Excalibur ISX 5312, ISX 5314 Operation Manual

Excalibur

T-1 Multiplexer

Installation and Operation

TM

ISX 5312/5314

15D30A-1/B 1/98

Milgo Solutions, Inc.

1619 N. Harrison Parkway
P.O. Box 407044
Fort Lauderdale, FL 33340-7044
Internet: http://www.milgo.com

Warranty

The period of warranty for the Excalibur ISX 5312/5314 T-1 Multiplexer starts on the
date of sale to the original end user and extends one year for software and one year for
hardware. Refer to Milgo Solutions, Inc. Limited Warranty for details.

Milgo Solutions requires a Return Material Authorization (RMA) prior to the return of
any equipment under the provisions of the warranty. Please contact your authorized
reseller or the nearest Milgo support center for details.

Second Edition, January, 1998

Excalibur and CMS are trademarks of Milgo Solutions, Inc. All other logos and product names are trademarks or registered
trademarks of their respective companies.

©1999 Milgo Solutions, Inc.

All rights reserved. No part of this work covered by the copyright hereon may be reproduced or copied in any form or by
any means — graphic, electronic, or mechanical, including photocopying, recording, taping, or information and retrieval systems
— without written permission of the publisher. Any software furnished under a license may be used or copied only in accordance
with the terms of such license.

Milgo Solutions, Inc. reserves the right to modify or revise all or part of this document without notice and shall not be
responsible for any loss, cost, or damage, including consequential damage, caused by reliance on these materials.

Printed in U.S.A.

ii

Milgo Solutions

Customer Information Contacts

CORPORATE HEADQUARTERS

Milgo Solutions, Inc.
1619 North Harrison Parkway
Sunrise, Florida 33323-2802, U.S.A.
Tel: [phone]
Fax: [phone]
Internet: http://www.milgo.com

Call Milgo's Corporate Headquarters if you
need the following information:

Press For:

1 Billing or invoice information
2 Orders, product delivery or availability, and

repairs
3 Sales
4 Field service
5 Training
6 Employee benefits and information
7 Corporate quality
8 Mailing or street addresses

For technical support, please contact your
supplier/distributor with details of the issue.

MILGO SERVICE CONTRACT CUSTOMERS:

For customers with Milgo Service Contracts or
service requirements, contact the following offices:

Milgo Solutions SA
Parc du Colombier
18 Rue Jules Saulnier
93206 Saint-Denis
Cedex, France
Tel: [phone]
Fax: [phone]

Milgo Solutions BV
Poortweg 14
2612 PA Delft
The Netherlands
Tel: [phone]
Fax: [phone]

ASIA/PACIFIC

Contact your Milgo affiliate support center. (See
next page for addresses and phone/fax numbers.)

MILGO AFFILIATE SUPPORT CENTERS:

AMERICAS Region

Milgo Solutions, Inc.
1619 North Harrison Parkway
Sunrise, Florida 33323-2802, U.S.A.
Tel: [phone]
Fax: [phone]
email: [e-mail]

AMERICAS
U.S. and U.S. Multinational

Milgo Solutions, Inc.
1619 North Harrison Parkway
Sunrise, Florida 33323-2802
Tel: [phone]
Fax: [phone]

EUROPE/MIDDLE EAST/AFRICA

Milgo Solutions, Ltd
Landata House, Station Road
Hook, Hampshire, RG279JF, England
Tel: [phone]
Fax: [phone]

EUROPE/MIDDLE EAST/AFRICA Region

Milgo Solutions, Ltd.
Landata House, Station Road
Hook, Hampshire, RG279JF, England
Tel: [phone]
Fax: [phone]
email: [e-mail]
Internet: www.milgo.com/emea
Bulletin Board Service: [phone] (PSTN)

[phone]/3/4 (ISDN)

iii

MILGO AFFILIATE SUPPORT CENTERS:

ASIA/PACIFIC Region

Milgo Solutions (Hong Kong), Ltd.
Sun House 6th Floor
181 Des Voeux Road, Central
Hong Kong
Tel: [phone]
Fax: [phone]

Milgo Solutions (Hong Kong) supports:

China (southern provinces)

•

Japan

•

Korea

•

Hong Kong

•

Macau

•

Taiwan

•

Milgo Solutions (Singapore) Pte Ltd.
26 Ayer Rajah Crescent, #04-06
Ayer Rajah Industrial Estate
Singapore 139944
Tel: [phone]
Fax: [phone]

Milgo Solutions (Singapore) supports:

Brunei

•

Indonesia

•

Malaysia

•

Philippines

•

Singapore

•

Thailand

•

Australia

•

New Zealand

•

Rest of Indochina

•

Cambodia
Laos
Myanmar
Vietnam

Milgo Solutions (Beijing), Inc.
Room 20659
Beijing Friendship Hotel
Beiing 100873
Tel: [phone]
Fax: [phone]

Milgo Solutions (Beijing) supports:

China (northern provinces)

•

iv

Manual Description

The Excalibur ISX 5312/5314 T-1 Installation and Operation manual provides the
information you need to properly install, operate, and troubleshoot this unit. It assumes
you are familiar with basic data communications principles and terminology.

This manual consists of the following chapters:

About This Manual

•

Chapter 1, Introduction

capabilities and descriptions of all standard features.

•

Chapter 2, Installation

cable connections, and provide AC power.

•

Chapter 3, Using the Front Panel

and LCD screen to move through the menus and enter commands. It explains
how to enter T7 and IP addresses and how to establish password protection. It
also explains how to establish the user identifier and password required for
access from Telnet.

•

Chapter 4, Defining Operating Parameters

ISX 5312/5314 so that it performs properly in your particular network
environment. This section also includes descriptions of each operating parameter
and recommended settings for typical applications.

•

Chapter 5, Online Operation

the ISX 5312/5314 is transmitting and receiving data. These procedures include
monitoring current operating status, viewing local error statistics from 24-hour
registers, and viewing stored alarms.

•

Chapter 6, Troubleshooting

diagnostic tests to isolate the source of malfunctions in your network.

contains an overview of the ISX 5312/5314's

shows you how to place the unit, make the necessary

describes how to use the front panel buttons

explains how to configure the

describes the procedures you can perform while

explains how to use the ISX 5312/5314's built-in

•

Appendix A, Technical Specifications

•

Appendix B, Cable Diagrams

• Appendix C, Regulatory Information

v

About This Manual

Conventions

The following typographical conventions are used in this manual:

• References to labeled parts of a device, such as buttons and connectors, are
shown in

boldface

. For example:

The

connector is located on the ISX 5312/5314’s rear panel.

DS1A

• References to text that appears on the control panel LCD screen are shown in

this font

. For example:

Press the button beneath

to enter the Configuration menu.

Confg

• In the front panel illustrations that accompany step-by-step instructions, the gray
shading indicates which button to press. For example:

1. Press the button beneath

T

E x c a l I S X 5 3 1 4 D T 1 S A

L o c a l A d d r R T N

1

Boldface text

•

• Angle brackets (

2

3

denotes text you need to enter.

) indicate that you choose the text to enter based on the

< >

Local

.

4

Escape Top

<

>

description inside the brackets. Do not type the angle brackets when entering the
command. Example: if command syntax is
you enter

2400

.

ISX 5314> C <desired baud rate>

,

vi

[ENTER]

•

indicates that you must press a special keyboard key such as Enter or

Control.

• Slash character (

Local/Confg

Caution:

Cautions precede information that may result in equipment damage or major

) separates menu and option names in instructions. Example:

/

identifies the Configuration option under the Local menu.

failure if the given procedures are not followed.

Table of Contents

Chapter 1 - Introduction

Overview .......................................................................................................................................................... 1-1

Operating Environment.................................................................................................................................... 1-2

Models.............................................................................................................................................................. 1-4

Standalone Model...................................................................................................................................... 1-4

Central Site Model..................................................................................................................................... 1-5

Standard Features............................................................................................................................................. 1-6

AT&T ASDS Compatibility...................................................................................................................... 1-6

Menu-Driven Front Panel Display ............................................................................................................1-6

Password Protection ..................................................................................................................................1-6

Integral DSU/CSU..................................................................................................................................... 1-7

Protection Switching .................................................................................................................................1-7

Drop-and-Insert Capability........................................................................................................................ 1-7

T7 via Dial Modems.................................................................................................................................. 1-7

Dial-In Access for Front Panel Emulation ................................................................................................ 1-8

Alarm Reporting........................................................................................................................................ 1-8

ESF Diagnostic Monitoring....................................................................................................................... 1-9

Built-In Diagnostic Tests........................................................................................................................... 1-9

Downloadable Software ............................................................................................................................1-9

CMS T7 Compatibility ............................................................................................................................ 1-10

Integral SNMP Agent ..............................................................................................................................1-10

Telnet Client Support ..............................................................................................................................1-11

Front Panel Emulation............................................................................................................................. 1-12

Management Interfaces ...........................................................................................................................1-13

External Dial Backup............................................................................................................................... 1-14

Chapter 2 - Installation

Overview .......................................................................................................................................................... 2-1

Unit Placement................................................................................................................................................. 2-2

Setting DTE Port Interface (Central Site Model Only) ...................................................................................2-2

Setting Switches (Central Site Model Only).................................................................................................... 2-4

Cable Connections ...........................................................................................................................................2-5

Connecting to the DTEs ............................................................................................................................2-7

Connecting to the T-1 Line or to External Equipment.............................................................................. 2-8

Connecting to External Dial Backup Device............................................................................................. 2-9

Connecting to NMI Port for T7 Network Management ............................................................................2-9

Connecting to NMI Port for PPP/SLIP Network Management............................................................... 2-10

Connecting to NMI Port for Front Panel Controller or Console Port Applications................................ 2-13

Connecting to the Ethernet 10BaseT Connector ..................................................................................... 2-13

Connecting to a Dial Modem .................................................................................................................. 2-14

Connecting to an External Alarm Device (Central Site Model Only) ....................................................2-14

DMM Connector (Central Site Model Only) ..........................................................................................2-15

vii

Table of Contents

AC Power Connection ................................................................................................................................... 2-15

Verifying the Ethernet Link Connection ....................................................................................................... 2-16

Chapter 3 - Using the Front Panel

Introduction ..................................................................................................................................................... 3-1

Front Panel Components ................................................................................................................................. 3-1

What You Will See First ................................................................................................................................. 3-2

Moving Through the Menus ............................................................................................................................ 3-2

Alarm Display.................................................................................................................................................. 3-3

Entering the T7 Address .................................................................................................................................. 3-3

Entering IP Addresses ..................................................................................................................................... 3-5

Entering the Unit’s Local IP Address ....................................................................................................... 3-5

Entering the Gateway Address.................................................................................................................. 3-7

Entering the Subnet Mask ......................................................................................................................... 3-7

Enabling Traps .......................................................................................................................................... 3-7

Establishing Password Protection.................................................................................................................... 3-8

Locking and Unlocking Front Panel Functions ........................................................................................ 3-8

Changing the Password........................................................................................................................... 3-10

Establishing the Telnet Logon Sequence ...................................................................................................... 3-11

Entering the Telnet Security Submenu ................................................................................................... 3-12

Entering the User Identifier .................................................................................................................... 3-13

Entering the User Password .................................................................................................................... 3-16

Session Timeout...................................................................................................................................... 3-16

Using Console Port Interface......................................................................................................................... 3-17

