AT&T MERLIN LEGEND ® Communications System Basic Rate interface Supplemental Reference
Copyright © 1994, AT&T All Rights Reserved Printed in U.S.A. AT&T 555-601-111 Issue 1 October 1994 Notice Every effort was made to ensure that the information in this book was complete and accurate at the time of printing. However, information is subject to change. See Appendix B, “Customer Support Information,” for important information.
Contents About this Book ■ ■ ■ ■ Intended Audience Conventions Used Related Documents How to Comment on This Document xi xi xii xiv Overview ■ ■ ■ ■ ■ ■ ■ Introduction ISDN and BRI System Overview Applications Modes of Operation Call Handling BRI Features 1-2 1-3 1-4 1-8 1-10 1-11 1-14 Equipment and Operation ■ Equipment Requirements for MERLIN LEGEND BRI System ■ 800 CO-BRI Module ■ Installation of Equipment ■ Upgrading the MERLIN LEGEND System ■ Telephones ■ Adjuncts ■ Applications 2-2 2-3 2-7 2-9
Contents Planning ■ Planning Overview ■ System Planning Forms ■ Control Unit Planning ■ Line Connections ■ Line Options ■ Assigning Telephone Buttons ■ Features 4-1 4-2 4-5 4-7 4-8 4-16 4-17 System Programming ■ Basic Programming Considerations ■ Service Profile Identifier (SPID) ■ Clock Synchronization ■ BRI Timers ■ BRI Access Button ■ System Programming Reports 5-2 5-3 5-6 5-10 5-13 5-19 Maintenance ■ BRI Maintenance ■ Accessing Maintenance Screens ■ Demand Tests ■ BRI Module and Clock Synchronizatio
Contents A Planning Forms A-1 B Customer Support Information B-1 AB Abbreviations AB-I GL Glossary GL-1 IN Index IN-I
Figures Overview 1-1 1-2 1-3 1-4 1-5 MERLIN LEGEND BRI Capabilities PRI VS. BRI 800 CO-BRI Module Directory Number Mapping Placement of BRI Access Button on an MLX Telephone 1-2 1-3 1-5 1-6 1-7 Equipment and Operation 2-1 2-2 2-3 2-4 800 CO-BRI Module LEDs on an 800 CO-BRI Module Installing the 800 CO-BRI Module Installing the 2.
Tables Equipment and Operation 2-1 2-2 2-3 2-4 800 CO-BRI Module Specifications 800 CO-BRI Module LEDs Pin Assignments for 8-Position Jack on an 800 CO-BRI Module 800 CO-BRI Module LEDs 2-3 2-5 2-6 2-5 Planning 4-1 System Planning Forms Needed for BRI Planning 4-2 Timers 4-3 4-12 System Programming 5-1 BRI Timer Settings 5-2 Timers 5-3 5-12 Maintenance 6-1 Error Conditions 6-2 BRI Error Messages 6-19 6-24
Safety The exclamation point in an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. IMPORTANT SAFETY INSTRUCTIONS When installing telephone equipment, always follow basic safety precautions to reduce the risk of fire, electrical shock, and injury to persons, including: Read and understand all instructions. Follow all warnings and instructions marked on or packed with the product.
Safety Do not attach the power supply cord to building surfaces. Do not allow anything to rest on the power cord. Do not locate this product where the cord will be abused by persons walking on it. Slots and openings in the module housings are provided for ventilation. To protect this equipment from overheating, do not block these openings.
About This Book This document is a supplement to the standard documentation for the MERLIN LEGEND® Communications System and provides the user with information specific to the use of a MERLIN LEGEND Basic Rate Interface (BRI) system. This information includes the equipment, features, programming procedures, planning procedures, and maintenance procedures that differ from the standard MERLIN LEGEND system.
About This Book If you press the Feature button on an MLX display telephone, the display lists telephone features you can select. A programmed Auto Dial button gives you instant access to an inside or outside number. The names of fixed-feature, factoryimprinted buttons appear in bold. The names of programmed buttons are printed as regular text. Choose Ext Prog from the display screen. Plain constant-width type indicates text that appears on the telephone display or PC screen.
About This Book Related Documents in addition to this book, the documents listed below are part of the documentation set. Within the continental United States, these documents can be ordered from the GBCS Publications Fulfillment Center by calling 1-800-457-1235.
About This Book Document ST-21 29-72 ST-2129-73 ST-2130-88 ST-2130-89 555-620-140 555-620-141 555-620-142 555-620-143 555-620-144 I Title Software-Linked Information Products Vistium PV 1200 Installation Guide Vistium PV 1200 User’s Guide Vistium PV 1300 Installation Guide Vistium PV 1300 User’s Guide Documentation for Qualified Technicians Installation, Programming, & Maintenance (lP&M) Binder (consists of 555-620-141, 555-620-142, 555-620-143, and 555-620-144 Installation System Programming & Maintena
FEEDBACK FORM MERLIN LEGEND® BRI Communications System Title: MERLIN LEGEND BRI Communications System Supplemental Reference Order No.: 555-601-111 Date: October 1994 1. Please rate the effectiveness of this book in the following areas: Ease of Use Fair Good Excellent I ! Poor Not Applicable ! Clarity Completeness Accuracy Organization Amearance Examples Illustrations Overall Satisfaction 2.
Overview This chapter introduces the MERLIN LEGEND® BRI Communications System. In addition to a short discussion of Integrated Services Digital Network (ISDN) and Basic Rate Interface (BRI), the chapter covers the basic hardware and software requirements and the functions and features of the system. Also included are brief descriptions of the BRI features supported by the MERLIN LEGEND BRI system.
Overview Introduction To obtain faster rates and precise data, equipment must be able to transmit digitally. Like Primary Rate Interface (PRI), BRI is a standard protocol for accessing Integrated Services Digital Network (ISDN) services. By using BRI, the MERLIN LEGEND Communications System can connect with the speed and accuracy of ISDN services. BRI lines offer the capability of voice, high-speed data, local area network (LAN) interconnection, and video transmission (see Figure 1-1).
Overview ISDN and BRI To understand the BRI option, the user should be familiar with the Integrated Services Digital Network (ISDN) and the Basic Rate Interface (BRI). ISDN The Integrated Services Digital Network (ISDN) is a digital network interface used worldwide for the transmission of voice, data, video, and other services simultaneously over standard telephone wires. It is the leading standard in the world for digital transmission.
Overview System Overview A MERLIN LEGEND BRI system has specific requirements and components different from a standard MERLIN LEGEND system. Hardware and Software Requirements A MERLIN LEGEND system must have an 800 CO-BRI module to connect to BRI facilities. This module is the interface that connects BRI lines from a 5ESS® G8 central office to the MERLIN LEGEND system. In addition, the Processor module must contain the 2. B Feature module.
Overview Also at the time of subscription, the type of terminal configuration, in this case Type D, is specified. Although the 5ESS Generic 8 Custom (5E8) software supports two types of services over BRI lines (Point-to-Point and Point-toMultipoint), the MERLIN LEGEND system only supports Point-to-Multipoint. 800 CO-BRI Module The 800 CO-BRI (Central Office-Basic Rate Interface) module is the MERLIN LEGEND system interface to BRI lines from the central office.
