Nortel Meridian SL-100 User manual

555-4001-129
Meridian SuperNode
Meridian SL-100
Intelligent Peripheral Equipment (IPE) Reference Manual
MSL14 Standard 08.01 November 2000

Meridian SuperNode
Meridian SL-100
Intelligent Peripheral Equipment (IPE) Reference Manual
Publication number: 555-4001-129
Product release: MSL14
Document release: Standard 08.01
Date: November 2000
Copyright © 1996-2000 Nortel Networks,
All Rights Reserved
NORTEL NETWORKS CONFIDENTIAL: TheinformationcontainedinthisdocumentisthepropertyofNortelNetworks.
Except as specifically authorized in writing by Nortel Networks, the holder of this document shall keep the information contained
herein confidential and shall protect same in whole or in part from disclosure and dissemination to third parties and use same for
evaluation, operation, and maintenance purposes only. Changes or modifications to the Meridian SL-100 without the express
consent of Nortel Networks may void its warranty and void the user’s authority to operate the equipment.
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as
progress in engineering and manufacturing may warrant.
This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC
Rules, and the radio interference regulations of the Canadian Department of Communications. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual,
may causeharmful interference to radio communications. Operationof this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at the user’s own expense. Allowing this equipment
to be operated in such a manner as to not provide for proper answer supervision is a violation of Part 68 of the FCC Rules, Docket
No. 89-114, 55FR46066.
The MSL-100 system is certified by the Canadian Standards Association (CSA) with the Nationally Recognized Testing Laboratory
(NRTL).
This equipment is capable of providing users with access to interstate providers of operator services through the use of equal
access codes. Modifications by aggregators to alter these capabilities is a violation of the Telephone Operator Consumer Service
Improvement Act of 1990 and Part 68 of the FCC Rules.
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numerique de la classe A respecte toutes les exigences du Reglement sur le materiel brouilleur du Canada.
YEAR 2000 READINESS DISCLOSURE
This information was originally published prior to October 19,1998. The foregoing legend applies retroactively in accordance with
the U.S. Year 2000 Information and Readiness Act and on an ongoing basis.
*Nortel Networks, the Nortel Networks logo, the Globemark, How the World Shares Ideas, Unified Networks, DMS, MAP, Meridian,
MSL, Nortel, Northern Telecom, NT, SL-100, and SuperNode are trademarks of Nortel Networks.

Publication History v
Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
Publication history
To comply with Nortel Networks Technical Documentation Standards, the
Publication history will only contain updates for the current release and two
prior releases.
November 2000
Release 08.01, MSL14, Standard. This version includes information on the
enhanced IPE controller (EXPEC) card.
May 2000 Release 07.01, MSL12, Standard. This version represents the standard release
of this document and includes some minor pagination and graphics differences
from the previous version.
November 1999
Release 06.02, MSL11, Standard. This version includes information on the
enhanced IPE controller (EXPEC) card.

Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
v
Contents
Publication history iii
About this document ix
When to use this document ix
How this document is organized ix
How to check the version and issue of this document x
References in this document x
What precautionary messages mean xi
How commands, parameters, and responses are represented xii
Input prompt (>) xii
Commands and fixed parameters xiii
Variables xiii
Responses xiii
1 IPE product overview 1-1
Status reporting with XSM functionality 1-1
Software required 1-2
Controller card interfaces 1-4
Enhanced IPE controllor card 1-4
RTS FLASH 1-5
Limitations and Restrictions 1-5
Line cards 1-6
Automated datafill and resource allocation for the IPE 1-6
Ringing resource allocation 1-6
Automated datafill for IPE line cards 1-7
Accompanying features 1-8
Hardware requirements 1-8
Supported telephones 1-8
Translations and service orders 1-10
2 IPE architecture 2-1
Minimum and maximum IPEs in one IPEC 2-1
Universal equipment module 2-2
IPE module components 2-3
Peripheral equipment power supply 2-4
Controller cards 2-5
Line cards 2-8
Ringing generator 2-10
Pedestal base 2-11