Enabling Console Port Interface ............................................................................................................. 3-17

Autobaud ................................................................................................................................................. 3-17

Logging In............................................................................................................................................... 3-18

Display Screens....................................................................................................................................... 3-18

Terminal Key Functions.......................................................................................................................... 3-19

Logging Off............................................................................................................................................. 3-20

Chapter 4 - Defining Operating Parameters

Overview.......................................................................................................................................................... 4-1

Entering the Configuration Menu.................................................................................................................... 4-1

Defining Individual Parameters....................................................................................................................... 4-3

DSU Parameters .............................................................................................................................................. 4-5

Location..................................................................................................................................................... 4-6

Transmit Clock.......................................................................................................................................... 4-6

System Clock ............................................................................................................................................ 4-9

Beeper ..................................................................................................................................................... 4-10

Alarm LED.............................................................................................................................................. 4-11

Network Loop Enable ............................................................................................................................. 4-11

Clock Tolerance ...................................................................................................................................... 4-12

Tolerance Limit....................................................................................................................................... 4-12

Busy Signal Bits...................................................................................................................................... 4-12

Access Protection Capability .................................................................................................................. 4-12

viii

Table of Contents

Hot Spare .................................................................................................................................................4-18

Network Management System .......................................................................................................................4-23

Protocol.................................................................................................................................................... 4-23

Speed .......................................................................................................................................................4-24

NTS.......................................................................................................................................................... 4-24

T7 Via Dial Modems ...............................................................................................................................4-24

Remote T7 Via a DS0 Channel ...............................................................................................................4-41

Port Parameters .............................................................................................................................................. 4-43

DS0 .......................................................................................................................................................... 4-44

Rate.......................................................................................................................................................... 4-44

Remote T7 ...............................................................................................................................................4-44

Connection............................................................................................................................................... 4-45

RTS Control............................................................................................................................................. 4-50

DTR Control ............................................................................................................................................4-50

DSR Control ............................................................................................................................................ 4-51

Transmit Clock ........................................................................................................................................ 4-51

T7 Mode ..................................................................................................................................................4-52

Ring Signal Indicator............................................................................................................................... 4-53

T-1 Line Parameters....................................................................................................................................... 4-53

Frame ....................................................................................................................................................... 4-53

Code......................................................................................................................................................... 4-53

Line Build-Out......................................................................................................................................... 4-54

Channel.................................................................................................................................................... 4-54

Alias......................................................................................................................................................... 4-59

Daisy Chain .............................................................................................................................................4-59

Alarms............................................................................................................................................................ 4-62

Red Alarm................................................................................................................................................ 4-63

Yellow Alarm .......................................................................................................................................... 4-63

Blue Alarm ..............................................................................................................................................4-63

Controlled Slip Alarm .............................................................................................................................4-63

ES Alarm .................................................................................................................................................4-64

BPV Alarm .............................................................................................................................................. 4-64

LOS Alarm ..............................................................................................................................................4-64

Reference Clock Changed Alarm............................................................................................................ 4-64

DTE Failed Alarm ................................................................................................................................... 4-64

Clock Tolerance Failed Alarm ................................................................................................................4-65

Switched to Dial Backup Alarm.............................................................................................................. 4-65

Switched to Dedicated Alarm.................................................................................................................. 4-65

Dial Backup Connection Failed Alarm ...................................................................................................4-65

APC Switch to Protection Line Alarm .................................................................................................... 4-65

Hot Spare Switch Alarm.......................................................................................................................... 4-65

Network Loops ........................................................................................................................................ 4-66

DSU Alarm Parameters ........................................................................................................................... 4-66

T-1 Line Alarm Parameters ..................................................................................................................... 4-69

Factory Submenu ...........................................................................................................................................4-73

User Strap Submenu....................................................................................................................................... 4-73

Reset Submenu............................................................................................................................................... 4-74

New Software Submenu................................................................................................................................. 4-75

ix

Table of Contents

Chapter 5 - Online Operation

Overview.......................................................................................................................................................... 5-1

Entering the Status Menu ................................................................................................................................ 5-1

DSU Status....................................................................................................................................................... 5-3

NMS Status ............................................................................................................................................... 5-8

APC Status .............................................................................................................................................. 5-12

Hot Spare Status...................................................................................................................................... 5-16

Port Status...................................................................................................................................................... 5-17

T-1 Line Status .............................................................................................................................................. 5-20

Error Statistics ............................................................................................................................................... 5-25

Local and Telco Registers....................................................................................................................... 5-25

Network Receive Register ...................................................................................................................... 5-27

Viewing Error Statistics.......................................................................................................................... 5-28

Alarm Status .................................................................................................................................................. 5-31

Diagnostic Tests ............................................................................................................................................ 5-35

Using External Dial Backup Feature............................................................................................................. 5-40

Enabling Dial Backup Mode................................................................................................................... 5-40

Configuring Operating Parameters ......................................................................................................... 5-43

Clock Source During Dial Backup.......................................................................................................... 5-47

Automatic Dial Backup Failures............................................................................................................. 5-48

Initiating a Dial Backup Connection Manually ...................................................................................... 5-49

Disconnecting a Dial Backup Connection Manually.............................................................................. 5-49

Dial Backup Mode Diagnostics .............................................................................................................. 5-50

Chapter 6 - Troubleshooting

Overview.......................................................................................................................................................... 6-1

Initial Checks................................................................................................................................................... 6-1

Management Paths During Network Outages ................................................................................................. 6-1

T-1 Line Pattern Test....................................................................................................................................... 6-2

DTE Pattern Test ............................................................................................................................................. 6-3

Digital Loop Test............................................................................................................................................. 6-4

V.54 Digital Loop Test.................................................................................................................................... 6-4

Remote PN127 Digital Loop Test ................................................................................................................... 6-5

Local Line Loop .............................................................................................................................................. 6-5

Local Channel Loop ........................................................................................................................................ 6-6

Bundle Loop .................................................................................................................................................... 6-6

Telco Loops ..................................................................................................................................................... 6-6

Line Loopback .......................................................................................................................................... 6-6

Payload Loopback..................................................................................................................................... 6-7

Activating the Tests......................................................................................................................................... 6-7

DTE Tests.................................................................................................................................................. 6-8

T-1 Line Tests ......................................................................................................................................... 6-11

RTN Function ................................................................................................................................................ 6-17

Testing Alarm Relays (Central Site Model Only)......................................................................................... 6-17

x

Important Safety Instructions

1. Never install telephone wiring during a lightning storm.

2. Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.

3. Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at

the network interface.

4. Use caution when installing or modifying telephone lines.

5. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote

risk of electrical shock from lightning.

6. Do not use the telephone to report a gas leak in the vicinity of the leak.

Caution: To ensure compliance with government regulations, do not install or operate this
product until you have read the information contained in Appendix C.

xi

Excalibur ISX 5314 T-1 Multiplexer - Standalone Model

Overview

Chapter 1

Introduction

The ExcaliburTM Integrated Services Express (ISX) 5312/5314 multiplexer connects
high-speed bridges, routers, and other Data Terminal Equipment (DTE). It provides
economical access to high-speed public/private T-1/FT1 and Frame Relay services,
while avoiding the complexity of a full-featured multiplexer. The unit has a built-in
Data Service Unit (DSU)/Channel Service Unit (CSU), allowing direct connection to the
T-1 line or Frame Relay service and eliminating the need for expensive external
equipment. Models are available with one or two long-haul network interfaces.

The Excalibur ISX 5312 provides two V.35 DTE ports, and the Excalibur ISX 5314
provides four V.35 DTE ports, which allows you to run more data applications on one
unit. The DTE ports each support N by 56 or N by 64 Kbps applications, providing
maximum carrier compatibility. The ISX 5312/5314 can interconnect to the Excalibur
ISX 5010 multiplexer or to other vendors’ T-1 interfaces.

For even more comprehensive network control, the Excalibur ISX 5312/5314’s integral
MIB-II-compliant SNMP agent provides a standards-based management interface. It
allows you to manage your complete network via SNMP from either a Communications
Management Series (CMS

The ISX 5312/5314 provides an asynchronous PPP (Point-to-Point Protocol) or SLIP
(Serial Line Internet Protocol) SNMP interface and an Ethernet (10BaseT) interface,
which provides a direct connection to the LAN. With a direct connection, you save the
expense of dedicating an expensive router port or providing an additional LAN server to
route your SNMP traffic. You can also select Milgo’s proprietary management protocol
for management from a CMS 400 T7 manager.

A CMS 400 system provides a custom SNMP application with a new sophisticated GUI
(Graphical User Interface). The SNMP application can also run under HP OpenView
Windows and UNIX, and Tivoli TME 10 NetView for AIX. The application makes
ISX 5312/5314 configuration and operation quick and intuitive.

The ISX 5312/5314 provides full Telnet client support. This feature allows service
personnel to access a specific ISX 5312/5314 for configuration or diagnostic purposes,
using commonly available software running on a minimal platform. Additionally, Milgo
offers an optional Windows-based program that provides basic configuration capability
by emulating the ISX 5312/5314’s front panel.

TM

) 400 or generic SNMP manager.

for

1-1

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Operating Environment

The ISX 5312/5314 provides one or two long-haul network interfaces to full or fractional
T-1 links, or to Frame Relay services. It performs the time slot interchange (TSI)
function, which enables it to connect a DS0 channel from one T-1 interface to the other
T-1 interface.

Access to management capabilities is provided via an NMI port or via an Ethernet
(10Base-T) port. The ports are located on the ISX 5312/5314’s rear panel. The NMI
port is an asynchronous interface that provides access for SNMP, T7, Front Panel
Controller Application for Windows, or Telnet management. The SNMP agent can be
connected to via an asynchronous external router, a terminal server, a Milgo INX-NTS,
or a CMS 802X. The CMS 400 T7 manager can be connected to via an EDM, a Milgo
NMS 802X, or a Milgo CMS 802X. The Front Panel Controller Application for
Windows can be connected to directly from a PC serial port, or via a dial connection, a
terminal server, an INX-NTS, a NMS 802X, or a CMS 802X. The Telnet agent can be
connected to via a terminal server, an INX-NTS, or a CMS 802X. The Ethernet
(10Base-T) port provides a direct connection to the LAN, providing access for SNMP,
Telnet, and Front Panel Controller Application for Windows management.

The DTE ports each support N x 56 Kbps and N x 64 Kbps, where N = 1 to 24.

Figures 1-1 through 1-4 show typical Excalibur ISX 5312/5314 applications.