Overview Each BRI line, called a Digital Subscriber Line (DSL), coming into the MERLIN LEGEND system contains two Directory Numbers (DNs), one for each Bchannel. Usually the Directory Number is the number that is dialed to reach the destination. The MERLIN LEGEND system maps the Directory Number (DN) to a line number in the Dial Plan. For example, if the 800 CO-BRI module is the first module in the system, DN1 is mapped to Line 801, the first line in the MERLIN LEGEND system.
O v e r v i e w BRI Access Button The BRI Access button is a button programmed on the telephone console in the same way as a System Access or Intercom button. The BRI Access button is used to initiate a CO Transfer and to identify the last BRI line that placed or received a call.
Overview Applications The MERLIN LEGEND BRI system supports almost all of the applications supported by a standard MERLIN LEGEND system. These applications include: AT&T Attendant DOS Call Accounting System (CAS) CAS for Windows Call Accounting Terminal (CAT) Call Management System (CMS) Conversant Voice Information Systems (CVIS) INTRO HackerTracker™ System Integrated Solution II Release 1.0 - Integrated Voice Power Automated Attendant Release 1.1 - AUDIX™ Voice Power (AVP) 2.
Overview Integrated Solution Ill AUDIX Voice Power (AVP) Release 2.1.1 AT&T FAX Attendant™ System (FA) Release 2.1.1 — MERLIN LEGEND Integrated Solution Call Accounting System (CAS) Release 1.0 System Programming and Maintenance (SPM) Release 3.18 – Integrated Administration MERLIN Identifier MERLIN MAIL™ MERLIN MAIL Multi-Lingual Release PassageWay™ NOTE: PassageWay Release 1.0 does not recognize the BRI Access button. Release 2.0 is recommended.
Overview Modes of Operation The MERLIN LEGEND BRI system operates in Key mode and, with limitations, in Hybrid/PBX mode. Behind Switch mode is not supported. Key Mode The MERLIN LEGEND BRI system was developed primarily to work in Key mode. Consequently, it functions fully in Key mode with the following exception: BRI lines will not default on stations or Direct Line Consoles (DLCs). They must be assigned during system programming.
Overview Call Handling Placing and receiving calls on a BRI line is the same as placing and receiving calls on loop-start or ground-start lines. Making BRI digital data calls is the same as making Primary Rate Interface (PRI) digital data calls. Incoming Calls An incoming call to a BRI line can terminate on Personal Line buttons, Direct Pool Termination (DPT) buttons, Calling Groups, and the Queued Call Console (QCC) queue.
Overview Conference Calls on BRI lines can be part of a conference call, but the conference is processed by the MERLIN LEGEND system, not by the 5ESS central office (CO). The MERLIN LEGEND system determines the number of active parties on the call. Like a standard MERLIN LEGEND system, the MERLIN LEGEND BRI system supports up to five people on a conference: two within the system, two outside the system, and the call originator.
Overview Recall Recall is not recognized by the 5ESS central office (CO) on BRI lines. Therefore, pressing the recall button on a telephone is ignored by the CO. Remote Access BRI lines can be programmed to use the Remote Access feature.
Overview BRI Features By using Basic Rate Interface (BRI) lines, the MERLIN LEGEND system can use features offered by the 5ESS central office. The BRI features described below are supported by the MERLIN LEGEND system. The Multi-Level Precedence and Preemption (MLPP) feature can be used only on a private configured network and, therefore, is used primarily by the Federal Government. NOTE: All BRI features are ordered from the central office (CO) at the time of subscription for BRI lines.
Overview CO Transfer When a BRI call comes in from the 5ESS central office (CO) and the user needs to transfer the call back outside the MERLIN LEGEND system, he or she can press the Transfer button, press the BRI Access button, and then dial the destination station, The user presses the Transfer button again to complete the transfer or hangs up. Once the transfer is complete, the BRI line to the MERLIN LEGEND system is free for additional call handling.
Overview Customer Originated Trace The Customer Originated Trace feature allows a user to trace the origin of the last call received on a given BRI line. This information is stored at the 5ESS CO. To retrieve it, the user must contact a CO representative. NOTE: Use of the Customer Originated Trace feature depends upon the practices of the local law-enforcement agencies. The local telephone company should be contacted for details on the availability and use of this feature.
Equipment and Operation This chapter describes the hardware used in and with the MERLIN LEGEND BRI system and outlines the procedures for installation. Except as noted, a MERLIN LEGEND BRI system supports the same telephones and adjuncts as a standard MERLIN LEGEND Communications System.
Equipment and Operation Equipment Requirements for a MERLIN LEGEND BRI System The hardware unique to a MERLIN LEGEND BRI system consists of: ■ 800 CO-BRI module ■ Feature module with 2.B software If the entire MERLIN LEGEND BRI system is purchased new, the Feature module is already placed in the new Processor module. For procedures for installing a BRI module, refer to the section “installation of Equipment. ” If the existing MERLIN LEGEND system is being upgraded to a MERLIN LEGEND BRI system, the 2.
Equipment and Operation 800 CO-BRI Module The 800 CO-BRI module serves as the Integrated Services Digital Network (ISDN) Basic Rate, two-wire U-interface between the MERLIN LEGEND system and the central office (CO) Basic Rate Interface (BRI) lines (see Figure 2-1). The 800 CO-BRI module consists of eight ports. Each port supports a BRI line (also called a Digital Subscriber Line or DSL).
Equipment and Operation Figure 2-1.
Equipment and Operation Red, green, and yellow LEDs indicate the status of the module (see Table 2-2): ■ A lit red LED indicates an active alarm on one or more of the eight active Digital Subscriber Lines (DSLs), or indicates that the module is out of service. ■ A lit green LED indicates the module is in a test condition. ■ A lit yellow LED indicates an active call on the module. Table 2-2.
Equipment and Operation Wiring the 800 CO-BRI Module The wiring running from the network interface to the 800 CO-BRI module is the same as that for other line modules, which is usually a D8W cord. However, this depends upon the network interface used. See the MERLIN LEGEND Communications System Installation manual (555-620-1 41) for complete information. As mentioned, the 800 CO-BRI module is a two-wire interface. This means that the interface operates on two-wire, twisted-pair cables of mixed gauges.
Equipment and Operation Installation of Equipment As previously discussed, the hardware for a MERLIN LEGEND BRI system consists of an 800 CO-BRI module and a 2.B Feature module. If the entire MERLIN LEGEND BRI system is new, the Feature module is already installed in the Processor module. If the MERLIN LEGEND system is being upgraded to a MERLIN LEGEND BRI system, the old Feature module must be replaced with the 2.B Feature module.
Equipment and Operation Figure 2-3. Installing the 800 CO-BRI Module NOTE: If the module is difficult to install, check it for alignment problems. Inspect the carrier for damage. If no damage is present, the module should snap into place. If the carrier is damaged, it should be replaced. Contact your authorized representative for a replacement carrier.
Equipment and Operation Upgrading the MERLIN LEGEND System If you presently have a MERLIN LEGEND system, you need to upgrade your system.
