................................................................... 2-7

OMC Events & Alarms ...................................................... 2-7Console Logs .................................................................... 2-7T1 Tester........................................................................... 2-8

Ethernet Capture............................................................... 2-8Drive Test Application ....................................................... 2-8

EBTS Troubleshooting Resources. . . . . . . . . . . . . . . . . . . . 2-10

Operations and Maintenance Center 10

Events and Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

EBTS Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Integrated Site Controller (iSC) Indicators.................................... 2-13

iSC2 Front Panel Indicators ............................................ 2-13

iSC3 Front Panel Indicators ............................................ 2-15Base Radio (BR) Indicators.......................................................... 2-17

Single Channel BRC ....................................................... 2-17QUAD Channel Ex/BRC.................................................. 2-18

Transceiver...................................................................... 2-21Power Amplifier ............................................................... 2-21

Power Supply .................................................................. 2-21Fan Assembly.................................................................. 2-21



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Quad2 Base Radio - Front Panel LEDs and connectors.............. 2-22

Power Amplifier LEDs ..................................................... 2-22Transceiver LEDs and connectors .................................. 2-23

iDEN Monitor Unit (iMU/EAS) Indicators...................................... 2-24

iMU Front Panel Indicators.............................................. 2-24

EAS Front Panel Indicators ............................................. 2-25

EAS2 Front Panel Indicators ........................................... 2-25

R-2660 iDEN Test Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

Base Radio Tests......................................................................... 2-27

Base Radio BER Floor and Sensitivity Verification ......... 2-27

Drive Test Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

Site Performance Testing using Drive Test Application ............... 2-29

Alarm Traps to the OMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Alarm Severity.............................................................................. 2-30

Alarm Severity Filter .................................................................... 2-30

Alarm Traps — Message Content................................................ 2-31

ACG Links. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

ACG Physical Links...................................................................... 2-32

ACG Reliable Logical Links.......................................................... 2-32

Communication Link Failures. . . . . . . . . . . . . . . . . . . . . . . . 2-33

Types of Links .............................................................................. 2-33

Physical Links.................................................................. 2-33ACG Reliable Logical Links ............................................. 2-33

ACG Fault Recovery .................................................................... 2-33

Base Radio Failure.......................................................... 2-33

Recovery from PCCH Base Radio Failures . . . . . . . . . . . . . 2-34

BR Supporting PCCH Fails .......................................................... 2-34

Recovery from ACG Failures . . . . . . . . . . . . . . . . . . . . . . . . 2-35

ACG Failure Recovery ................................................................. 2-35

Base Radio Controller States . . . . . . . . . . . . . . . . . . . . . . . 2-36

General State Definitions ............................................................. 2-36

Base Radio Controller (BRC) States . . . . . . . . . . . . . . . . . . 2-37

State Management within the ACG.............................................. 2-38

Troubleshooting RF-related Problems . . . . . . . . . . . . . . . . 2-40

EBTS Equipment-related Problems . . . . . . . . . . . . . . . . . . . 2-41



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Introduction


23-Feb-09 6881012Y79-B 2-3

Introduction 2

This chapter provides overall strategies for troubleshooting the Enhanced

Base Transceiver System.

The information present here presumes that the reader has attended the iDENSystem School and EBTS Operations and Maintenance training classes and is

knowledgeable of the troubleshooting methodologies taught in those classes.



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iDEN Open Problem List


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iDEN Open Problem List 2

The iDEN Open Problem List (OPL) is a living document (Excel spreadsheet)

that is updated monthly. It lists the current, known software issues that are

related to bugs identified in System Releases (SRs) and/or patches along with

their workaround(s), if applicable. If the issue has been closed, i.e., resolvedwith a deployed patch or new SR, the issue is noted as CLOSED.

It is recommended that you review this list on a monthly basis to obtain

workarounds to current issues you might encounter.

The iDEN Open Problem List is available on My Network Support. To locate

it, use the “Advanced Search” function on My Network Support by typing

*opl* in the “Part Number” text box.



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About MMI Commands


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About MMI Commands 2

Service technicians can communicate with the EBTS through the use of Man

Machine Interface (MMI) commands and a service computer. MMI

commands provide testing capabilities with access to alarm log files and

various diagnostic tests. MMI commands also provide a means to configurethe Site Control and RF Cabinets for various system tests.

Commonly used MMI commands pertaining to Base Radios are located in

Chapter 6 of the EBTS Volume 1 of 3 System Installation and Testing manual

(68P80801E35). All valid commands are described, along with the syntax,

definitions, and examples.

For a complete description of all MMI commands pertaining to the iSC, refer

to the following applicable iSC manual:

For iSC2, iDEN Integrated Site Controller System Manual (68P81098E05)

For iSC3, iDEN Gen 3 Site Controller System Manual (68P80801E30)

Field Replaceable Units (FRU) 2

For a guide to isolating failures to a Field Replaceable Unit (FRU), refer to

Chapter 7 in the EBTS Volume 1 of 3 System Installation and Testing manual

(68P80801E35).

EBTS Volume 2 of 3 Base Radios manual (68P80801E35) contains instruc-

tions for isolating Base Radio failures to the FRU level.