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555-4001-129 Standard 08.01 November 2000
Blower unit (NT8D52) 2-11
Power Distribution Unit (NT7D67) 2-11
Expansion kit (NT8D49) 2-11
IPEC exterior completion 2-12
Module front/rear panels (NT9D15) 2-12
Module side panels (NT9D18) 2-12
Top cap (NT7D00) 2-13
Extended system monitor 2-13
Master and slave XSMs 2-13
XSM functionality 2-15
XSM alternative 2-15
3 Provisioning an IPEC 3-1
Cabinet lineup 3-3
IPE in remote switching center (RSC) 3-4
IPE with Meridian Cabinet Remote Module - SONET 3-5
Mounting and bracing kits 3-7
Installations in non-earthquake risk areas 3-7
Installation in earthquake risk areas 3-7
4 Cabling specifications 4-1
Power cable requirements 4-1
Terminating equipment power feeders and returns 4-1
Alarm cable requirements 4-4
Cabling for XSM alarms 4-5
Setting XSM option DIP switches 4-7
Switchboard cabling requirements 4-14
DS30A links 4-15
IPE to MCTM, MCRM, MNET, and MLNK 4-15
Ethernet Connection from NT7D07BA controller card 4-16
Main Distribution Frame (MDF) cabling 4-17
Ground cabling 4-21
Frame Ground (FGND) cabling 4-21
Logic return cabling 4-22
Cabling card cage modules to the cross-connect terminal 4-23
5 Environmental specifications 5-1
Ambient temperature 5-1
Circuit breaker status and faults 5-1
Column thermal unit status and faults 5-2
Relative humidity 5-2
Power specifications 5-2
Power requirements 5-2
Power consumption 5-2
AC Powered IPE 5-3
Foreign voltage protection 5-3
Heat dissipation 5-4
Weights and dimensions 5-4
6 Feature implementation 6-1

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Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
Downloading the IPE software 6-1
Package replacements 6-2
System responses 6-2
Controller card message translation 6-4
Cutoff on Disconnect 6-7
Hardware and software requirements 6-7
Auto recovery DLM/IPEs 6-7
Interaction 6-8
Overload control support 6-8
Objectives 6-9
Overload protection 6-9
Overload indicators 6-11
System initialization functions 6-14
Operating system initialization 6-14
Application software initialization 6-14
IPE initialization 6-14
Clock synchronization 6-17
System communications 6-17
Dual messaging channel support 6-17
Sanity timer 6-18
Diagnostics 6-18
Routine maintenance functions 6-19
BSY messages 6-19
RTS messages 6-20
TEST messages 6-20
Link status messages 6-20
Configuration messages 6-20
QUERY messages 6-20
Display functions on NTD07AC 6-20
Light Emitting Diode (LED) control 6-20
Hexadecimal display 6-21
Display functions on NTD07BA 6-21
Background maintenance functions 6-22
Equipment auditing 6-22
Hexadecimal display control 6-22
Watchdog timer setting 6-22
Phase lock loop switching 6-22
7 Log and fault reports 7-1
XSM maintenance interface 7-1
XSM unsolicited fault reports 7-1
XSM “fault cleared" reports 7-1
XSM periodic audits 7-2
Descriptions of log reports 7-2
LINE101 7-3
PM102 7-4
PM103 7-4
PM104 7-4
PM105 7-4
PM106 7-4

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555-4001-129 Standard 08.01 November 2000
PM107 7-5
PM116 7-5
PM117 7-5
PM128 7-5
PM179 7-6
PM180 7-7
PM181 7-7
PM189 7-8
XSM100 7-10
XSM101 7-10
XSM102 7-10
XSM103 7-11
XSM104 7-11
XSM105 7-12
8 Software maintenance and diagnostics 8-1
Maintenance state indicators 8-1
Circuit card state indicators 8-3
Command Interpreter (CI) commands 8-3
Accessing NPMDIR 8-3
9 Hardware maintenance tools 9-1
Circuit card features 9-1
Self tests 9-1
Visible indicators (LEDs) 9-1
XSM indicators 9-3
Temperature alarms 9-4
10 Appendix Operational measurements 10-1
11 Appendix Installation awareness 11-1
Short circuit on ring side of digital line 11-1
How to avoid a short circuit condition 11-1
List of terms 12-1

Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
xi
About this document
When to use this document
This book describes Intelligent Peripheral Equipment (IPE). Included is
information on the IPE hardware, provisioning an Intelligent Peripheral
Equipment Column (IPEC), cabling and environmental specifications, feature
implementation, logs, software and hardware maintenance and diagnostics,
and operational measurements (OMs). This document is part of the
documentation package that supports Nortel Networks Meridian SL-100
products.
How this document is organized
This document is divided into the following chapters:
• Chapter 1, “IPE product overview", gives a brief description of the
Intelligent Peripheral Equipment (IPE), and Intelligent Peripheral
Equipment Column (IPEC). This includes a list of required software and
descriptions of the XSM, the controller card interfaces, and the telephones
that are supported by IPE.
• Chapter 2, “IPE architecture", lists, describes, and illustrates the hardware
included in the IPEC and in the pedestal base.
• Chapter 3, “Provisioning an IPEC", describes the cabinet lineup and IPE
used in Remote Switching Centers (RSCs).
• Chapter 4, “Cabling specifications", describes the external and internal
power cable requirements, the Extended System Monitor (XSM) alarm
cable requirements, the switchboard cabling requirements, the ground
cabling, and the cabling cardcage modules to the cross-connect terminal.
• Chapter5,“Environmentalspecifications",describesrequirementsrelating
to the ambient temperature, the relative humidity, the power specifications,
the heat dissipation, and the weights and dimensions.
• Chapter 6, “Feature implementation", describes how to download the IPE
software, the controller card message translation, the system initialization
functions, the attendant console feature implementation, the Integrated
Voiceand Data(IVD)feature implementation,the 500/2500analog feature

xii About this document
555-4001-129 Standard 08.01 November 2000
implementation, the IPE on Remote Cluster Controllers (RCCs), and the
Remote Switching Center (RSC) to IPE Emergency Standalone (ESA).
• Chapter 7, “Log and fault reports", briefly describes the XSM maintenance
interface as it pertains to log and fault reports. This includes unsolicited
fault reports, faultcleared reports, and periodic audits. This is followed by
a list and descriptions of IPE-related logs
• Chapter 8, “Software maintenance and diagnostics", describes the
maintenance state indicators, the circuit card state indicators, the
Command Interpreter (CI) commands, the IPE maintenance commands,
the PM nodes types, peripheral maintenance, line card maintenance, and
facility maintenance.
• Chapter 9, “Hardware maintenance tools", provides information about
hardware maintenance tools.
• Appendix A, “Operational measurements", lists the Operational
Measurements (OMs) for IPE. A further reference where details of these
OMs can be found is given.
• Appendix B, “Installation awareness", provides some cautionary
information on how to avoid a short circuit condition that could occur
during installation and sometimes during routine maintenance functions.
• “List of terms" lists the full names for the acronyms and abbreviations
found in this document.
How to check the version and issue of this document
The version and issue of the document are indicated by numbers, for example,
01.01.
The first two digits indicate the version. The version number increases each
time the document is updated to support a new software release. For example,
the first release of a document is 01.01. In the next software release cycle, the
first release of the same document is 02.01.
The second two digits indicate the issue. The issue number increases each
time the document is revised but rereleased in the same software release cycle.
For example, the second release of a document in the same software release
cycle is 01.02.
This document is written for all MSL-100 Family offices. More than one
version of this document may exist. To determine whether you have the latest
version of this document and how documentation for your product is
organized, check the release information inCommercial Systems Master Index
of Publications or the Defense Switched Network Master Index of
Publications.