Equipment and Operation c. Unplug any auxiliary power units. Because the power supply modules are already off, the sequence for removing auxiliary power cords is not important. 2. Remove the Processor module from the carrier. a. Press up on the tab on the bottom of the module. b. Pull the bottom of the module away from the carrier. c. Lift upward to disengage the module from the rod on the top of the carrier. 3. Lay the Processor module on its left side. 4.
Equipment and Operation Figure 2-4. Installing the 2.
Equipment and Operation Upgrading System Software To upgrade your system software: ■ If the system software you backed up is prior to MERLIN LEGEND Release 2.0, you need to upgrade to MERLIN LEGEND 2.B software. Run the Convert feature of the SPM utility, version 3.18, to upgrade Release 1.xx software translations for system programming to Release 2.0. Complete steps 1 and 2. ■ If you are installing a new MERLIN LEGEND system, Release 2.0 or later, complete this procedure: 1.
Equipment and Operation Telephones The MERLIN LEGEND BRI system supports the same telephones as a MERLIN LEGEND Communications System without BRI with the following exceptions: Analog multiline telephones cannot receive Calling Party Number/Billing Number information on their displays. A single-line telephone cannot have a BRI Access button, and therefore, cannot initiate a CO Transfer of a call.
Equipment and Operation , , Adjuncts The following adjuncts cannot be connected to a port on the 800 CO-BRI module: ■ Universal Paging Access Module (UPAM) ■ Loudspeaker paging equipment ■ Music-On-Hold™ ■ 2-14 Adjuncts (MOH) software Maintenance alarm
Equipment and Operation Applications Applications that run on other releases of the MERLIN LEGEND system run on a system with an 800 CO-BRI module. Exceptions are: ■ Applications connected to Voice Messaging Interface (VMI) ports cannot access the CO Transfer feature because CO Transfer requires the use of a BRI Access button. However, BRI lines are still terminated at these locations and can be answered.
Features In addition to the standard features offered by other releases of the MERLIN LEGEND Communications Systems, the MERLIN LEGEND BRI system offers the ability to subscribe to several special Basic Rate Interface (BRI) features. Each of the BRI features is described in this chapter. Refer to the Feature Reference, (555-620-1 10), for a description of standard MERLIN LEGEND features. NOTE: Feature operation may vary in different central offices.
Features All-Call Privacy/Per-Call Privacy Description On outgoing calls, the All-Call Privacy (ACP) feature capability allows or prevents the delivery of the calling party number/billing number (CPN/BN) associated with each BRI line to the destination station. The All-Call Privacy feature should be ordered for each BRI line and specified as either activated or not activated. The Per-Call Privacy (PCP) feature is used to override the All-Call Privacy feature.
Features Feature Use All-Call Privacy Activated When the All-Call Privacy feature is activated, the calling party number/billing number (CPN/BN) for the BRI line is not sent to the destination station when a call is placed. Follow these steps to use Per-Call Privacy to override All-Call Privacy and send the CPN/BN for the BRI line for the next call only: 1.
Features All-Call Privacy Not Activated . When the All Call Privacy feature is not activated, the CPN/BN for the BRI line is sent to the destination station when a call is placed on the line. Follow these steps to use Per-Call Privacy to override All-Call Privacy and prevent the CPN/BN for the BRI line from being sent for the next call only: 1. While the handset is on-hook, press the Personal Line button or Pool button associated with the BRI line on which the All-Call Privacy feature is assigned.
Features Mode Differences In the Hybrid/PBX mode, BRI lines with different All-Call Privacy status should not be assigned to the same pool. Feature Interactions Auto Dial The feature code assigned to Per-Call Privacy by the local telephone company can be programmed on an Outside Auto Dial button. Directory The feature code assigned to Per-Call Privacy by the local telephone company can be programmed as an entry in the Personal or System Directory on an MLX-20L telephone.
Features Automatic Callback Description Automatic Callback is one of the Local Area Signaling Services (LASS) features. With the Automatic Callback feature, the user can automatically place a call to the last telephone number from which a call was received on a BRI line, even if the caller’s telephone number is not known. Automatic Callback can be activated on any multiline telephone with a Personal Line button for the BRI line on which the call was received.
Features 3. Dial the feature code assigned by the local telephone company to activate Automatic Callback. Wait for the confirmation tone (a three-burst tone) to ensure that the feature was activated correctly. The telephone number from which the last call was received on the BRI line is automatically dialed by the central office. If the telephone number being called is available, you hear ringback.
Features 4. Dial the feature code assigned by the local telephone company to activate Automatic Callback. Wait for the confirmation tone (a three-burst tone) to ensure that the feature was activated correctly. The telephone number from which the last call was received on the BRI line is automatically dialed by the central office. If the telephone number being called is available, you hear ringback.
Features Feature Interactions Auto Dial The feature code assigned to Automatic Callback by the local telephone company can be programmed on an Outside Auto Dial button. Directory The feature code assigned to Automatic Callback by the local telephone company can be programmed as an entry in the Personal or System Directory on an MLX-20L telephone. Speed Dial The feature code assigned to Automatic Callback by the local telephone company can be programmed as a System or Personal Speed Dial code.
Features Automatic Recall Description Automatic Recall is one of the Local Area Signaling Services (LASS) features. With the Automatic Recall feature, the user can automatically place a call to the last telephone number the user called from a BRI Personal Line button without manually redialing the number. NOTE: Depending on the local central office, Automatic Recall may be available under a different name and voice prompts may vary.
F e a t u r e s If the telephone number being called is busy, the central office “camps” or queues the recall attempt at the called number. When the number becomes available, the central office calls you back on the BRI line used to place the call. All telephones sharing the Personal Line button ring with a priority ring (four-burst ring for MLX telephones and three-burst ring for analog multiline telephones) to indicate the completed call.
Features If the telephone number being called is busy, the central office “camps” or queues the recall attempt at the called number. When the number becomes available, the central office calls you back on the BRI line used to place the call. All telephones sharing the Personal Line button ring with a priority ring (four-burst ring for MLX telephones and three-burst ring for analog multiline telephones) to indicate the completed call.
Features Calling Party Number/Billing Number Description The Calling Party Number/Billing Number feature allows an MLX display telephone user to see the caller’s calling party number (CPN) or billing number (BN) on the display. The CPN/BN is used by the central office to identify lines. The caller can specify if the CPN/BN should be private. NOTE: For Primary Rate Interface (PRI) users, CPN is known as the station identification (SID) number.
Features Figure 3-1. MLX Display Telephone Calling Party Number Information Telephone Differences The Calling Party Number information is shown only on MLX display telephones, and not on analog multiline display telephones or single-line telephones.
Features CO Transfer Description Similar to the MERLIN LEGEND Trunk-to-Trunk Transfer feature, the Central Office (CO) Transfer feature allows a user to transfer an outside call to an outside destination. For example, a user can connect the caller to a branch location in a distant city or can redirect a misdialed number to the correct telephone number. To use the CO Transfer feature, the user must select a new programmable button — the BRI Access button.
Features 2. Press the programmed BRI Access button, The red and green LEDs next to the BRI Access button go on. You hear dial tone. The outside caller being transferred hears silence while the call is being connected. 3. Dial the outside telephone number. NOTE: Do not use Automatic Route Selection (ARS) or pool dial-out code to dial the outside number even if the system is operating in the Hybrid/PBX mode.