SNMP

Manager

SNMP

Ethernet

Port Connection

Kbps

Nx56/64

Kbps

ISX 5312/5314

T-1 Line

APC T-1 Line

T-1

Network

T-1 Line

ISX 5312/5314

LAN Bridge/

Router

Nx56/64

ISX 5010

Subrate

LAN LAN

Multiplexer

Nx56/64

Multiplexer

Port Connection

Kbps

ISX 5010

Subrate

SNMP

Ethernet

LAN Bridge/

Router

Nx56/64
Kbps

Figure 1-1. ISX 5312/5314 with Two Network Interfaces and SNMP via a Direct

Ethernet Connection to the LAN

1-2

T-1 Line

PBX
PPP/SLIP PPP/SLIP

Introduction

SNMP

Manager

LAN

OR

LAN

LAN Bridge/

Router

Nx56/64

ISX 5010

Subrate

Multiplexer

Kbps

Nx56/64

Kbps

ISX 5312/5314

NMI NMI

T-1 Line

T-1

Network

T-1 Line

ISX 5312/5314

Nx56/64

Kbps

ISX 5010

Subrate

Multiplexer

LAN Bridge/

Router

Nx56/64
Kbps

Figure 1-2. ISX 5312/5314 with Two Network Interfaces and SNMP via an

External Router

LAN Bridge/Router

Video

Nx56/64 Kbps
Nx56/64 Kbps

ISX 5312/5314

NMI

T-1 LINE

Fractional

T-1 LINE

T-1

Network

T-1 LINE

ISX 5312/5314

Nx56/64 Kbps
Nx56/64 Kbps

LAN

OR

LAN

LAN Bridge/Router

Video

CMS T7

Nx56/64 Kbps

ISX 5312/5314

CMS 400

EDM

Figure 1-3. ISX 5312/5314 with One Network Interface and T7 Management

1-3

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Internet

ISX 5314

ISX 5314

ISP HQ

Frame

Relay

ISP POP

ISX 5312 ISX 5312ISX 5312

Router Router

Corporate

Account

ISX 5312

Corporate

Account

Router

T-1 or

Frame

Relay

Router

Figure 1-4. ISX 5312/5314 Internet Service Provider Application

Corporate Account

ISX 5312

Models

The Excalibur ISX 5312 and Excalibur ISX 5314 come in a variety of models to suit
your needs. Models can be customized as follows:

• Standalone or high-density central site (the ISX 5312 is available only as a

• One or two DS1 long-haul network interfaces

Standalone Model

The standalone Excalibur ISX 5312/5314 (see photo facing page 1-1) is housed in a 3" x
8" x 12" (7.6 cm x 20.3 cm x 30.5 cm) plastic housing. The housing consists of a top
and bottom half, fastened together with two screws. The front and rear panels slide
vertically into the bottom half of the housing and are held in place by the top half. The
unit can be placed on any flat surface or it can be mounted in a standard 19-inch rack
(using an optional kit).

The unit's front panel contains an LCD information screen, two LED indicators, and
eight pushbuttons. The rear panel contains the interface connectors used to attach to the
DTEs, T-1 line(s), and other network components. The unit is powered by an external
power supply.

standalone model)

1-4

Central Site Model

The central site Excalibur ISX 5314 consists of a printed circuit (p.c.) card and a
transition board (rear panel) that are designed for installation in the high-density
Excalibur Card Carrier (Figure 1-5) or ISX 5010 chassis (Figure 1-6).

The Excalibur Card Carrier can house up to 16 p.c. cards in a space just 10” (25 cm) high
by 17” (43 cm) wide. Up to six card carriers can be installed in a single 6-foot rack,
providing housing for up to 96 ISX 5314 central site units.

The Excalibur Card Carrier comes with a master control panel that provides single-point
control for all units in the rack. The control panel has eleven buttons and a 7-line by 32­character display that let you select any installed unit. Once you select a unit, you can
control it in the same manner as the standalone model.

The ISX 5010 chassis is available in 3-, 6-, and 16-slot models. ISX 5314 units housed
in an ISX 5010 chassis can be controlled using an ASCII terminal connected to the
console port (NMI) on the unit’s transition board.

Introduction

OE

Ecali ur

SE
ES

OE

Figure 1-5. Excalibur Card Carrier

Access Multiplexer ISX 5010

Figure 1-6. ISX 5010 6-Slot Chassis

1-5

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Standard Features

The Excalibur ISX 5312/5314 comes with a full complement of standard features, as
described in the following sections.

AT&T ASDS Compatibility

The ISX 5312/5314 is compatible with AT&T Publication 62411 for both SF (Super
Frame) and ESF (Extended Super Frame) formats. The ISX 5312/5314 supports all ESF
diagnostics per AT&T 54016 and ANSI T1.403, and supports AMI (Alternate Mark
Inversion), AMIB7 (Alternate Mark Inversion with Bit 7 Stuffing), AMIZS (Alternate
Mark Inversion with Zero Suppression), or B8ZS (Bipolar with Eight Zero Substitution)
line codes. Independently selectable, alternate, and contiguous DS0 placement is
supported, ensuring carrier compatibility. DS0 channels can be assigned to a particular
T-1 line. This feature allows you to quickly and easily reroute data to bypass a failed
T-1 link.

Menu-Driven Front Panel Display

The Excalibur ISX 5312/5314 has a menu-driven front panel display that makes
monitoring, configuring, and testing the ISX 5312/5314 quick and easy. The two-line
LCD screen guides you through the various operating procedures by displaying menu
prompts on the top line and selectable options on the bottom line. To select an option,
simply press the button beneath it. Figure 1-7 shows a typical menu display in which
you are prompted to select the source of timing signals for the ISX 5312/5314's transmit
clock.

L

D S U T x C l o c k = D T E 1

I n t r n D T E 1 D T E 2 D T E 3 >

1

23

Figure 1-7. Typical Menu Display

Password Protection

Escape Top

4

<

>

The Excalibur ISX 5312/5314 provides a password protection feature to prevent users
from accessing certain front panel functions. This feature enables you to lock out either
or both of the following functions from users who do not enter the proper password:
configuration and diagnostic testing. The password can be any three-character
alphanumeric code.

1-6

Integral DSU/CSU

The ISX 5312/5314 has an integral DSU/CSU, which allows direct connection to the T-1
line and allows the carrier to access performance register information for monitoring
purposes. This feature eliminates the need for an external access device and minimizes
space requirements. For units with two T-1 line interfaces, one DSU/CSU can be used
for protection switching or the drop and insert function.

Protection Switching

DS0 channels can be assigned to a particular T-1 link and automatically switched to a
backup link in the event the primary link fails. This feature is available only for units
with two T-1 line interfaces. The ISX 5312/5314 provides two methods of protection
switching. Both can be enabled or disabled from the front panel.

• Access Protection Capability (APC) - Accunet’s T1.5 APC service function
provides the automatic transfer between two Accunet T1.5 access facilities when
one T-1 line fails. The criteria required for the transfer are defined in AT&T
Technical Reference 54017A1.

Introduction

• Hot Spare - The ISX 5312/5314 provides the automatic transfer to a spare T-1 line
when the primary T-1 line fails, or from the spare line to the primary line when the
primary line is in good state. The criteria required for the transfer are Red, Blue,
and Yellow alarm conditions as defined in AT&T Technical Reference 54016.

Drop-and-Insert Capability

Drop-and-insert capability at the DS0 level allows you to connect a T-1 PBX or other T­1 device with underutilized bandwidth to the ISX 5312/5314. This feature eliminates the
need for a separate T-1 circuit to support the PBX voice application or other data
applications.

T7 via Dial Modems

The ISX 5312/5314 provides a T7 path via dial modems and a Public Switched
Telephone Network (PSTN) line. You can use Milgo’s ALM 3226 dial modem or any
dial modem that supports Hayes AT operation. The modem link can be established
automatically, manually, or in response to CMS network management commands.
When set for automatic operation, the ISX 5312/5314 automatically initiates calls in
response to user-selectable criteria (Red, Blue, and Yellow alarms). With manual
operation, calls can be initiated by pressing the proper buttons on the ISX 5312/5314’s
front panel or the CMS console.

1-7

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Dial-In Access for Front Panel Emulation

The ISX 5312/5314 provides dial-in access via a dial modem and a Public Switched
Telephone Network (PSTN) line. You can use a Milgo dial modem or a generic modem
that supports Hayes AT operation. The modem must be set for Auto-Answer. From the
ISX 5312/5314’s front panel, the Protocol parameter in the NMS submenu must be set to
None or Ethernet. When communication is established via the modem link, front panel
emulation can be initiated using Milgo’s optional Front Panel Controller Application for
Windows.

The dial-in access feature allows you to use the entire T-1 bandwidth for data and still
have control and management of remote units via the modem link. You can also use the
modem to provide a backup command data path to a remote ISX 5312/5314 as shown in
Figure 1-8.

Figure 1-8. Dial Modem Providing a Backup Command Data Path to a Remote

Alarm Reporting

To alert you to potential problems in the network, the ISX 5312/5314 reports a wide
variety of alarm conditions. The conditions are simultaneously reported and displayed
on the ISX 5312/5314's front panel. You can select the time interval before a T-1 line
alarm is reported, and you can independently enable or disable each DSU and T-1 line
alarm. You can also set the ISX 5312/5314 to sound a beeper when it detects an alarm
condition. Alarm conditions are also reported to the T7 manager or to SNMP manager
as traps (if the network is so equipped). The ISX 5312/5314 stores the reported alarms
in memory.

Ethernet Ethernet

NMI
Port

ISX 5312/5314 ISX 5312/5314

LAN LAN

Modem

NMS Primary Command Path

T-1

Network

NMS Backup Command Path

PSTN

Modem

NMI
Port

ISX 5312/5314

1-8

ESF Diagnostic Monitoring

The ESF Diagnostic Monitoring feature allows you to monitor the T-1 circuit's
performance from the front panel or from a T7 or SNMP manager’s console (if the
network is so equipped) without interrupting normal operations. The ISX 5312/5314
supports the ESF Facility Data Link (FDL) for real time error monitoring of the T-1
facility. The ISX 5312/5314 provides separate 24-hour local, Telco, and network
registers, which provide the error statistics for the current 15-minute interval and for the
last 24 hours. Error statistics displayed include:

• Percentage of line availability

• ES - Errored Seconds

• CSS - Controlled Slip Seconds

• LOFC - Loss of Frame Count

• CRC-6 - CRC-6 errors

Introduction

• BPV - Bipolar Violations

• FBE - Frame Bit Error

• COFA - Change of Frame Alignment

• SES - Severely Errored Seconds

• BES - Bursty Errored Seconds

Built-In Diagnostic Tests

The Excalibur ISX 5312/5314 contains diagnostic tests that help you quickly isolate the
source of network malfunctions. From the front panel, you can initiate DTE loopback
and bidirectional local channel and local line loopback tests. You can loop single,
contiguous, or all channels on a T-1 line. You can also loop all the channels assigned to
two T-1 lines in a connection. The ISX 5312/5314 also provides a built-in QRSS test
pattern generator, which eliminates the need for separate BERT test equipment.

Downloadable Software

The ISX 5312/5314 provides a download kernel that allows you to quickly and easily
download software from your PC console via a direct connection or a modem
attachment. You can also use a CMS T7 network manager to download software across
the network to remotely located ISX 5312/5314 units.

1-9

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

During software downloading, data continues to flow through the unit until the unit is
rebooted to activate the new software. A Windows-based software download package
can be accessed from the Milgo Home Page on the Internet.

CMS T7 Compatibility

For networks that require comprehensive management, testing, and control features, the
Excalibur ISX 5312/5314 can operate with a CMS 400 T7 manager. The CMS 400
provides the following capabilities:

• ESF Diagnostic Monitoring - allows you to monitor the T-1 circuit's performance.
Error statistics displayed include the following: percentage of line availability,
ES, CSS, LOFC, CRC, BPV, FBE, COFA, SES, BES, severely errored framing
event, frame synchronization bit error, line code violation event, and Payload
Loopback activated. Error statistics are displayed for the current 15-minute
interval and for the past 24 hours in ninety-six 15-minute intervals.