About this document xiii
Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
References in this document
The following documents are referred to in this document:
•Disk Maintenance Subsystem Reference Manual, 297-1001-526
•Commands Reference Manual, 297-1001-822
•Line Side T-1 Interface (LTI) for IPE Services Guide, 555-4001-022
•Digital Line Module (DLM) Reference Manual, 555-4001-101
•M2000 Digital Telephones Reference Manual, 555-4001-110
•M3000 Touchphone Reference Manual, 555-4001-112
•Meridian Modular Telephones Reference Manual, 555-4001-114
•Meridian Communications Adapter (MCA) Reference Manual,
555-4001-123
•Defense Switched Network Feature Description Manual
•Defense Switched Network Translations Guide
•Defense Switched Network Service Order Reference Manual
•Defense Switched Network Log Reports Manual
•Defense Switched Network Customer Data Schema
•Commercial Systems Feature Description Manual
•Commercial Systems Translations Guide
•Commercial Systems Service Order Reference Manual
•Commercial Systems Log Reports Manual
•Commercial Systems Customer Data Schema
What precautionary messages mean
The types of precautionary messages used in Nortel Networks documents
include attention boxes and danger, warning, and caution messages.
An attention box identifies information that is necessary for the proper
performance of a procedure or task or the correct interpretation of information
or data. Danger, warning, and caution messages indicate possible risks.
Examples of the precautionary messages follow.

xiv About this document
555-4001-129 Standard 08.01 November 2000
ATTENTION Information needed to perform a task
DANGER Possibility of personal injury
WARNING Possibility of equipment damage
CAUTION Possibility of service interruption or degradation
How commands, parameters, and responses are represented
Commands, parameters, and responses in this document conform to the
following conventions.
ATTENTION
If the unused DS-3 ports are not deprovisioned before a DS-1/VT
Mapper is installed, the DS-1 traffic will not be carried through the
DS-1/VT Mapper, even though the DS-1/VT Mapper is properly
provisioned.
DANGER
Risk of electrocution
Do not open the front panel of the inverter unless fuses F1,
F2, and F3 have been removed. The inverter contains
high-voltage lines. Until the fuses are removed, the
high-voltage lines are active, and you risk being
electrocuted.
DANGER
Damage to the backplane connector pins
Align the card before seating it, to avoid bending the
backplane connector pins. Use light thumb pressure to
align the card with the connectors. Next, use the levers on
the card to seat the card into the connectors.
CAUTION
Possible loss of service
Before continuing, confirm that you are removing the card
from the inactive unit of the peripheral module.
Subscriber service will be lost if you remove a card from
the active unit.

About this document xv
Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
Input prompt (>)
An input prompt (>) indicates that the information that follows is a command:
>BSY
Commands and fixed parameters
Commands and fixed parameters that are entered at a MAP terminal are shown
in uppercase letters:
>BSY CTRL
Variables
Variables are shown in lowercase letters:
>BSY CTRL ctrl_no
The letters or numbers that the variable represents must be entered. Each
variable is explained in a list that follows the command string.
Responses
Responses correspond to the MAP display and are shown in a different type:
FP 3 Busy CTRL 0: Command request has been submitted.
FP 3 Busy CTRL 0: Command passed.
The following excerpt from a procedure shows the command syntax used in
this document:
Procedure 1
At your location
1Manually busy the CTRL on the inactive plane by typing
>BSY CTRL ctrl_no
and pressing the Enter key.
where
ctrl_no is the number of the CTRL (0 or 1)
Example of a MAP response :
FP 3 Busy CTRL 0: Command request has been submitted.
FP 3 Busy CTRL 0: Command passed.

IPE product overview 1-1
Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
1 IPE product overview
The Intelligent Peripheral Equipment (IPE) provides a common peripheral for
the Meridian SL-100 product line. The IPE also provides a single common
peripheral with common line cards for the SL-100 system, Meridian 1 system,
and Meridian SuperNode system, as well as a cost-effective solution for
upgrades and extensions.
The IPE is a single-shelf module containing a controller card and 16 slots
available for analog and integrated voice and data (IVD) digital lines. IPEs are
packaged as modular, stackable units. Up to four IPEs can be contained in one
IPE column (IPEC). The Meridian power distribution cabinet (MPDC)
provides an external -48 V (dc) power supply to the IPE. The MPDC provides
dc power to the IPE lineup, which is separate from the standard SL-100 lineup.
The following figure shows four IPE modules contained in one IPEC. This
type of architecture and peripheral consolidation allows easy installation of
equipment and provides a flexible, cost-effective method of growth.
Figure 1 IPE column with four modules
Refer to Chapter 2, “IPE architecture", for additional information about the
IPEC hardware and configurations.
Status reporting with XSM functionality
Each IPEC requires one extended system monitor (XSM) that can be
configured as a master XSM or as a slave XSM. (Refer to Chapter 2 for
details.) One master XSM supports up to 64 columns using a daisy chain of
serial communication links. Thus, one master XSM can potentially support up
to256 (64 x 4) IPE modules. The master XSM reports status over an RS-232-C
Top cap
Pedestal
Maximum of four
IPE modules per
IPE Column (IPEC)