Features The LEDs next to the line button of the call being transferred goes off to indicate that the call was disconnected. The LEDs next to the BRI Access button and any other shared assignments of the line remain onto indicate that the BRI line is busy with the transfer destination call. Incoming calls to the line receive a busy condition unless the Multi-Line Hunt Group (MLHG) feature is assigned.
Features Feature Interactions Allowed Lists If a restricted user attempts to dial an outside number on a BRI Access button and the number is not on an Allowed List assigned to the telephone, the user hears a reorder tone. The call held for transfer remains on hold, and the user must press the associated line button to return to the call.
Features Hold BRI calls made from a BRI Access button can be put on hold. If the user puts the call to the destination on hold while a CO Transfer is in progress, the user cannot return to the held-for-transfer call. The user should press the BRI Access button and follow the steps in the Feature Use instructions to initiate the transfer. Last Number Dial The digits of numbers dialed on the BRI Access button during a CO Transfer are stored and can be redialed by using the Last Number Dial feature.
Features Station Message Detail Recording (SMDR) A call transferred by using the BRI feature generates only one SMDR record. When a user selects a BRI Access button to initiate a CO Transfer, an “X” appears after the dialed digits (that is, in the farend disconnect field) to identify the call as CO Transfer based. The call is tagged as a CO Transfer call even if the transfer is canceled and the user returns to the held-for-transfer call.
Features Customer Originated Trace Description Customer Originated Trace is one of the Local Area Signaling Services (LASS) features. With the Customer Originated Trace feature, the user can call the central office to obtain the telephone number from which the incoming call was received on the BRI line without placing a call to the telephone number. Customer Originated Trace can be activated on any multiline telephone with a Personal Line button for the BRI line on which the call was received.
Features Telephone Differences Customer Originated Trace should not be used on single-line telephones since a single-line telephone user cannot identify the BRI line on which an incoming call was received. Feature Interactions Auto Dial The feature code assigned to Customer Originated Trace by the local telephone company can be programmed as an Outside Auto Dial button.
Features Multi-Level Precedence and Preemption (MLPP) Description The Multi-Level Precedence and Preemption (MLPP) feature is available primarily for Federal Government configurations. MLPP allows a user to place calls of various priorities that alert with a distinctive ring and may preempt lower priority calls. There are five levels of priority calling defined by the MLPP feature. The levels are indicated by a precedence code, which consists of the digits “O” through ‘(4.
Features 4. Dial the number of your outside call. If the station being called is idle, an MLPP priority call alerts with a distinctive MLPP ringing pattern. On the MERLIN LEGEND system, you hear the priority ringing pattern (a four-burst ring on an MLX telephone and a three-burst ring on an analog multiline and single-line telephone) instead of the normal ringing pattern associated with an outside call (a two-burst ring on all telephone types).
Planning Planning ensures proper use of the Basic Rate Interface (BRI) features offered by the MERLIN LEGEND Communications System. This chapter contains guidelines for the following: ■ Placing the modules n Connecting the BRI lines to the system ■ Selecting options for those lines ■ Assigning lines to the stations Only those options that involve MERLIN LEGEND BRI lines are contained in this guide.
Planning System Planning Forms Whether planning options for a new system or modifying an existing system, record decisions on the appropriate planning form shown in Table 4-1. Work on copies of master forms from the System P/anning Guide (555-620-112). Appendix A of this guide includes forms for planning BRI features. Planning forms for BRI are also available in the Provisioning Guide and P/anning Forms (555-601-112).
Planning Table 4-1.
Planning Control Unit Planning Line Capacity The 800 CO-BRI module contains eight BRI ports. Each port supports two MERLIN LEGEND BRI lines for a total of 16 lines per module. This allows connection of 16 BRI lines from a 5ESS Generic 8 Custom central office at the local telephone company. A maximum of five 800 CO-BRI modules can be connected to the system (not to exceed the system capacity of 80 BRI lines). Planning Form Instructions — System Form 1, System Planning 1.
Planning Mode of Operation Key Mode The Key mode makes the most efficient use of the Local Area Signaling Services (LASS) features available on BRI lines since users are directly connected with the outside BRI line via a Personal Line button. In the Key mode, to use the CO Transfer feature to transfer a call and allow the central office to complete the transfer, the user must select a new programmable button-the BRI Access button.
Planning Line Connections Line Jack Types The line jack type is determined by the type of module. The line jack type for the 800 CO-BRI module is BRI. Auxiliary equipment such as Music-On-Hold, loudspeaker paging, and maintenance alarms cannot be connected to BRI line jacks. Planning Form Instructions — System Form 2c, System Numbering-Trunk Jacks For each 800 CO-BRI module, write “BRI” under “Jack Type.
Planning 4. Under the “Telephone Number or Equipment” column, write the assigned Directory Number from the local telephone company for each BRI line on the line corresponding with the logical ID for its jack. If the telephone number is not known, leave the column blank and enter the information later. 5. In the “Label” column, write the label for each BRI line.
Planning QCC Queue Priority-Hybrid/PBX Mode Only If one or more BRI lines are assigned to ring into the QCC queue, refer to the System Planning Guide (555-620-112) for instructions. Remote Access BRI lines can be programmed for Remote Access. Planning for this option for the MERLIN LEGEND BRI system is the same as for other releases of the MERLIN LEGEND system. Pools When the system is set up, BRI lines are not automatically assigned to any pool at system start-up.
Planning ■ Each BRI line is assigned a Directory Number. Each Directory Number has two call appearances. The first call appearance is used to process both incoming and outgoing calls, and the second call appearance is used to originate outgoing calls only while performing a CO Transfer. ■ The type of terminal supported is specified. The terminal type for the MERLIN LEGEND BRI system is type D.
Planning 5. Indicate the features available on each BRI line: a. To indicate All-Call Privacy/Per-Call Privacy, put a check mark in the “ACP” column. b. To indicate Calling Party Number/Billing Number, put a check mark in the “CPN” column. c. To indicate Automatic Callback, put a check mark in the “AC” column. d. To indicate Automatic Recall, put a check mark in the “AR” column. e. To indicate Customer Originated Trace, put a check mark in the “COT” column. f.
Planning Planning Form Instructions Refer to System Form 1, System Planning, “Control Unit Diagram. ” Complete the following information on System Form 3e, Outside Lines-BRI-Options, page 2: 1. To keep the factory setting (the first slot and port found in the system provides synchronization for the system) or if assigning a different module to provide primary clock synchronization: — Enter the slot and/or DSL number (BRI only) under “Primary Clock Synchronization.
Planning Timers Timers ensure that the system takes the appropriate corrective action when no response is received from the network before the factory-set or programmed settings have expired. Since incorrect settings can hinder the operation of BRI facilities, consult with an A T&T representative or authorized dealer before making changes. The factory-set thresholds are standard settings and should rarely be changed.
Planning Table 4-2. Timers Name Description Factory Setting Allowable Threshold T200 The minimum time which Layer 2 must wait for an acknowledgment of an information frame before initiating retransmission procedures. 1,000 ms 1,000-2,500 ms in increments of 500 ms T203 The maximum time for which the Layer 2 link can remain inactive.