• Database management - provides you with a complete record of your network's
structure, including all sites, components, and channels. A network map display is
available as a visual aid when troubleshooting large networks.

• Event files - keep a record of all significant network events (alarms, tests, etc.).

• Network management reports - consolidate network status information so that you
can analyze your network's overall performance. Reports can be generated on
every major database item.

• Network diagnostics - scan all CMS-compatible components in the network,
reporting any irregular conditions. Tests can be run on any network component
from the central site console. Alarms can be received from anywhere in the
network.

• Serial number reporting - assists in inventory and identification of network
ISX 5312/5314s. Each ISX 5312/5314 is assigned a serial number, which is
reported to the system upon request.

• EIA Lead Status Monitoring - allows you to scan the status of the DTE control
leads.

Integral SNMP Agent

For networks that require comprehensive management, testing, and control features, the
ISX 5312/5314’s integral MIB-II-compliant SNMP agent provides a standards-based
management interface. It allows you to manage your complete network via SNMP from
a CMS 400 or generic SNMP manager.

1-10

Introduction

To simplify network management, Milgo offers Excalibur ISX 5312/5314 management
for Windows and UNIX. This SNMP-based application provides an intuitive graphical
interface tailored specifically for Excalibur ISX products. You can use this application
to fully configure the ISX 5312/5314, monitor its performance, display statistics, and
conduct tests, without having to send individual Set and Get commands. This
application can run under Milgo’s CMS 400 management platform, as well as under HP
OpenView

for Windows and UNIX, and Tivoli TME 10 NetView for AIX.

The SNMP is formally specified in a series of related RFC documents. The Excalibur
ISX 5312/5314 complies with the following RFCs:

• RFC 1155 - Structure and Identification of Management Information for TCP/IP­based internets: SMI.

• RFC 1156 - Management Information Base for Network Management of TCP/IP­based internets: MIB-1.

• RFC 1157 - A Simple Network Management Protocol.

• RFC 1212 - Concise MIB Definitions.

• RFC 1213 - Management Information Base for Network Management of TCP/IP­based internets: MIB-II.

• RFC 1406 - DS1 and E1 Interface Types.

• RFC 1215 - A Convention for Defining Traps for Use with the SNMP.

• RFC 1659 - Definitions of Managed Objects for RS-232-Like Hardware Devices.

For your convenience, the Excalibur ISX 5300 MIB, which supports the ISX 5312/5314,
is published on the Internet. You can download the .ASN file from the Milgo Home
Page located at http://www.milgo.com/rdg/customer/support/mibs/mibarch.htm.

Telnet Client Support

The ISX 5312/5314 provides Telnet client support. Network management via Telnet can
be performed from any workstation in the network that has TCP/IP and a Telnet
application. By entering a valid logon sequence, you can perform operating procedures
as if you were sitting at the ISX 5312/5314’s front panel. This feature allows service
personnel to access a specific ISX 5312/5314 for configuration or diagnostic purposes,
using commonly available software running on a minimal platform.

1-11

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

For security purposes, access from Telnet is protected by a user-configurable logon
sequence consisting of a user identifier and a password. A Telnet session is established
only if the logon entries match the user identifier and password stored in the non-volatile
database of the ISX 5312/5314. The ISX 5312/5314 supports only one user identifier
and one password. Once the Telnet session is established, the user may log off at any
time by pressing the logoff key. Optionally, the ISX 5312/5314 may initiate the logoff
sequence automatically if no activity is detected for a user-selectable time period. The
ISX 5312/5314 allows only one Telnet session at a time. The ISX 5312/5314 responds
with a Busy message to additional Telnet session requests.

By entering commands from the ISX 5312/5314’s front panel, you can change the user
identifier and password required for access from Telnet. You can also specify the
amount of time a Telnet session may remain inactive before it is automatically
terminated by the ISX 5312/5314. Telnet supports all features and tests available from
the unit’s front panel.

Note: The NMI port configuration parameters (protocol, speed, NTS), IP address, and
Gateway address should not be changed using Telnet. Changing these parameters results
in terminating the client session.

The Excalibur ISX 5312/5314 complies with the following RFCs:

• RFC 854 - Telnet Protocol Specification.

• RFC 855 - Telnet Option Specification.

Front Panel Emulation

A Front Panel Controller Application for Windows 3.1/ Windows 95/ Windows NT is
available from Milgo. The application provides remote front panel access to SNMP­managed ISX 5312/5314s from your Windows workstation. Access to the application is
provided via a direct connection, or a dial modem via the NMI port, or SNMP via
PPP/SLIP on the NMI port, or SNMP over Ethernet. By entering a remote unit’s
Internet Protocol (IP) address or host name, you can perform operating procedures as if
you were sitting at that unit’s front panel. The application provides:

• Graphic display of the unit’s front panel

• Community string security

• Automatic screen update

• Configurable timeouts

• Windows socket interface

1-12

Note: The NMI port configuration parameters (protocol, speed, NTS), IP address, and
Gateway address should not be changed using this application. Changing these
parameters results in terminating the ability to manage the unit.

Management Interfaces

Access to management capabilities is provided via an Ethernet (10Base-T) port or via an
NMI port. The Ethernet (10Base-T) port provides a direct connection to the LAN,
providing access for SNMP, Telnet, and Front Panel Controller Application for
Windows management. The NMI port provides access to the management services
listed in Table 1-1.

Network

Management

Service

Introduction

Table 1-1. NMI Port Management Interfaces

Protocol

Connection Interface Device

SNMP PPP/SLIP Router, terminal server, Milgo INX-NTS,

or CMS 802X

CMS 400 T7 T7 EDM, NMS 802X, or CMS 802X

Front Panel
Controller
Application for
Windows

T7/PPP/SLIP Dial modem, terminal server, INX-NTS,

NMS 802X, or CMS 802X. (Can also be
connected to directly from a PC serial
port)

Telnet PPP/SLIP Terminal server, INX-NTS, or CMS 802X

Console Port Console

Protocol

Direct or dial-in connection to VT-100­compatible ASCII terminal

With a direct Ethernet connection to the LAN, you save the expense of dedicating an
expensive router port or providing an additional LAN server to route your management
traffic. The Ethernet interface supports IEEE 802.3 and Ethernet Standards for Media
Access Control formats, and supports TCP/IP protocols.

Notes: Access from Token Ring networks is supported only via the asynchronous
PPP/SLIP connection and an asynchronous router, a terminal server, or a CMS 8025.

The PPP/SLIP and the Ethernet connections are used exclusively for Telnet, the Front
Panel Controller Application for Windows, or SNMP network management access.
They cannot be used for the transfer of customer data.

1-13

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Green and yellow LED indicators are located on the Ethernet interface. The green
indicator allows you to monitor the Ethernet link’s operating status at a glance. The
yellow indicator is On for a short period each time the Ethernet controller transmits a
packet.

External Dial Backup

The External Dial Backup feature is available only with Excalibur ISX 5312/5314
multiplexer models equipped with one network interface. It is not provided for models
equipped with two long-haul network interfaces.

The External Dial Backup feature operates in both T-1 and FT-1 environments. You can
configure one DTE port (ISX 5312) or two DTE ports (ISX 5314) to provide dial backup
for the unit’s dedicated DTE port(s). The dedicated DTE port(s) are connected to the
DS1 line. The dial backup DTE port(s) are connected to an external dial backup device,
such as an Integrated Services Digital Network (ISDN) terminal adapter or a Switched
56 Kbps unit. The dial backup device must have a V.35 interface, accept N x 56 or
N x 64 Kbps (N=1 to 24) data rates, supply a clock source, support DTR dialing, and
provide DSR in response to an incoming call.

In a T-1 environment, when the DS1 line fails (based on user-definable criteria), the
ISX 5312/5314 automatically routes data from its dedicated DTE port(s) to the external
device connected to the backup port(s). The external device restores communication by
transmitting the data over the dial backup line. (See Figure 1-10.) When the DS1 line is
restored (based on user-definable criteria), the dial backup connection is terminated, and
communication is returned to the DS1 line. Dial backup operation can also be initiated
and terminated manually by entering the appropriate commands.

In an FT-1 environment, a central ISX 5312 can provide dial backup to one remote unit,
while a central ISX 5314 can provide dial backup to up to two remote units. When the
Loss of Remote Communications (LRC) alarm is enabled, the central unit sends a
heartbeat message, via a portion of the remote T7 bandwidth, to the remote ISX
5312/5314 unit(s) to communicate the primary line connectivity. For example, in Figure
1-11 the central ISX 5314 maintains a heartbeat signal between the two remote ISX 5312
units. If the heartbeat signal is not present for a user-specified amount of time, the ISX
5314 goes into dial backup mode. When the DS1 line is restored (based on user­definable criteria), the dial backup connection is terminated, and communication is
returned to the DS1 line. Dial backup operation can also be initiated and terminated
manually by entering the appropriate commands.

1-14

ISDN

Introduction

DTE

Router

DTE 1
DTE 2
DTE 4
DTE 3

Router

DTE

128

Kbps

BRI 2000

ISDN Terminal

Adapter

X

ISX 5314

X

SrAdr DTE 2 = 7
SrAdr DTE 4 = 12

BRI 2000

ISDN Terminal

Adapter

BRI 2000

ISDN Terminal Adapter

BRI 2000

ISDN Terminal Adapter

Fai lure

DTE 2

DS1 DS1

DTE 1 DTE 1

ISX 5312 ISX 5312

T- 1

Condit io n

DTE 2

Figure 1-10. T-1 External Dial Backup Application

BRI 2000

Remote

ISX 5312

T7_ID = 7

T7_ID = 12

Remote

ISX 5312

ISDN Terminal

Adapter

SrAdr DTE 2 = 2

SrAdr DTE 2 = 2

BRI 2000

ISDN Terminal

Adapter

T7_ID = 2

Central

BRI

DS1 Lin e
Condit ion

ISDN

DS1

T- 1

DS1

ISDN

BRI

BRI

DS1

BRI

128

Kbps

Router

DTE

DTE 2

X

DTE 1

DTE 1

X

DTE 2

DTE

Router

Figure 1-11. FT-1 External Dial Backup Application

1-15

This forces WIN95 to accept a blank page

Overview

Chapter 2

Installation

The following steps must be completed to install the Excalibur ISX 5312/5314:

1. For the standalone model, place the unit in a suitable location. For the central
site model, install the unit in the Excalibur Card Carrier or in the ISX 5010
chassis.

2. If necessary, set the jumper blocks on the central site unit’s transition board.
These jumper blocks specify whether the DTE ports present an interface similar
to an ISX 5010 access multiplexer or a standalone ISX 5312/5314 (default
setting).

3. If necessary, set the switches on the front of the central site unit’s p.c. card.
These switches specify the NMI port operating mode (Console Port or Network
Management) and chassis type (ISX 5010 or Excalibur Card Carrier). The
default settings specify that the central site model operates in Network
Management mode and is housed in an Excalibur Card Carrier.

4. Connect the unit to the DTEs, the T-1 line(s), and accessory equipment.

5. Connect the power supply to the standalone ISX 5312/5314 and the AC power
outlet.

This chapter explains how to perform each of these procedures. It also contains pin and
signal assignments for each of the ISX 5312/5314’s connectors and descriptions of the
cables used with each connector.