1-2 IPE product overview
555-4001-129 Standard 08.01 November 2000
communication link to the system central processing unit (CPU) and responds
to the system status inquiry messages.
The functionality provided by the XSM system monitor maintenance interface
allows operating company personnel to perform the following tasks:
• monitor the IPE system status using dedicated RS-232-C link(s) and be
alerted when status change occurs
• organize the IPE nodes into column/module and master/slave
configuration for system status monitoring
• perform system configuration changes and maintenance actions by using
the standard human-machine interface mechanism
• improve the system availability by having an autonomous power
monitoring and control system that provides up-to-the-second fault
detection data
Refer to Chapter 2, “IPE architecture", for additional information on the XSM.
Software required
The following table lists the software components required for IPE
functionality.
Table 1 MSL IPE functionality contents (Sheet 1 of 2)
Functionality Number Title
extended peripheral
equipment AD3064 Attendant Consoles on IPEs
AM0032 XPEC Call Processing - Phase I
AM0033 IPE PM Maintenance - Phase II
AM0034 IPE Downloading
AM0035 CC/IPE Feature Regression
AM0036 IPEService Orders/Query Commands
AM0037 IPE PM Maintenance - Phase I
AM0038 XPM Support of IPEs
AM0039 IPE Lines Table Control
AM0040 XPE Lines Maintenance - Phase I
AM0041 IPE PM Table Control/Call Processing

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Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
The Load Content Record (LCR) lists the current software load and Nortel
Networks functionalities. Similar information can be viewed on a MAP
terminal by entering the following command:
>SOC;SELECT ALL BRIEF;LEAVE
and pressing the Enter key.
AM0042 XPEC Monitor
AM0043 XPEC Message Translation
AM0044 XPEC Maintenance - Phase I
AM0103 XPEC Firmware
AM0124 XPEC Maintenance - Phase II
AM0125 IPE PM Maintenance - Phase III
AM0126 IPE Lines Maintenance - Phase II
AM0127 XPE Link Diagnostics
AM0128 Analog Lines on IPE
AM0129 XPEC Message Interface - Phase II
AM0130 XPEC Call Processing - Phase II
AM0131 XPM-IPE Interface Optimization
AM0132 Overload Control for IPEs
AM0133 IPE on RCC
AM0134 DTSR, Audits for IPEs
AM0135 PM Debug Interface to XPEC Monitor
AM0140 XPEC Self Test and Diagnostics
Firmware
A59007133 Enhanced IPE Controller
MSL Auto Recovery
DLM/IPE AD7674 Auto Recovery DLM/IPEs
Table 1 MSL IPE functionality contents (Sheet 2 of 2)
Functionality Number Title

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555-4001-129 Standard 08.01 November 2000
Controller card interfaces
The controller card provides primary interface and control functions for the
IPE. The controller card also receives messages from its host XPM, from line
cards, and from terminating devices such as sets and terminals. The controller
card communicates with its line cards through the IPE backplane by DS30X
connections. The DS30A interface between the line group controller (LGC)
and controller card provides a minimum of two and a maximum of six links.
The NT7D07AC controller card is the original card that supported the IPE
module. A new NT7D07BA controller card was introduced in MSL11 that
provides enhanced capabilities not supported on the NT7D07AC. Refer to
Chapter 2, “IPE architecture", for additional information on the controller
cards.
Call processing and feature software support connections between all terminal
types served by the IPE, digitalline module (DLM), line concentrating module
(LCM), line concentrating module enhanced (LCME), and trunk types served
by SL-100 digital trunk controller (DTC) and line trunk controller (LTC).
Enhanced IPE controllor card
The enhanced IPE controller (EXPEC) card is a new generation of the IPE
controller (XPEC) card that provides all of the functionality of the XPEC card
as well as some new capabilities.
The capabilities provided by the EXPEC controller card include the following:
• increased performance resulting from a faster CPU and an upgraded
operating system
• non-volatile Flash memory for storage for an IPE software load and a
modification to the MAPCI RTS command. These components allow
customers to restore the IPE to service with the software load stored in
Flash memory without the delay of downloading the software from the
computing module (CM)