Planning Assigning Telephone Buttons Assigning the kinds of buttons for telephones and direct-line consoles (DLCs) for a MERLIN LEGEND BRI system is the same as for other releases of the MERLIN LEGEND system.
Planning Planning Form Instructions Complete the “Button Diagram” section of each copy of the following forms: System Form 4b, Analog Multiline Telephone System Form 4d, MLX Telephone System Form 4e, MFM Adjunct-MLX Telephone System Form 4f, Tip/Ring Equipment System Form 5a, Direct-Line Console (DLC)-Analog System Form 5b, Direct-Line Console (DLC)-Digits/ System Form 5c, MFM Adjunct-DLC If assigning BRI Access buttons (Key or Hybrid/PBX mode), write “BRI Access” on the appropriate buttons (1 through 10):
System Programming This chapter contains the instructions to program a MERLIN LEGEND Basic Rate interface (BRI) system for BRI lines. Programming is done by using either an MLX-20L telephone console or a personal computer (PC) with System Programming and Maintenance (SPM) software. The chapter also covers the programming of a BRI Access button.
System Programming Basic Programming Considerations Following are various items to consider when programming a MERLIN LEGEND BRI system. Up to 16 lines per 800 CO-BRI module can be assigned to Personal lines, pools, and calling groups. The default line label for these lines is “OUTSIDE.” A BRI line cannot be programmed as a paging, Music On Hold (MOH), or maintenance alarm port.
System Programming Service Profile Identifier A Service Profile Identifier (SPID) is a unique identifier that associates a Basic Rate Interface (BRI) line on the MERLIN LEGEND system with a particular User Service Order Profile (USOP). The USOP contains the information needed by the central office (CO) to provide BRI service to the line. Each SPID is provided by the CO at subscription time.
System Programming Procedure: Service Profile Identifier Step 1 2 3 4 Display/Instructions > System Programming: Make a selection Extensions System Opt ions SysRenumber Tables Operator AuxEquip LinesTrunks Exit NightSrvce Select the LinesTrunks menu. > Lines and Trunks: Make a selection PRI LS/GS/DSl copy TIE Lines RemoteAccss TT/LS Disc Pools DID Toll Type Exit Move to second page of the Lines and Trunks menu.
System Programming Display/Instructions Step 5 On the console On the PC Service Profile Id: Enter line number xxx Backspace Enter Enter the line number. 6 Dial the line number (for example, 801 ) and select Enter Type the line number (for example, 801 ) and press Line xxxx: Enter service profile id Next Backspace Enter Exit I Enter the SPID for the line (up to Dial the SPID for the line. Select Next to 10 digits) enter the SPID for the next BRI line. Type the SPID for the to type line.
System Programming Clock Synchronization The time-division multiplex (TDM) clock source in the MERLIN LEGEND system provides the timing needed to synchronize the flow of digital transmission between the central office (CO) and the system. Any 100D module or any port on an 800 CO-BRI module can be the TDM clock source. On an 800 CO-BRI module the clock source is loop source (taken from the 5ESS CO). The 800 COBRI module can be the primary, secondary, or tertiary clock source.
System Programming Summary: Clock Synchronization Programming System technician; system manager Mode Key, Hybrid/PBX Idle Condition Not required Planning Form System Form 3e, Outside Lines-BRl Options Factory Setting The first 100D module or 800 CO-BRI port found sequentially in the control unit is the default primary loop clock.
System Programming Procedure: Clock Synchronization Step 1 2 3 4 Display/Instructions > System Programming: Make a selection Extensions System Options SysRenumber Tables Operator LinesTrunks AuxEquip NightSrvce Select the LinesTrunks menu. > Lines and Trunks: Make a selection PRI LS/GS/DSl TIE Lines copy TT/LS Disc RemoteAccss Pools DID Toll Exit Move to the second page Lines and Trunks menu.
System Programming On the console On the PC Enter the slot number of the 800 CO-BRl or 100D module. Select Enter, Dial the slot number the 800 C0-BRl module. Type the slot number of the 800 C0-BRl module. Save your entry. Select Enter. Select For BRI, select L OOP. select Enter. Display/Instructions Step 5 Primary System Clock: Enter slot number (1-17) x x Delete Backspace Exit 6 7 Enter ❑ F10 rimary ClkSource Slotxx elect one oop ocal Select type of clock source.
System Programming BRI Timers The programmable times on the 800 CO-BRI module set the time limits for waiting for responses from the central office (CO). When no response is received from the CO, the system takes the appropriate corrective action. The factory settings for these timers are standard and rarely need to be changed. If you are not sure of the correct timer settings for your BRI lines, check with your authorized support representative before you make a change.
System Programming Entering Programming Console: Select Menu ➜ Sys Program ➜ Exit PC/SPM: Type SPM ➜ Select any key ➜ F1 ➜ ❑ ❑ F5 Exiting Without Changes To exit from any screen without making changes, select Exit on the console or press F5 on the PC before saving your entry or menu selection.
System Programming Table 5-1.
System Programming Step 4 Display/Instructions On the PC Select Timers. Select F3 . BRI Lines: Make a selection ServProf Id Timers Select Timers. 5 On the console ❑ BRI Timer Settings: Make a selection T308 Timer T200 Timer T203 Timer T303 Timer T305 Timer Select the timer. Select the timer. F2 , F3 ❑ ❑ , Select the time ( F4 , or ❑ ❑ ❑ F1 , F6 ). 6 Select Drop. Select Alt + P. 7 Specify new setting by using Table 5-1. Dial [nnnn]. Type [nnnn]. 8 Save your entry. Select Enter.
System Programming BRI Access Button The BRI Access button is used for the CO Transfer feature and to select a Directory Number for which a Local Area Signaling Service (LASS) feature is activated. However, it is not used to place or receive calls. The BRI Access button is programmed onto one of the first ten buttons on a multiline telephone. Only one BRI Access button can be on a telephone. The BRI Access button can be copied from one station to another programmed station via the Extension Copy feature.
System Programming Summary: BRI Access Button Programmable by System technician, system manager Mode Key, Hybrid/PBX Idle Condition Telephone must be idle Planning Forms System Form 4b, Analog Multiline Telephones System Form 4b, Digital/lSDN Telephone System Form 5a, Direct-Line Console (DLC)Analog System Form 5b, Direct-Line Console (DLC)Digital/lSDN Factory Setting None Valid Entries Not applicable Inspect Yes, through station inspect Copy Option Yes Console Procedure To program extensi
System Programming Procedure: BRI Access Button Step 1 Display/Instructions 3 > System Programming: Make a selection Language Labeling Data Print Cntr-Prg Exit Select Centralized Programming. Select PgUp, ❑ Select F4 . Select Program Ext. Select Enter the telephone extension number. Dial [nnnn]. Type [nnnn]. Save your entry. SelectEnter. Select Centralized Programming: Make a selection Program Ext COPY Ext ❑ F1 . Centralized Programming: Enter extension Backspace Exit 5 Select More.
System Programming Step 6 On the console Display/Instructions Extension Program Press HOME to Exit Xxxx: Sys Program Start programming. 7 On the PC Select Start. Select ❑. F10 Select Button: Extension Program Page 1 Page 2 I Sys Program Select one of the first ten buttons Select the button the telephone. on your telephone. 8 lank Press HOME to Exit Delete Page 1 Page 2 ListFeature Sys Program elect ListFeature. 9 Select the function key for the button on the telephone. I Select ListFeature.