Note: The “Unit Placement” and “AC Power Connection” sections pertain to the
standalone model only. For instructions about installing and applying power to the
central site model, refer to the Excalibur Card Carrier Installation and Operation
Manual or the ISX 5010 Installation and Operation Manual.

2-1

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Unit Placement

The first step in installing the standalone Excalibur ISX 5312/5314 is to place it in
a suitable location. The ISX 5312/5314 can be placed on any stable, flat surface or it can
be mounted in a standard 19-inch (48 cm) equipment rack using the optional Rack
Mount Kit (Part No. 900-1213A-2). An optional Wall Mount Kit (Part No. 900-1219A-

2) is also available with the unit. Installation instructions are provided with both of these
kits.

Whether placed on a flat surface or in a rack, the installed ISX 5312/5314 must meet the
following requirements:

• The physical location must permit cable connections at the rear panel.

• The front panel must be accessible and visible.

• The air intake and exhaust must not be obstructed.

• The ISX 5312/5314 must be physically stable and protected from corrosive spray
or atmosphere.

Setting DTE Port Interface (Central Site Model Only)

The central site model transition board has four jumper blocks that specify whether each
DTE port provides an interface similar to a standalone ISX 5314 or an ISX 5010 access
multiplexer. The default setting is ISX 5314. If you want a DTE port to present an
interface similar to an ISX 5010, you must change its jumper position. This setting
enables you to connect to the DTE interface using the same type of cable used to connect
to an ISX 5010 DTE interface.

To set the jumpers, you must remove the transition board from the chassis. The jumpers
are located next to the DTE ports, as shown in Figure 2-1. To change the interface to
ISX 5010, remove the jumper and turn it so the red end points to 5010.

2-2

Installation

5010

5314
5010

5314

DTE 1

DTE 2

DTE 3

5010

5314
5010

5314

DTE 4

Figure 2-1. Jumper Locations - Central Site Model ISX 5314

2-3

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Setting Switches (Central Site Model Only)

The front edge of the central site model p.c. card (see Figure 2-2) has a switchbank
containing four switches. Switches 1 and 2 specify the NMI port operating mode and the
chassis type as follows:

• Switch 1 On (Down) - The NMI port operates in Console Port mode. Use this
setting if you want to use Console protocol to configure and control the ISX 5314
from a connected ASCII terminal. See “Using Console Port Interface” in Chapter
3 for instructions.

This setting applies only if switch 2 is set On (ISX 5010 chassis mode). If switch
2 is set Off, this setting is ignored, and the NMI port mode is determined by the
Protocol parameter. (See the “Network Management System” section in Chapter 4
for more information.)

• Switch 1 Off (Up) - The NMI port operates in Network Management mode. Use
this setting if you want to use PPP, SLIP, or T7 protocol to configure and control
the ISX 5314 from an SNMP manager, CMS 400, or Telnet. (To select the
protocol, set the Protocol parameter as described in Chapter 4 in the “Network
Management System” section.) (Default)

• Switch 2 On (Down) - Select this setting if the unit is housed in an ISX 5010
chassis.

• Switch 2 Off (Up) - Select this setting if the unit is housed in an Excalibur Card
Carrier. (Default)

Switches 3 and 4 on the switchbank are not used.

Switchbank

ON

1

2

3

4

Front

of

Card

2-4

Figure 2-2. Switchbank Location

Cable Connections

You can now connect the ISX 5312/5314 to the DTEs, T-1 line, and accessory
equipment. On the standalone model, all interface connectors are located on the rear
panel, as shown in Figures 2-3 and 2-4. On the central site model, the connectors are
located on the transition board, as shown in Figure 2-5.

POWER

NMI 10B-T Port 1 Port 2

DS1B
DS1A

Installation

Figure 2-3. Standalone Excalibur ISX 5312 Rear Panel

POWER

NMI 10B-T

Port 3
Port 1

Port 4
Port 2

Figure 2-4. Standalone Excalibur ISX 5314 Rear Panel

DS1B
DS1A

2-5

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

ISX 5314

Port 1

Port 3

Port 2

Port 4

RELAY

1
0
B
T

DMM

N
M

I

D
S
1
B

D
S
1
A

Figure 2-5. Central Site Excalibur ISX 5314 Transition Board

2-6

Connecting to the DTEs

The Excalibur ISX 5312 provides two 26-pin micro connectors labeled Port 1 and
Port 2 for connecting to the DTEs. The Excalibur ISX 5314 provides four connectors
labeled Port 1, Port 2, Port 3, and Port 4.

Note: The following information about cables and connector pin assignments does not

apply for central site units that have the DTE ports configured to present an interface
similar to an ISX 5010. (See “Setting the DTE Port Interface Type”earlier in this
chapter.) If the DTE ports are configured to present an ISX 5010 interface, refer to the
ISX 5010 Installation and Operation Manual for information about cables and connector
pin assignments.

Use adapter cable Part No. 5956-879R (26-pin micro male to 34-pin female) to make this
connection. (You can order this cable from Milgo.) To connect to the DTE, plug the
male end of the cable into the ISX 5312/5314 and plug the female end into your standard
V.35 cable. Table 2-1 lists the pin and signal assignments for this connector. The cable
diagram is provided in Appendix B.

Installation

Table 2-1. V.35 DTE Connector, Pin/Signal Assignments

Pin

CCITT V.35

Symbol Mnemonic

Input/

Output Function

B 102 — — Signal ground.

C 105 RTS Input Request-to-Send.

D 106 CTS Output Clear-to-Send.

E 107 DSR Output Data Set Ready.

F 109 RLSD

Output Received Line Signal Detector.

(DCD)

H 108 DTR Input Data Terminal Ready.

P 103 TXD (A) Input Transmit Data.

S 103 TXD (B) Input Transmit Data.

R 104 RXD (A) Output Receive Data.

T 104 RXD (B) Output Receive Data.

U 113 ExTxC (A) Input External Transmit Clock.

2-7

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Table 2-1. V.35 DTE Connector, Pin/Signal Assignments (Continued)

Pin

CCITT V.35

Symbol Mnemonic

Input/

Output Function

W 113 ExTxC (B) Input External Transmit Clock.

V 115 RxC (A) Output Receiver Signal Element Timing.

X 115 RxC (B) Output Receiver Signal Element Timing.

Y 114 TxC (A) Output Transmitter Signal Element Timing.

AA 114 TxC (B) Output Transmitter Signal Element Timing.

L 141 LL Input Local Loopback. Non-functional for this unit.

Reserved for future use.

N 140 RL Input Remote Loopback. Non-functional for this unit.

Reserved for future use.

NN 142 TM Output Test Mode. Non-functional for this unit.

Reserved for future use.

J 125 RI Output Ring Indicator.

Connecting to the T-1 Line or to External Equipment

For units equipped with two T-1 interfaces, the Excalibur ISX 5312/5314 provides two
8-pin RJ48C female jacks labeled DS1A and DS1B for connecting to the T-1 line. The
jack labeled DS1A is provided for units equipped with a single T-1 interface. Use Cable
Part No. 5956-840R, ISX 5312/5314 line to RJ48C connector, to make this connection.
This cable is provided for each T-1 interface on the unit.

The following cables are available from Milgo for connecting the ISX 5312/5314 to
external equipment:

• Cable Part No. 5956-877C - ISX 5312/5314 line RJ48C to DB-15 Connector
(Regeneration)

• Cable Part No 5956-177F - ISX 5312/5314 line DA-15 to RJ48C Connector

Table 2-2 lists the pin and signal assignments for the line/external equipment connector.

2-8

Installation

Table 2-2. T-1 Line/External Equipment Connector, Pin/Signal Assignments

Pin No. Signal Input/Output

1 Receive Tip Input

2 Receive Ring Input

3 Not Used —

4 Transmit Tip Output

5 Transmit Ring Output

6 Not Used —

7 Chassis Ground —

8 Chassis Ground —

Connecting to External Dial Backup Device

The connector labeled Port 2 on the ISX 5312, and the connectors labeled Port 2 and
Port 4 on the ISX 5314 can be used to connect to an external dial backup device. A

crossover cable is required to make this connection. The correct cable to use depends on
the type of external dial backup device to which you are connecting the ISX 5312/5314.
When connecting to a BRI 2000, use adapter cable part no. 5956-879G (26-pin micro
male to 34-pin female). Plug the male end of the cable into the ISX 5312/5314. Plug the
female end into the crossover cable part no. 5956-744E (26-pin micro male to 34-pin
male) connected to the BRI 2000. (Both cables can be ordered from Milgo.)

Connecting to NMI Port for T7 Network Management

The Excalibur ISX 5312/5314 provides a 10-pin jack labeled NMI for connecting to a
CMS 400 for T7 network management. Use Cable Part No. 5956-158V, which has a 10­pin plug at one end and a 6-pin plug at the other end to make this connection. (This
cable must be ordered from Milgo.) Table 2-3 lists the pin and signal assignments for
the T7 network management system connector.

2-9

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Table 2-3. T7 Network Management System Connector, Pin/Signal Assignments

Pin
No. Signal

Input/

Output Function

1 Not Used — —

2 Signal Ground — Common ground.

3 Secondary Channel

Output Serial data to CMS system.

Receive Data

4 Secondary Channel

——
Data Carrier Detect
(Not Supported)

5 Not Used — —

6 Not Used — —

7 Secondary Channel

——
Request-to-Send
(Not Supported)

8 Secondary Channel

Transmit Data

Input Serial data from CMS

system.

9 Signal Ground — Common ground.

10 Not Used — —

Connecting to NMI Port for PPP/SLIP Network Management

The Excalibur ISX 5312/5314 provides a 10-pin jack labeled NMI for asynchronous
connection to an external router, a terminal server, a Milgo INX-NTS, or a Milgo
CMS 802X. The correct cable to use depends on the type of asynchronous device to
which you are connecting the ISX 5312/5314. When connecting to an INX-NTS, use
Cable Part No. 5956-175V to make this connection. (This cable can be ordered from
Milgo.) If a patch panel is used, the units can generally be directly connected without
using a crossover cable.

In all other instances, a crossover cable is required when directly connecting the units.
When connecting to a CMS 802X, use the cable supplied with the CMS 802X. Since the
ISX 5312/5314 and the CMS 802X are both DCEs, this cable includes the required
crossover. Table 2-4 lists the pin and signal assignments for the PPP/SLIP connector.

2-10

Table 2-4. PPP/SLIP Connector, Pin/Signal Assignments

Installation

Pin
No. Signal

Input/

Output Function

1 Not Used — —

2 Signal Ground — Common ground.

3 SNMP Receive Data Output EIA-232-E level data.

4 Reserved — Reserved.

5 Not Used — —

6 Not Used — —

7 Reserved — Reserved.

8 SNMP Transmit

Input EIA-232-E level data.

Data

9 Signal Ground — Common ground.

10 Not Used — —

To establish a serial SNMP connection between the ISX 5312/5314 and an INX-NTS,
follow these steps:

1. From the ISX 5312/5314’s front panel, press the buttons beneath

Local/Confg/DSU/NMS/Prtcl

. Then press the button beneath

PPP

. Press the

Escape button to return to the NMS Configuration submenu.

Speed

2. Press the button beneath

. Then press the button beneath the desired port

speed. Press the Escape button to return to the NMS Configuration submenu.

3. Press the button beneath

NTS

. Then press the button beneath

INX

.