EBTS Volume 3 of 3 RF Distribution Systems manual (68P80801E35)

contains information that will aid in replacing RFDS FRUs.



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Site Maintenance


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Site Maintenance 2

EBTS sites are built to specific mechanical and electrical standards that

support proper and reliable operation of EBTS equipment. EBTS site design

considerations include desired radio coverage, potential RF interference,

future site expansion, connectivity and power, site environment, local climate,accessibility, and security. These sites initially serve the application well, but

may degrade over time due to a number of factors such as excessive

equipment population, excessive electrical loads, inadequate HVAC (Heating

Ventilation Air Conditioning) capacity, insufficient floor loading strength,

degraded grounding systems, unreliable T1 circuits, defective or compro-

mised antenna systems, and perhaps encroachment by others. While there is

considerable customer involvement with initial site development, oftentimes a

long-term maintenance and inspection program is overlooked.

To establish a program of preventative maintenance a review of the Motorola

White Paper, iDEN EBTS Total Site Maintenance (WP2001-010), is recom-

mended.

This document is intended to point out commonplace areas of failure in aging

EBTS sites and to recommend solutions. The service technician and site

manager must both remain proactive in inspecting EBTS sites and investi-

gating even the smallest problem that can become a service-affecting catas-

trophe if left uncorrected. Even if the EBTS site itself remains unchanged

over time, the operating environment around the site may have changed

enough to seriously degrade site performance.



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General EBTS Troubleshooting Strategies


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General EBTS Troubleshooting Strategies 2

When troubleshooting the EBTS it is important to isolate the root cause using

a systematic approach.

Determine which services are affected: Interconnect, Dispatch, Packet

Data, or all three.

Determine which sites may be serving the unit(s) with the problem.

Determine if other units in the area are also experiencing the problem.

Determine if the issue is a hardware problem or software problem.

Download the test bed with the datafill parameters for the faulty site. If

the test bed experiences the same symptoms, check the datafill

parameters for incorrect values.

Drive test the affected area and collect site data.

Data Collection Data collection is needed whenever a problem is to be escalated to Motorola.

The supporting data listed below can be very helpful in determining the cause

of the problem. Although more data collection may be required in some cases

with special debug mode on the EBTS to provide a better understanding of the

issue. The following are the recommended data collection methods:

OMC Events & Alarms

OMC event logs are the first recommended data to be investigated/

collected. By cross-referencing the EBTS, ACG, and BR events and alarms

with the ASCE (Alarm & State Change Events) documentation for the

applicable Software Release (SR), the site engineers can determine thestatus and history of the site equipment. Also information regarding GPS

and other hardware, referenced in this troubleshooting guide, makes use of

OMC event logs.

Note Refer to SR16.0 Alarm & State Change Events documentation,

ASCE16.

The OMC operator can provide Event and Alarm information about the site.

equipment

Console Logs

The ACGs/iSCs and BRCs are equipped with a console port MMI (ManMachine Interface) that can be connected to a service computer (i.e., PC).

A non-intrusive set of MMI commands are available on the BRC that will

help the service technician to isolate faults within the EBTS while the

EBTS is processing calls. There is also a set of iSC MMI commands

available, but not while the EBTS is processing calls.



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2-8 6881012Y79-B 23-Feb-09

Although console log information is not documented and supported by

Motorola, it may provide some insight as to the internal status of the ACG

software and error messages when the problem/issue happens.

To capture ACG console logs, a service computer must be directly

connected to the console port on the Active ACG/iSC when the problem/

issue happens.

The service computer must be configured as follows:

Procomm or terminal emulation software that supports serial com

connection.

VT100 emulation

COM1 for com port

19200 Baud Rate

None for Parity Bit

8 for data bits

1 for stop bit

Once the connection is established, messages will be displayed on theservice computer. Start the screen capture and save to a file.

T1 Tester

The T1 tester is used to verify the quality of the T1 circuit and identify

errors on the T1 lines.

Ethernet Capture

Ethernet communication between the ACG/iSC and the BRs can provide

information including voice and control messages. Refer to Installing and

Using Ethereal to Capture EBTS Traces (WP06004A).

Drive Test Application

The drive test application software runs on a PC laptop. The PC I/O

interface is cabled to an iDEN “Test Mobile” radio. The drive test

application software in conjunction with the “Test Mobile” radio collects

and displays iDEN RF interface data. This data can be used to optimize the

network, resolve coverage issues, and monitor handover performance.

The drive test application trace can be a good information source for to

understand what the subscriber unit receives from the EBTS site radio

interface. Refer to the drive test application software documentation foroperation and configuration of the drive test application trace. For more

information about using a drive test application, refer to the Drive Test Data

Collection and Analysis (WP2003-008).

EBTS Site Indicators and Equipment Manuals

The LEDs in the Control and RF cabinets can be invaluable to the service

technician in isolating the faults within the EBTS. Refer to the

troubleshooting sections of the equipment manuals for assistance in



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23-Feb-09 6881012Y79-B 2-9

isolating the failure whenever any front panel indicators are illuminated.

See Table 1 Supplemental Publications on page -xiv for a list of manual

titles and part numbers.

R-2660 iDEN Test Set

The Motorola R-26

iden ebts subsystem troubleshooting guide

Documents