System Programming Step 10 Display/Instructions On the console On the PC Select Button: Extension Program Page 1 Page 2 Sys Program I Return to System Programming. 11 To return to System Programming menu 5-18 BRI Access Button ❑ Selects Sys Program. Select F5 Select Exit two times Select PgUp. and press M o r e .
System Programming System Programming Reports The System Programming Reports are revised to include the following BRI information: ■ System Information Report adds “800 CO-BRI” to its module types. ■ Extension Information Report adds “BRI Access” to its button types. ■ Error Log Report includes the new errors associated with BRI functioning (see Chapter 6, Maintenance). ■ General Trunk Information report includes 800 CO-BRI module information.
Maintenance Maintenance on the MERLIN LEGEND Communications System consists of automatic and demand tests and error messages. Similarly, there are automatic and demand tests that run on the 800 CO-BRI module. Errors appear in error logs, and error messages appear on the maintenance terminal display (the MLX20L telephone or the PC).
Maintenance BRI Maintenance Maintenance for the Basic Rate Interface (BRI) focuses on the functioning of the 800 CO-BRI module. Because the MERLIN LEGEND system is using those BRI features offered by the central office (CO), the system maintenance is the responsibility of the CO. Still, there are automatic and demand tests that check the functioning of the module, logs in which errors are recorded, error messages that tell the user when errors occur, and alarms that also alert the user to errors.
Maintenance Accessing Maintenance Screens Accessing the maintenance screens in the MERLIN LEGEND BRI system is the same as for other MERLIN LEGEND releases. Follow the screens and instructions below. Screen Display Step 1 18 Sep 18:34 show Number Next Press HOME to Exit Directory 3 Alarm Clock Sys Program Maintenance Timer Ext Maintenance: Make a selection System slot While viewing the Home screen, press Menu.
Maintenance Demand Tests Demand tests are diagnostic tests that check the functioning of hardware and software. Before running a demand test, the user must take the 800 CO-BRI module out of service. This can be done by choosing “Busy-Out” or “Reset” from the slot maintenance screens. Choosing Busy-Out is preferred because Busy-Out does not disrupt calls in progress.
Maintenance Internal (DSE) Loopback Test The Internal (DSE) Loopback Test checks the communication path between the Processor module and the 800 CO-BRI module. If the test fails, the 800 CO-BRI module usually should be replaced. Follow the screens and instructions below to run an Internal Loopback Test. 1 slot : Enter s l o t number (OO-17) Backspace Exit 2 Procedure — — — At the Slot screen, enter the number of the slot in which the 800 CO-BRI module resides. Select Enter.
Maintenance Screen Display Step 5 6 Procedure slot xx: Make a selection Status Demand Test Busy-Out Reset Restore Clock BchLoopback Exit You return to the menu for that slot. Select Demand Test. Demand Test Slot xx: Make a selection Note:Busy out slot first BoardCntrlr IntLoopback At the Demand Test SIot screen, select IntLoopback. Exit 7 Demand Test Slot xx: Board 800 CO-BRI Internal Loopback: Test Once Repetitive Select Test Once for a single testing Or Repetitive for repeated testing.
Maintenance Step 10 Screen Display Demand Test Slot xx: Board 800 CO-BRI Internal Loopback Test FAILED Xxxxxxxxxxxxxxxxxxxxxxx xx xx xx xx xx xx xx xx Exit Procedure If the test fails, you receive error messages and error counts. After the test is run, restore the 800 CO-BRl module and exit maintenance as you would for any demand test (see the Maintenance and Troubleshooting Guide, #555-620-143).
Maintenance Follow the screens and instructions below to run a Board Controller Test, Screen Display Step 1 Procedure At the Slot screen, enter the number of the slot in which the 800 CO-BRI module resides. Select Enter. slot : Enter slot number (O O-17) xx Backspace Exit 2 3 Enter slot xx: Make a select i o n Demand Test Status Reset Busy-Out C l o c k Restore BchLoopback Exit I Busy-Out SlOt XX: Busy-Out Complete Exit 5 At the Busy-Out Slot screen, select Yes.
Maintenance Screen Display Step 6 At the Demand Test Slot screen, select BoardCntrlr. Demand Test Slot xx: Make a selection Note:Busy out slot first BoardCntrlr IntLoopback Exit 7 Procedure I Select Test Once for a single test Repetitive for repeated testing. Demand Test Slot xx: Board 800 CO-BRI Board Controller: Test Once Repetitive Exit 8 Demand Test Slot xx: Board 800 CO-BRI Board Controller Test in Progress I The Board Controller Test in Progress screen is displayed.
Maintenance After the test is run, restore the 800 CO-BRI module and exit maintenance as you would for any demand test (see the Maintenance and Troubleshooting Guide, #555-620-143). B-Channel Loopback Test The B-Channel Loopback Test checks the communication path between the Processor module and the 800 CO-BRI module interface for BRI lines. If the test fails, the 800 CO-BRI module usually should be replaced. Follow the screens and instructions below to run a B-Channel Loopback Test.
Maintenance Procedure Screen Display Step Busy-Out Slot XX: When the busy-out of the slot is complete, the Busy-Out Complete Busy-Out Complete screen is displayed. Select Exit. NOTE: If the busy-out cannot be completed, a screen showing “Busy-Out FAILED” appears. Repeat steps 2 through 4 until the slot can be busied-out. Exit 5 Slot I xx: Make a selection Status Busy-Out Restore BchLoopback Exit Demand Test Reset Clock The B-Channel Loopback in Progress screen is displayed.
Maintenance Step 8 Screen Display BchLoopback Slot xx: BchLoopback Failed Xxxxxxxxxxxxxxxxxxxxxxx xx xx xx xx xx xx xx xx Procedure If the test fails, you receive error messages and error counts. Exit After the test is run, restore the 800 CO-BRl module and exit maintenance as you would for any demand test (see the Maintenance and Troubleshooting Guide, 555-620-143).
Maintenance BRI Module and Clock Synchronization The time-division multiplex (TDM) clock reference for the system can be a loop source supplied by the CO, or a local source supplied by the MERLIN LEGEND system during certain maintenance conditions and events. The 800 CO-BRI module can be a local source of clock reference, and any Digital Subscriber Line (DSL) port on the 800 CO-BRI module can be the point of a loop source.
Maintenance The 800 CO-BRI Module as the Clock Source If the 800 CO-BRI module functions as the local clock source, the maintenance software monitors all frame slip counters associated with all the activated Digital Subscriber Line (DSL) ports on the module. (A DSL port is activated when it has at least one Service Profile Identifier assigned to it.
Maintenance BRI Clock Status The status of the clock on the 800 CO-BRI module can be viewed by selecting clock from the Slot menu. Follow the screens and instructions below to check the clock status of the 800 CO-BRI module. Screen Display Step 1 slot : Enter slot number (00-17) Backspace Exit 2 Procedure At the Slot screen, enter the number of the slot in which the 800 CO-BRI module resides. Select Enter.