4. Configure the INX-NTS’s PPP port as follows:

Note: The ISX 5312/5314 supports the INX-NTS operating in Active mode only.

2-11

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

INX-NTS Parameter Value

Open Type ACTIVE

Restart Timer 4

MaxConfig Reqs 12

MaxConfig Nacks 12

MaxTerm Reqs 12

LCP Async Map FFFFFFFF

LCP Addr Compress OFF

LCP Protocol Compress OFF

IPCP IP Address Local - 0.0.0.0

Remote - same address as the
ISX 5312/5314

IP Subnet Mask 255.255.255.255

To establish a serial SNMP connection between the ISX 5312/5314 and CMS 802X,
follow these steps:

1. From the ISX 5312/5314’s front panel, press the buttons beneath

Local/Confg/DSU/NMS/Prtcl

. Then press the button beneath

PPP

. Press the

Escape button to return to the NMS Configuration submenu.

Speed

2. Press the button beneath

. Then press the button beneath the desired port

speed. Press the Escape button to return to the NMS Configuration submenu.

3. Press the button beneath

NTS

. Then press the button beneath

Std

.

4. Configure the CMS 802X as follows:

CMS 802X Parameter Value

Data Bits 8

Stop Bits 1

Parity None

2-12

Baud Rate Set to match the port speed you

selected in Step 2 for the
ISX 5312/5314.

IP Addresses Supply two: one for the CMS 802X

and one for the ISX 5312/5314.

Subnet Mask 255.255.255.0

Connecting to NMI Port for Front Panel Controller or Console Port
Applications

The NMI connector can be used to connect to any serial port on a PC for use with the
Front Panel Controller Application for Windows or the software download package. It
can also be used to connect to a VT100-compatible ASCII terminal for use with the
Console Port Interface feature. You can order the following cables from Milgo to make
this connection:

Installation

• Cable Part No. 5956-182B - 10-pin plug to 9-pin female connector

• Cable Part No. 5956-173T - 10-pin plug to 25-pin female connector

Plug the 10-pin plug into the connector labeled NMI on the ISX 5312/5314’s rear panel
and plug the other end into a serial port on the PC or terminal. Cable diagrams are
provided in Appendix B.

When connecting to a terminal, configure the terminal’s parameters as follows:

Data bits = 8

Parity = None

Stop bits = 1

Connecting to the Ethernet 10BaseT Connector

The Excalibur ISX 5312/5314 provides an 8-pin connector labeled 10B-T for connecting
to the LAN. Use a standard Ethernet 10BaseT cable to make this connection. Table 2-5
lists the pin and signal assignments for this connector.

2-13

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Table 2-5. Ethernet 10BaseT Connector, Pin/Signal Assignments

Pin

No. Symbol Function

1 TD+ Transmit Data Positive

2 TD- Transmit Data Negative

3 RD+ Receive Data Positive

4––

5––

6 RD- Receive Data Negative

7––

8––

Connecting to a Dial Modem

The NMI connector can be used to connect to a dial modem. Use Cable Part
No. 5956-182C, which has a 10-pin plug at one end and a 25-pin male connector at the
other end, to make this connection. (This cable can be ordered from Milgo.) The cable
diagram is provided in Appendix B.

Connecting to an External Alarm Device (Central Site Model Only)

The central site Excalibur ISX 5314 has a connector, labeled Relay, that enables you to
connect to an external alarm indication device. Two relay contacts are provided. The
relay contacts are activated through commands received from the CMS 400 network
management system. You can test the relay contacts through the front panel, console
port, or Front Panel Controller application. Alarms in the ISX 5314 do not activate these
relay contacts.

The cable to use depends on the type of alarm indication device you are connecting.
Table 2-6 lists the pin and signal assignments for this connector.

Caution: The alarm relay contacts are rated 2 Amps @ 30 Volts DC, 1 Amp @ 60
Volts DC, or 2 Amps @ 30 Volts AC. Connecting loads exceeding these ratings will
void the product's safety approvals, and may present a risk of fire or electric shock.

2-14

Table 2-6. Relay Connector, Pin/Signal Assignments

Pin Signal

1 Relay 1 Normally Closed (NC)

2 Relay 1 Common

3 Relay 1 Normally Open

4 Relay 2 Normally Closed (NC)

5 Relay 2 Common

6 Relay 2 Normally Open

DMM Connector (Central Site Model Only)

Installation

The central site Excalibur ISX 5314 has a connector, labeled DMM, that enables you to
daisy-chain the CMS system diagnostic channel. Use Cable Part No. 5956-158V to
connect the DMM connector on the first unit to the NMI connector on the next unit.
Continue to daisy-chain units in the same manner: DMM to NMI.

Note: Daisy-chaining works only if all units in the daisy-chain are configured to use T7
network management protocol.

AC Power Connection

The standalone Excalibur ISX 5312/5314 draws power from an external power supply.
(Appendix A lists the input voltage specifications for the power supply shipped with
your unit.) To make the power supply connection, plug one end of the power supply
cable into the ISX 5312/5314's power receptacle labeled POWER and plug the other end
into the AC outlet.

Caution: For use with Power Supply Part No. 25C168-01. Pour utilizer avec
alimentation.

2-15

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Verifying the Ethernet Link Connection

You can verify the Ethernet link connection by checking the status of the green LED
indicator located on the rear panel’s 10B-T connector, as shown in Figure 2-6. After
power-up initialization, the Ethernet controller continuously performs a Link Test. The
LED indicator is On when the current test indicates the link is operational. It is Off
when the current test indicates the link is failing.

The yellow LED indicator on the 10B-T connector is On for a short period each time the
Ethernet controller transmits a packet.

POWER

NMI 10B-T

GGreen LED

YYellow LED

2-16

Figure 2-7. Ethernet 10BaseT Connector LED Indicators

Introduction

This chapter is designed to familiarize you with the standalone Excalibur ISX 5312/5314
front panel. It describes the functions of all buttons, the screen, and LED indicators. It
shows what you will see when you first plug in the ISX 5312/5314 and explains how to
move through the menus to enter commands. It contains instructions for entering T7 and
IP addresses, establishing password protection, and establishing the user identifier and
password required for access from Telnet.

Front Panel Components

The Excalibur ISX 5312/5314 front panel contains eight pushbuttons, two LED
indicators, and a 48-character LCD screen. Figure 3-1 illustrates the front panel and
describes the functions of its various components.

Chapter 3

Using the Front Panel

The front panel provides an audible beeper that you can enable or disable as desired.
The beeper can be configured to sound every time a button is pushed and/or an alarm is
reported. It can also be disabled completely. (For instructions, see "Beeper" in
Chapter 4.)

Lights when a test or loop is in
progress.

Test

1

1-4 select options displayed on the
bottom line of the screen.

Returns the display to the
previous menu.

2 3 4

Moves the cursor to the left.
Scrolls the display to show
previous menu options (when a
flashing appears on the screen).

Returns the display to
the top level menu.

Escape

cali ur I 3

Top

Moves the cursor to the right.
Scrolls the display to show
additional menu options (when a
flashing appears on the screen).

User-enabled alarm
conditions cause
this indicator to light.

User

Figure 3-1. Excalibur ISX 5312/5314 Front Panel

3-1

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

What You Will See First

When you plug in the ISX 5312/5314, the screen displays the Top Level menu. (See
Figure 3-2.) A reverse-video

T

(for top) appears in the upper left corner of the screen.

T

L o c a l A d d r R T N

E x c a l I S X 5 3 1 4 D T 1 S A

Figure 3-2. Top Level Menu

Moving Through the Menus

The Top Level menu is the starting point for entering all commands. You can access this
menu from any other menu by pressing the Top button.

As with all Excalibur ISX 5312/5314 menus, the Top Level menu consists of two lines.
The top line displays the model (

S

denotes it is equipped with a single T-1 interface; SA denotes standalone, CS denotes
central site). The bottom line displays the possible options you can select. The Top
Level menu allows you to select from the following options:

Local

•

- places the ISX 5312/5314 into Local Mode. This is the normal mode of

operation. An

L

(for local) is displayed in the upper left corner of all screens when

in Local Mode.

D

denotes the unit is equipped with dual T-1 interfaces,

3-2

Addr

•

- allows you to define the local T7 address required for T7 network
management and the IP (Internet Protocol) addresses required for SNMP network
management. It also allows you to direct traps to one SNMP manager and view
the port numbers used by this manager’s UDP (User Datagram Protocol) service
source port and destination port.

RTN

•

- allows you to clear alarms and any tests in progress, and allows you to turn
off the Test LED if it is lit.

To select an option, simply press the button (1 - 4) beneath it. The screen then displays a
submenu with a new set of options. Whenever the screen cannot fit all options on a
single display, it displays a flashing > arrow in the lower right corner. To display
additional options, press the > button. A flashing < arrow then appears in the lower left
corner of the screen. This indicates that you can display the previous options again by
pressing the < button.

Each time you select an option, a new submenu appears, until the lowest-level menu is
reached, and the command is executed. To return from any menu to the previous menu,
press the Escape button.

Alarm Display

When an alarm condition occurs, it is simultaneously reported to the front panel and
displayed on the second line of the screen, overwriting anything that was on the screen
except in the Configuration Mode menus. (See Figure 3-3.) If the front panel beeper is
enabled for alarms, it beeps a long beep to notify you that an alarm has been reported. If
a new alarm occurs while an old alarm is displayed, the old alarm message is overwritten
with the new one. Press any button to restore the display back to the current menu
selection. You can enable or disable each alarm as desired. (Refer to "Alarms" in
Chapter 4 for a description of each alarm and instructions on how to enable or disable.)

Note: In the Configuration Mode menus, alarms are not displayed on the screen. If the
front panel beeper is enabled for alarms, it beeps a long beep to notify you that an alarm
has been reported.

T

E x c a l I S X 5 3 1 4 D T 1 S A

Using the Front Panel

Figure 3-3. Alarm Display

Entering the T7 Address

For the T7 management feature to operate, each Excalibur ISX 5312/5314 in the network
must be assigned a unique T7 address. The address can be any 3-digit number between
001 and 255.

Note: The default address is 002.

To enter this address, follow these steps, starting from the Top Level menu:

Note: In the illustrations that follow, the shading indicates which button to press.

1. Press the button beneath

D S 1 A R e d

Addr

.

T

L o c a l A d d r R T N

1

E x c a l I S X 5 3 1 4 D T 1 S A

2

3

4

Escape Top

<

>

3-3

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

T7

2. Press the button beneath

.

L

I S X 5 3 1 4 A d d r e s s

Escape

Top

T 7 I P A d r S N M P

1

3. Press the button beneath

L

I S X 5 3 1 4 T 7 A d d r e s s

23

Local

.

4

<

Escape

>

Top

L o c a l

1

23

4

<

>

4. The screen displays the current address in the top line with a cursor under the

leftmost digit. To increase the digit, press the 1 button; to decrease it, press the
2 button. To copy a character into the next space, press the 3 button. When you
change a digit, a reverse-video

C

appears in the lower right corner of the screen.

L

L o c a l A d d r = 0 0 2

Escape Top

I n c D e c C p y A c c

1

234

<

>

5. When the leftmost digit is set, press the > button to move the cursor to the center

digit. Then repeat Step 3 to set the digit. Continue in this manner until the
desired address is displayed.