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Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
For customers using Switch Manager, the GUI-based management platform
for the MSL-100, the EXPEC controller card provides additional capabilities
that are described below:
• an Ethernet interface and TCP/IP protocol software which allow the IPE to
communicate with Switch Manager and which provide increased
bandwidth for file transfer.
• the ability to transfer loads, utilizing the Ethernet port, while the IPE is in
an Inservice (INSV) or Inservice Trouble (ISTB) state. The load in flash
memory becomes active after the RTS PM FLASH CI command is issued.
Note 1: In certain circumstances, Switch Manager can transfer loads
while the IPE is in a manual busy (MANB) state. The IPE requires a
valid load with a valid IP address set in the IPE prior to the IPE being
placed in the MANB state. In addition, if the IPE is returned-to-service
(RTS) while Switch Manager is transferring a load, the connection to
Switch Manager is lost, resulting in an incomplete load file in the flash
memory of the IPE.
Note 2: For any communication with Switch Manager to occur, the IPE
must be provisioned/datafilled as an Ehhanced XPEC, with a valid IP
address, valid subnet mask, and valid gateway. A RTS must be
performed to set these parameters in the IPE. Any changes to these
parameters will require a subsequent RTS to activate the change.
• the ability to maintain multiple software load versions in Flash memory
and to designate the load to be booted when the IPE is returned to service
from Flash memory
• a set of modified log messages to report status information associated with
new hardware and software capabilities
RTS FLASH
The MAPCI RTS command has been modified to include a FLASH parameter
for support of the EXPEC card. The FLASH parameter is only available when
the IPE is posted at the PM level of MAPCI and if the IPE is datafilled as an
enhanced XPEC with an enabled IP port. This parameter allows you to return
the EXPEC card to service by directing the card to execute the active software
load from its on-board Flash memory.
Limitations and Restrictions
The CM must first be upgraded to MSL11 or higher before you can install a
new IPE with the EXPEC controller card.
To transfer load files to the IPE through its Ethernet interface with the Switch
Manager, your LAN must have one or more repository hosts. Each host must

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555-4001-129 Standard 08.01 November 2000
contain a copy of the load files and must provide a RFC-959 compliant FTP
server for accessing the files.
Transferring a load utilizing the Ethernet port is different than loading the IPE
using the LOADPM command. Switch Manager transfers loads to flash
memory, utilizing the ethernet port, while the IPE is in an INSV or ISTB state.
The load in flash memory becomes active after the RTS PM FLASH CI
command is issued.
Note: The LOADPM command, as previously supported, can only be
issued while the IPE is in a MANB state. This load becomes active after the
RTS PM command is issued..
Line cards The IPE supports the following line cards:
• digital line card (DLC), NT8D02
• analog line card (ALC), NT8D03
• analog message waiting line card (MLC), NT8D09
• line side T-1 interface card (LTI), NT5D11
• Meridian Integrated Conference Bridge (MICBII), NT5D51
• Meridian HomeOffice II (MHO II Release 2), NTQR02AA
Note: The LTI card is an analog card that emulates a DLC. The LTI card
interfaces with a T-1 link, carrying 24 channels to the SL-100 switch. This
card occupies two card slots in the IPE shelf.
Automated datafill and resource allocation for the IPE
This feature includes two functions for the intelligent peripheral equipment
(IPE):
• ringing resource allocation
• automated datafill for IPE line cards
Ringing resource allocation
Ringing resource allocation exploits the full capability of the IPE's ringing
generator. Currentlythere aretwotypes ofringing generatorsavailablefor IPE
use, NT6D42 and NT7D03. Each ringing generator supports simultaneously
ringing analog sets. NT6D42 supports sixteen and NT7D03 supports eight.
This feature makes more efficient use of ringing resources within the IPE. Due
to hardware limitations of ringing generators for analog phone sets, concurrent
ringing can only be supplied to a limited number of phones without physically
damaging the ringing generators.