Maintenance Port Screens—Digital Subscriber Lines The ports on the 800 CO-BRI module are linked to Digital Subscriber Lines (DSLs). Therefore, a DSL option has been added to the Port menu. By choosing DSL from this menu, the user can check the status of, busy-out, restore, or check the error events for the DSL port. Follow the screens and instructions below to get to the DSL menu.
Maintenance Digital Subscriber Line Error Events To check the error events for a Digital Subscriber Line (DSL), the user must access the maintenance screens via the DSL port menu. Follow the screens and instructions below to check the error events for a DSL. Screen Display - . Step Procedure 1 DSL XXXX : Make a selection Status Busy Out Restore Error Events Exit From the DSL port menu, select Error Events.
Maintenance Error Logs and Error Messages There are two types of errors and two types of alarms: ■ Permanent errors, which cause permanent alarms ■ Transient errors, which cause transient alarms A permanent error causes major degradation of service and requires immediate action. A permanent error is recorded in the permanent error log and causes a permanent alarm.
Maintenance Table 6-1. Error Conditions Type of Error BRI LOSS OF SYNC Abbrv. SYNC BRI SLIPS >88 Permanent? Transient? Sys.
Maintenance Slips (BRI SLIPS > 88) A slip occurs when there is the loss of a frame because of clock synchronization. When the slips (negative plus positive) count is greater than 88, a transient error occurs. Once the error is logged, every 15 minutes the slips count is scanned and totaled. Also, every 15 minutes the count is decreased by 10. For example, if 15 slips occur during the 15-minute interval, the transient count increases by a net of 5 (15 slips counted minus 10).
Maintenance Network-Invoked B1 Loopback Activation (BRI NET INV B1 LB ACT) The B1 Ioopback testis invoked by the CO at installation to verify error-free transmission. When the MERLIN LEGEND system receives this request from the CO, the maintenance software turns on the red LED on the 800 CO-BRI module, logs the condition as a permanent error, and takes the B-channel out of service.
Maintenance Endpoint Errors Endpoint is in RESTRICTED mode (ENDPT IN RESTRICTED SVCE) When the MERLIN LEGEND system is initializing an endpoint, it sends an initialization request message, which contains the Service Profile Identifier (SPID), to the CO. If the SPID is invalid, the CO sends back a message that the endpoint is in RESTRICTED SERVICE mode. In this mode, the CO usually blocks any outgoing calls. When this error is received, the technician should verify the SPID and reprogram it.
Maintenance Minor Errors Near-End Block (CRC) Errors (NEBEs) When a transceiver on the 800 CO-BRI module receives a superframe that has a bad CRC error, the condition is called a Near-End Block Error (NEBE). Automatic maintenance programs scan the NEBE error counter every 15 minutes and clear it hourly. The total NEBE count is kept for the previous hour and the current hour. NEBE errors are not permanent or transient errors; therefore, no action is taken.
Maintenance Table 6-2. BRI Error Messages Description of Error Code 6COC BRI LOSS OF SYNC: Service on the link has been lost. 6COD BRI SLIPS > 88: Slip count > 88 Service on the link is still operative. 6COE BRI NET REQUESTED CCRCs: Outgoing signal to the CO does not have valid framing information. Possible Solution Usually no action is required. Check the BRI module. If problem persists, contact the National Technical Service Center (NTSC). Usually no action is required. Check the BRI module.
Maintenance Table 6-2. BRI Error Messages (Continued) Code 3401 Description of Error ENDPT IN RESTRICTED SVCE Service on the link has been lost. 9403 LINK ESTABLISHMENT FAIL Service on the link has been lost. 9404 NW NOT RESPOND TO SETUP Service on the link has been lost. 9405 NW NOT RESPOND TO RELEAS Service on the link has been lost. 9406 NW TOOK ENDPOINT OOS Service on the link has been lost. 9407 ENDPOINT UNINIT (L2,L3) Service on the link has been lost.
Planning Form This appendix contains master copies of the system planning form you need to plan and program BRI lines/trunks connected to the system. Duplicate the master and work on the copy.
MERLIN LEGEND Communications System — CO-BRI System Form 3e Outside Line - BRI Options Features Logical ID Line Number Directory Number 0 1 8 0 1 555-1234 0 2 8 0 2 555-1235 LASS Features Service Profile I d e n t i f i e r ACP CPN AC AR COT MLHG MLPP 03 ◆ = Factory Setting - ACP = All-Call Privacy/Per-Call Privacy CPN = Calling Party Number/Billing Number AC = Automatic Callback = Autmatic Recall AR COT = Customer Originated Trace MLHG = Multi-Line Hunt Group MLPP = Multi-Level Preceden
MERLIN LEGEND Communications System — CO-BRI System Form 3e (Continued) Clock Synchronization — 100D or BRI Modules . Prmary clock . . . . Synchronization Synchronization Slot No. DSL No. . Tertiary Clock Synchronization Secondary Clock Slot No. (BRI only) DSL No. Source ❏ Loop ❑ Local(100D only) Slot No. DSL No. (BRI only) Source ❏ Loop ◆ ❑ Local (100D only) (BRI only) Source ❑ Loop ◆ ❑ Local (100D only) Timers T200 Timer ❏ 1,000 ms. ◆ ❏ ms. (1,000 to 2,500 ms.
Customer Support Information B Support Telephone Number In the U.S.A. only, AT&T provides a toll-tree customer Helpline (1-800-628-2888) 24 hours a day. If you need assistance when installing, programming, or using your system, call the Helpline, or your AT&T representative. Outside the U.S.A., if you need assistance when installing, programming, or using your system, contact your AT&T representative.
Customer Support Information FCC Notification and Repair Information This equipment is registered with the FCC in accordance with Part 68 of its rules. In compliance with those rules, you are advised of the following: ■ Means of Connection. Connection of this equipment to the telephone network shall be through a standard network interface jack, USOC RJ11 C, RJ14C, RJ21X. Connection to E&M tie trunks requires a USOC RJ2GX. Connection to off-premises extensions requiresaUSOCRJ11 C or RJ14C. Connection to 1.
Customer Support Information — The quantities and USOC numbers of the jacks required. — For each jack, the sequence in which lines are to be connected, the line types, the FIC, and the REN by position when applicable. ■ Disconnection. You must also notify your local telephone company if and when this equipment is permanently disconnected from the line(s). ■ REN. The REN is used to determine the number of devices that may be connected to the telephone line.
Customer Support Information ■ Automatic Dialers. WHEN PROGRAMMING EMERGENCY NUMBERS AND/OR MAKING TEST CALLS TO EMERGENCY NUMBERS: — Remain on the line and briefly explain to the dispatcher the reason for the call. — Perform such activities in off-peak hours, such as early morning or late evening. ■ Direct Inward Dialing (DID).
Customer Support Information Security of Your System: Preventing Toll Fraud As a customer of a new telephone system, you should be aware that there is an increasing problem of telephone toll fraud. Telephone toll fraud can occur in many forms, despite the numerous efforts of telephone companies and telephone equipment manufacturers to control it. Some individuals use electronic devices to prevent or falsify records of these calls.