L

L o c a l A d d r = 1 0 2

I n c D e c C p y A c c

1

234

Escape Top

C

<

>

3-4

Using the Front Panel

6. Press the 4 button to enter the address into memory. The reverse-video

disappears when the address is accepted.

L

I n c D e c C p y A c c

1

L o c a l A d d r = 1 1 2

23

Entering IP Addresses

For the SNMP management feature to operate, the ISX 5312/5314 must be assigned an
IP address, a Gateway address, and a Subnet Mask. The ISX 5312/5314 also allows you
to direct traps to one SNMP manager and view the port numbers used by this manager’s
UDP service source port and destination port.

Note: The IP address and Gateway address parameters should not be changed from a
remote unit. Changing these parameters results in terminating the remote session.

C

Escape Top

C

4

<

>

Entering the Unit’s Local IP Address

To enter the IP address, follow these steps, starting from the Top Level menu:

1. Press the button beneath

T

L o c a l A d d r R T N

1

2. Press the button beneath

L

T 7 I P A d r S N M P

1

E x c a l I S X 5 3 1 4 D T 1 S A

2

I S X 5 3 1 4 A d d r e s s

23

Addr

3

IPAdr

.

Escape Top

4

<

>

.

Escape

4

<

Top

>

3-5

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Addr

3. Press the button beneath

.

L

I S X 5 3 1 4 I P A d d r e s s

Escape

Top

A d d r G a t e W M a s k

1

23

4

<

>

4. The screen displays the current address in the top line with a cursor under the

leftmost digit. To increase the digit, press the 1 button; to decrease it, press the
2 button. To copy a character into the next space, press the 3 button. When you
change a digit, a reverse-video

A d r =  0 4 . 0 0 3 . 0 0 2 . 0 0 1

L

I n c D e c C p y A c c

1

2

C

appears in the lower right corner of the screen.

Escape Top

34

<

>

5. When the leftmost digit is set, press the > button to move the cursor to the next

digit. Then repeat Step 3 to set the digit. Continue in this manner until the
desired address is displayed.

A d r =  0 4 . 0 0 3 . 0 0 2 . 0 0 1

L

I n c D e c C p y A c c

1

2

34

Escape Top

C

<

6. Press the 4 button to enter the address into memory. The reverse-video

disappears when the address is accepted.

A d r = 1 3 0 . 0 4 5 . 0 4 4 . 1 0 !

L

I n c D e c C p y A c c

1

2

34

Escape Top

C

<

>

C

>

3-6

Entering the Gateway Address

The ISX 5312/5314 supports a single Gateway for packet routing. If the packet
destination is on the same subnet as the ISX 5312/5314, the packets are sent directly to
the destination. If it is not on the same subnet, the packets have to be routed to the
destination through the Gateway. To enable this feature, you must enter a Gateway
address and a Subnet Mask. The Subnet Mask determines whether the destination is on
the same subnet as the ISX 5312/5314. If it is on a different subnet, the packets are
routed through the Gateway. The ISX 5312/5314’s default Gateway address is

000.000.000.000

. If left at the default setting, packets with destinations in other subnets

are discarded. Any valid IP address can be used for the Gateway address.

To enter the Gateway address, starting from the Top Level menu, press the buttons
beneath

Addr/IPAdr/GateW

described in the “Entering the Unit’s Local IP Address” section, Steps 4 - 6.

Entering the Subnet Mask

Using the Front Panel

. You can then enter the Gateway address in the same manner

The Subnet Mask is a bit mask that indicates the bits of an IP address to be interpreted as
the subnet address and the bits to be interpreted as the device within the subnet. The
ISX 5312/5314’s default Subnet Mask is
and 0 defines the device within the subnet.

Note: When connected to an INX-NTS, the Subnet Mask should be set to

255.255.255.000.

To change the Subnet Mask, starting from the Top Level menu, press the buttons
beneath
described in the “Entering the Unit’s Local IP Address” section, Steps 4 - 6.

Enabling Traps

The ISX 5312/5314 allows you to direct traps to one SNMP manager. To enable this
feature, you must enter the IP address of the manager you want to receive traps. To do
so, starting from the Top Level menu, press the buttons beneath
You can then enter the IP address in the same manner described in the “Entering the
Unit’s Local IP Address” section, Steps 4 - 6. .

To view the port numbers used by this manager’s UDP (User Datagram Protocol) service
source port and destination port, starting from the SNMP Address submenu, press the
button beneath
or the button beneath

Addr/IPAdr/Mask

Port#

. Then press the button beneath

Dest

255.255.255.000

, where 255 defines the subnet

. You can then enter the Subnet Mask in the same manner

Addr/SNMP/MgAdr

Src

to view the source port number

to view the destination port number

.

The ISX 5312/5314 can have traps directed to multiple managers. The front panel
allows you to set only one manager’s IP address. Additional addresses can be set via the
SNMP interface.

3-7

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Establishing Password Protection

The Excalibur ISX 5312/5314 allows you to establish password protection over one or
both of the following front panel functions: configuration and diagnostic testing. When
a function is locked, the operator must enter the correct password to unlock it. This
feature prevents unauthorized operators from changing the ISX 5312/5314's
configuration and from executing test functions.

Note: It is recommended that you lock the configuration and diagnostic testing
functions to prevent unauthorized access.

Locking and Unlocking Front Panel Functions

To lock or unlock all front panel configuration or diagnostic testing functions, follow
these steps, starting from the Top Level menu:

Local

1. Press the button beneath

.

T

L o c a l A d d r R T N

1

2. Press the button beneath

L

S t a t s C o n f g D i a g S e c u r

1

E x c a l I S X 5 3 1 4 D T 1 S A

2

I S X 5 3 1 4 L o c a l M o d e

23

3

Secur

4

.

4

Escape Top

<

Escape Top

<

3. Press the button beneath the function you want to lock or unlock.

L

I S X 5 3 1 4 S e c u r i t y

C o n f g T e s t s C o d e T e l n t

1

23

4

Escape Top

<

>

>

>

3-8

4. Press the button beneath the desired option.

Using the Front Panel

L

D S U C o n f g L o c k = O f f

Escape Top

O f f O n

1

234

<

5. The screen prompts you to enter the security code. When the Excalibur

ISX 5312/5314 is shipped from the factory, the predefined security code is CSU.
The cursor is located under the leftmost digit of the 3-digit field. To increase the
digit, press the 1 button; to decrease it, press the 2 button. To copy a character
into the next space, press the 3 button. Press the < and > buttons to move from
space to space. When you change a digit, a reverse-video

C

appears in the lower

right corner of the screen.

Cpy

is a time-saving feature. For example, the quickest way to enter the
predefined code is: 1) Increase the first digit to
digit. 3) Increase the

C

to S. 4) Copy S to the third digit. 5) Increase the S to U.

C

. 2) Copy C to the second

Note: The predefined security code must be entered in uppercase letters.

>

L

D S U E n t e r C o d e : * * *

Escape Top

I n c D e c C p y A c c

1

234

<

>

6. When the correct code is displayed, press the 4 button. If an incorrect code is

entered, the unit beeps a long beep and the screen prompts you to re-enter the
code. When the correct code has been accepted, the top line of the screen
displays the new parameter setting. The front panel function you selected is now
locked.

L

D S U E n t e r C o d e : C S 7

I n c D e c C p y A c c

1

L

I n c D e c C p y A c c

23

4

D S U C o n f g L o c k = O n

Escape Top

C

<

>

3-9

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

7. Press the Escape button to return to the ISX 5312/5314 Security submenu.

Changing the Password

To change the password, follow these steps, starting from the ISX 5312/5314 Security
submenu:

Note: It is recommended that you change the password before locking front panel
functions.

1. Press the button beneath

L

I S X 5 3 1 4 S e c u r i t y

C o n f g T e s t s C o d e T e l n t

1

23

Code

.

Escape Top

4

<

>

2. The screen displays a 3-digit alphanumeric field, denoted by asterisks, with the

cursor located under the leftmost digit. To increase the digit, press the 1 button;
to decrease it, press the 2 button. To copy a character into the next space, press
the 3 button. Press the < and > buttons to move from space to space. When you
change a digit, a reverse-video

L

I n c D e c C p y A c c

1

D S U N e w C o d e : * * *

234

C

appears in the lower right corner of the screen.

Escape Top

<

>

3. When the desired new code is displayed, press the 4 button. The screen then

prompts you to enter the existing security code.

L

I n c D e c C p y A c c

1

L

I n c D e c C p y A c c

3-10

D S U N e w C o d e : U S )

234

D S U E n t e r C o d e = * * *

Escape Top

C

<

>

Using the Front Panel

4. When the Excalibur ISX 5312/5314 is shipped from the factory, the predefined

security code is CSU. Enter the predefined code in the same manner as
described in Step 2. When the correct code is displayed, press the 4 button. If
an incorrect code is entered, the bottom line of the screen displays the message:

Invalid code entered

. Press the Escape button and re-enter the code. When the

existing code has been accepted, the screen displays the new code. If you forget
the code, contact your local Milgo Customer Support Office.

Note: The predefined security code must be entered in uppercase letters.

L

I n c D e c C p y A c c

1

D S U E n t e r C o d e : C S

234

D S U N e w C o d e = U S A

L

I n c D e c C p y A c c

7

5. Press the Escape button to return to the ISX 5312/5314 Security submenu.

Establishing the Telnet Logon Sequence

For security purposes, access from Telnet is protected by a user-configurable logon
sequence consisting of a user identifier and a password. A Telnet session is established
only if the logon entries match the user identifier and password stored in the non-volatile
database of the ISX 5312/5314. The ISX 5312/5314 supports only one user identifier
and one password. By entering commands from the ISX 5312/5314’s front panel, you
can enter the user identifier and password required for access from Telnet. You can also
specify the amount of time a Telnet session can remain inactive before it is automatically
terminated by the ISX 5312/5314. The following sections explain how to perform each
of these procedures.

Escape Top

C

<

>

3-11

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Entering the Telnet Security Submenu

Before you can enter the user identifier and password, you must first enter the Telnet
Security submenu. To do so, follow these steps, starting from the Top Level menu:

Local

1. Press the button beneath

.

T

E x c a l I S X 5 3 1 4 D T 1 S A

L o c a l A d d r R T N

1

2. Press the button beneath

L

S t a t s C o n f g D i a g S e c u r

1

3. Press the button beneath

L

I S X 5 3 1 4 S e c u r i t y

C o n f g T e s t s C o d e T e l n t

1

2

I S X 5 3 1 4 L o c a l M o d e

23

23

3

Secur

Telnt

.

.

4

4

4

Escape Top

<

>

Escape Top

<

>

Escape Top

<

>

3-12

Using the Front Panel

4. The screen prompts you to enter the security code. When the ISX 5312/5314 is

shipped from the factory, the predefined security code is CSU. Enter the
predefined code unless you changed it under the Code parameter. If you
changed it, enter the current code. The cursor is located under the leftmost digit
of the 3-digit field. To increase the digit, press the 1 button; to decrease it, press
the 2 button. To copy a character into the next space, press the 3 button. Press
the < and > buttons to move from space to space. When you change a digit, a
reverse-video

C

appears in the lower right corner of the screen.

L

I n c D e c C p y A c c

1

D S U E n t e r C o d e : * * *

234

Escape Top

<

>

5. When the correct code is displayed, press the 4 button. If an incorrect code is

entered, the bottom line of the screen displays the message:

entered

. Press the Escape button and re-enter the code. When the code has

Invalid code

been accepted, the screen displays the Telnet Security submenu.