Customer Support Information Assign access codes randomly to users on a need-to-have basis, keeping a log of all authorized users and assigning one code to one person. Use random-sequence access codes, which are less likely to be easily broken. Deactivate all unassigned codes promptly. Ensure that Remote Access users are aware of their responsibility to keep the telephone number and any access codes secure.
Customer Support Information ■ Failure to follow AT&T’s installation, operation, or maintenance instructions ■ Unauthorized system modification, movement, or alteration ■ Unauthorized use of common carrier communication services accessed through the system ■ Abuse, misuse, or negligent acts or omissions of the customer and persons under the customer’s control ■ Acts of third parties and acts of God AT&T’S OBLIGATION TO REPAIR, REPLACE, OR REFUND AS SET FORTH ABOVE IS YOUR EXCLUSIVE REMEDY.
Customer Support Information The voice mail system, through proper administration, can help you reduce the risk of unauthorized persons gaining access to the network. However, phone numbers and authorization codes can be compromised when overheard in a public location, are lost through theft of a wallet or purse containing access information, or through carelessness (writing codes on a piece of paper and improperly discarding them).
Customer Support Information Remote Administration and Maintenance The Remote Administration and Maintenance feature of your telecommunications system, if you choose to use it, permits users to change the system features and capabilities from a remote location. The Remote Administration and Maintenance feature, through proper administration, can help you reduce the risk of unauthorized persons gaining access to the network.
Customer Support Information ■ If B-10 your Remote Administration and Maintenance feature requires that someone in your office transfer the caller to the Remote Administration and Maintenance extension, you should impress upon your employees the importance of only transferring authorized individuals to that extension.
Abbreviations D A AC Automatic Callback ACP All-Call Privacy AR Automatic Recall ARs Automatic Route Selection ATL telephone Analog Multiline telephone AVP Integrated Solution Audix Voice Power B B-channel bearer channel BN billing number BRI Basic Rate Interface c CO central office COBOT Automated Attendant COBOTYX AT&T Attendant CO-BRI Central Office-Basic Rate Interface COT Customer Originated Trace C P N calling party number D-channel data channel DGC Direct Group Calling DLC Direct Line Co
Abbreviations M S MFM Multi-Function Module MLHG Multi-Line Hunt Group MLPP Multi-Level Precedence and Preemption MLX telephone Multiline Digital telephone MOH Music-On-Hold SA button System Access button SID Station Identification SMDR Station Message Detail Recording SPID Service Profile Identifier S P M System Programming and Maintenance N T N E B E Near-End Block Error NTSC National Technical Service Center TDM time-division multiplex P UPAM Universal Paging Access Module USOP User Service Ord
Glossary A C adjunct Optional equipment used with the communications system, such as an alerting device that connects to a multiline telephone or to a telephone jack. calling group A team of agents who answer the same types of calls. calling party number (CPN) A number that identifies the originator of a call and is provided either by the originating customer premises equipment or by the originating central office.
G l o s s a r y digital The representation of information in discrete elements such as off and on or 0 and 1. See a/so analog transmission Digital Subscriber Line (DSL) An ISDN Basic Rate, 2-wire U-interface between the 5ESS central office and the MERLIN LEGEND system. The term “Digital Subscriber Line” is used synonymously with the term “BRI line. ” Each DSL consists of two 64-Kbps B-channels and one 16-Kbps D-channel. The MERLIN LEGEND system supports two Directory Numbers for each DSL.
Glossary L light-emitting diode (LED) A semiconductor device that produces light when voltage is applies. LEDs show the operational status of hardware components, the results of maintenance tests, the alarm status of circuit packs, and the activation of telephone features. lines Lines are the representations that appear on MERLIN LEGEND telephones. They are used to place and receive calls and can be put into pools.
Glossary S Service Profile Identifier (SPID) A Service Profile Identifier associates a terminal with a User Service Order Profile (see below) that contains the information necessary to provide service to the terminal. At the time of subscription, the network provides each SPID. A station’s Directory Number is usually a subset of the SPID. Compare to User Service Order Profile. signaling The sending of control and status information between devices to set up, maintain, or take down a connection.
Index # 100D module clock source programming, 5-5—5-7 local clock source, as, 6-13 maximum number of, 2-3 5ESS central office (CO) BRI connection, 1-4 outgoing calls, 1-11 feature interaction with, 1-12—1-13 5ESS Generic 8 Custom (5E8) software, 1-4 800 CO-BRI module B channel testing, 6-10 clock synchronization, setting, 6-13 description, 1-5, 2-2—2-3 installation, 2-7—2-8 surrogate mode, programming, 5-2 wiring, 2-6 A accessing Maintenance Screens, 6-3 adjuncts, unsupported, 2-14 alarms, 2-5, 6-2, 6-18
I n d e x C Call Accounting System (CAS), 1-8 Call Accounting Terminal (CAT), 1-8 Call Handling, 1-11-1-14 Call Management System (CMS), 1-8 calling groups, 1-11, 5-2 Calling Party Number/Billing Number analog sets with.
I n d e x F G feature access code, 1-15 feature code, single line telephones with, 2-13 feature interaction, 3-5, 3-9, 3-18 Feature module description, 1-4 installation, 2-9-2-11 requirements, 2-2 features, BRI, see also specific feature names All-Call Privacy, 1-14, 3-2—3-5 Automatic Call, 1-15, 3-6-3-9 Automatic Recall, 1-15, 3-10-3-12 BRI Access button, 1-7, 2-15 Calling Party Number/Billing Number (CPN/BN), 1-14, 3-13—3-14 CO Transfer, 1-15, 3-1 5—3-18 Customer Originated Trace, 1-16, 3-21—3-22 LASS,
I n d e x L light-emitting diode (LED), 1-11, 2-5 line capacity, planning considerations, 4-4 line connections jacks for auxiliary equipment, 4-7 jacks for outside lines, 4-6 line jack types, 4-6 planning, 4-6-4-7 line jack types, planning, 4-6 line mapping, 1-6 line number, 5-19 line options planning clock synchronization, 4-10 Pools, 4-8 QCC operator to receive calls, 4-7 QCC queue priority, 4-8 Remote Access, 4-8 Service Profile Identifier (SPID), assigning, 4-8 timers, 4-12 Local Area Signaling Ser
I n d e x planning forms System Form 3e, Outside Lines—BRl Options, 5-3, 5-7, 5-11 System Form 4b, Analog Multiline Telephones, 5-15 System Form 4b, Digital/lSDN Telephone, 5-15 System Form 5a, Direct-Line Console (DLC)— Analog, 5-15 System Form 5b, Direct-Line Console (DLC)— Digital/lSDN, 5-15 Point-to-Multipoint service, 1-5 pool access codes, 1-11 Pool button, 1-10 Pool dialout code, 1-10 pools description of, 1-10 planning considerations, 4-8 programming considerations, 5-2 port screens, 6-1 5—6-1 9 P
I n d e x U Universal Paging Access Module (UPAM), 2-14 upgrading the MERLIN LEGEND System, 2-9 User Service Order Profile (USOP), 1-4, 1-10, 5-3 V Vistium Personal Video system 1200/1300, supported, 1-9 Voice Messaging Interface (VMI) ports, 2-15 W wiring, 800 CO-BRI Module, 2-6 IN-6
555-601-111 October 1994 Graphics @AT&T 1988