L

I n c D e c C p y A c c

1

D S U E n t e r C o d e : C S

2

T e l n e t S e c u r i t y

L

U s r I d P a s s w S e s T O

3

7

4

Escape Top

C

<

>

Entering the User Identifier

When the Excalibur ISX 5312/5314 is shipped from the factory, the predefined Telnet
user identifier is RACAL-DATACOM. The user identifier can be any alphanumeric
name up to 16 characters long. To change the predefined user identifier, follow these
steps, starting from the Telnet Security submenu:

3-13

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

1. Press the button beneath UsrId.

T e l n e t S e c u r i t y

L

U s r I d P a s s w S e s T O

1

2

3

Escape

4

<

Top

>

2. The screen displays the current user identifier on the top line, with a cursor

located beneath the leftmost space. Press the 1 or 2 button to scroll through the
different letters, numbers, and symbols that can be entered in the space. The
flashing > arrow in the right corner of the screen indicates that there are more
available spaces to the right. When you change a digit, a reverse-video

C

appears in the lower right corner of the screen.

L

U s e r I d : 4 A C A L - D A T A C >

I n c D e c A c c n e x t

1

2

34

Escape Top

<

>

3. When the desired character is displayed, press the > button to move the cursor to

the next space.

3-14

U s e r I D : , A C A L - D A T A C >

L

I n c D e c A c c n e x t

1

2

34

Escape Top

C

<

>

If you want to insert a character between two entered characters or delete an entered
character, follow Step 4. If you want to copy an entered character, clear an entered
character, or clear all entered characters, follow Step 5. If you do not want to use any of
these options, skip to Step 6.

Using the Front Panel

4. Press the 4 button. You can now insert a character by pressing the 1 button,
delete a character by pressing the 2 button, or delete a character and move the
cursor one space to the left by pressing the 3 button. When finished, press the
4 button two times.

L

U s e r I d : D ) C A L - D A T A C >

I n c D e c A c c n e x t

1

L

2

U s e r I d : D ) C A L - D A T A C >

34

I n s D e l B c k S p n e x t

Escape Top

C

<

C

>

5. Press the 4 button two times. You can now copy a character into the next space
by pressing the 1 button, clear a character by pressing the 2 button, or clear all
characters by pressing the 3 button. When finished, press the 4 button.

L

U s e r I d : D ) C A L - D A T A C >

I n c D e c A c c n e x t

1

2

34

Escape Top

C

<

>

U s e r I d : D ) C A L - D A T A C >

L

C p y C l e a r C l A l l n e x t

C

6. Continue in this manner until you have entered the desired user identifier. Then
press the 3 button to enter it into memory.

L

U s e r I D : D A T A G R O U

- >

2

I n c D e c A c c n e x t

1

2

34

Escape Top

C

<

>

3-15

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Entering the User Password

When the Excalibur ISX 5312/5314 is shipped from the factory, the predefined Telnet
user password is SERVICE. The user password can be any alphanumeric name up to
16 characters long. To change the predefined user password, enter the Telnet Securing
submenu and press the button beneath

Passw

. You can then define a new password in

the same manner described in Steps 2 - 6 in the previous section.

Session Timeout

The Session Timeout parameter specifies the amount of time, from 0 to 99 minutes, a
Telnet session can remain inactive before it is automatically terminated by the
ISX 5312/5314. The factory-default setting is five minutes. This option is disabled
when set to 00, meaning the ISX 5312/5314 will never time-out a Telnet session.

To set the Session Timeout parameter, follow these steps, starting from the Telnet
Security submenu:

1. Press the button beneath

T e l n e t S e c u r i t y

L

U s r I d P a s s w S e s T O

1

2

SesTO

3

.

Escape

4

<

Top

>

2. The screen displays a 2-digit field on the top line with a cursor under the

leftmost digit. To increase the digit, press the 1 button; to decrease it, press the
2 button. Press the < and > buttons to move from space to space. When you
change a digit, a reverse-video

L

S e s s i o n T i m e O u t =  5 m

I n c D e c C p y A c c

1

2

C

appears in the lower right corner of the screen.

34

Escape Top

<

>

3-16

Using the Front Panel

3. When the desired timeout period is displayed, press the 4 button.

L

S e s s i o n T i m e O u t = 1  m

I n c D e c C p y A c c

1

2

Using Console Port Interface

The Console Port Interface feature provides direct attachment or dial-in access to a
VT100-compatible ASCII terminal. (See “Connecting to NMI Port for Front Panel
Controller or Console Port Applications” in Chapter 2 for cable connection instructions.)
The console port interface operates like a Telnet session in the respect that an ASCII
representation of the front panel is sent to the terminal screen.

For security purposes, access to the console port interface is protected by the same user
identifier and password required to access Telnet. A console session is established only
if the logon entries match the user identifier and password stored in the non-volatile
database of the ISX 5312/5314.

Note: The NMI port configuration parameters (protocol and speed) should not be
changed using this application. If you change these parameters, communication with the
unit is lost.

34

Escape Top

C

<

>

Enabling Console Port Interface

To enable the console port interface, do one of the following:

• If you have a standalone model ISX 5312/5314 or a central site model ISX 5314
housed in an Excalibur Card Carrier, set the Protocol parameter to Console. See
“Network Management System” in Chapter 4 for instructions.

• If you have a central site model ISX 5314 housed in an ISX 5010 chassis, set the
NMI port mode to Console Port using the switches on the front of the central site
model p.c. card. See “Setting Switches” in Chapter 2 for instructions.

Autobaud

The Autobaud feature allows the ISX 5312/5314 to automatically determine the terminal
baud rate and set the serial port to operate at the same rate. Autobaud appears as an
option for the Speed parameter (in the NMS Configuration submenu) only when the
Protocol parameter is set to Console.

3-17

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

The Autobaud feature supports 300, 1200, 2400, 4800, 9600 bps, and 14.4, 19.2, 28.8,

38.4, 57.6, 115.2 Kbps baud rates. The connection is established with 8 data bits, no
parity, and 1 stop bit.

Note: The 14.4 and 28.8 Kbps speeds are supported only by the Autobaud feature.

The Autobaud feature is disabled when the Protocol parameter is changed from Console
to another protocol (T7, SLIP, PPP, or Ethernet). The ISX 5312/5314 reverts to the

19.2 Kbps default baud rate.

Logging In

The console port interface is password protected. The default user identifier (RACAL­DATACOM) and password (SERVICE) are predefined through the Telnet Security

submenu. If you change the predefined Telnet user identifier and/or password, the
current Telnet user identifier and password are required for access to the console port
interface.

At start-up, the console port interface process is idle, and you can attempt to access it
from the terminal. No prompt is presented at this stage. To obtain the console prompt,
press

The screen displays

Type the user identifier (default is

The screen displays

Type the password (default is

The screen displays the same screen that is currently displayed on the front panel.

To end the session at any time, type
the login prompt. If the terminal is idle for the amount of time selected under the
Session Timeout parameter in the Telnet Security submenu, the ISX 5312/5314
automatically logs the user off.

Display Screens

The console port interface operates like a Telnet session in the respect that an ASCII
representation of the front panel is sent to the terminal screen. The actual display is
dependent on your terminal and how it is configured. Figure 3-4 shows a typical
example of a terminal display screen.

[ENTER]

.

Login:

Password:

SERVICE

RACAL-DATACOM

[ENTER]

)

Q

. To start a new session, press

.

[ENTER]

)

.

[ENTER]

to restore

3-18

Using the Front Panel

Figure 3-4. Typical Terminal Display Screen

Terminal Key Functions

The terminal key functions are equivalent to the ISX 5312/5314’s front panel buttons.
To select an option, simply type its corresponding number (
display. The screen then displays a submenu with a new set of options. Whenever the
screen cannot fit all options on a single display, it displays a right arrow in the lower
right corner of the screen. To display the additional options, type
appears in the lower left corner of the screen. This indicates you can display the
previous options again by typing

Each time you select an option, a new submenu appears, until the lowest-level menu is
reached and the command is executed. To return from any menu to the previous menu,

E

. Table 3-1 lists the terminal keys used and their functions.

type

1, 2, 3, or 4

L

.

) from the option

R

. A left arrow then

3-19

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Table 3-1. Terminal Key Functions

Key Function

T

(Top)

E

(ESC)

R

(Right

Arrow)

L

(Left

Arrow)

1

2

3, 4

,

,

(Function

Keys)

Q

(Quit)

Returns the display to the Top Level menu.

Returns the display to the previous menu.

Displays additional options when the screen displays a flashing
right arrow in the lower right corner.

On screens displaying a cursor, moves the cursor one space to the
right.

Displays previous options when the screen displays a flashing left
arrow in the lower left corner.

On screens displaying a cursor, moves the cursor one space to the
left.

Selects the corresponding option from the screen display. If there
is a lower-level submenu, the screen displays it.

Terminates the console session and returns the terminal to the
ready mode.

Logging Off

3-20

[ENTER]

Refreshes the current display.

(Refresh)

To end a terminal session at any time, type Q. If the terminal is idle for the amount of
time selected under the Session Timeout parameter in the Telnet Security submenu, the
ISX 5312/5314 automatically logs the user off.

Defining Operating Parameters

Overview

This chapter explains how to configure the Excalibur ISX 5312/5314's operating
parameters to suit your particular network requirements. The beginning of the chapter
contains step-by-step instructions that show you how to define operating parameters
using the front panel buttons and display. The remainder of the chapter describes the
parameters in detail to help you decide which settings are correct for your application.
This chapter also lists the different types of alarms the ISX 5312/5314 can report and
explains how to enable or disable each alarm.

Entering the Configuration Menu

To define the ISX 5312/5314's operating parameters, you must enter the Configuration
menu. To do so, follow these steps, starting from the Top Level menu:

Chapter 4

Local

1. Press the button beneath

T

E x c a l I S X 5 3 1 4 D T 1 S A

L o c a l A d d r R T N

1

2. Press the button beneath

L

S t a t s C o n f g D i a g S e c u r

1

2

I S X 5 3 1 4 L o c a l M o d e

23

.

3

Confg

to enter the Configuration menu.

4

4

Escape Top

<

Escape Top

<

>

>

4-1

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

3. The screen displays the first four parameter submenus. Press the > button to

scroll through the remaining options.

L

I S X 5 3 1 4 C o n f i g M o d e

D S U P o r t s D S 1 a D S 1 b >

1

L

< D S 1 b A l a r m F c t r y U s t r p >

23

I S X 5 3 1 4 C o n f i g M o d e

I S X 5 3 1 4 C o n f i g M o d e

L

< U s t r p R e s e t N e w S w

4

Escape Top

<

The submenus are:

DSU

•

•

- provides the basic ISX 5312/5314 parameters.

Ports

- provides the configuration parameters and specifies the DS0 channel
assignments for the individual ports DTE 1 and DTE 2 (ISX 5312) or DTE 1,
DTE 2, DTE 3, and DTE 4 (ISX 5314). The parameters are identical for each DTE
submenu.

>

DS1a, DS1b

•

- provide the configuration parameters for T-1 lines A and B. The
parameters are identical for both line submenus. If your unit is equipped with one
T-1 line interface, the

DS1b

submenu does not appear on the screen. This menu
also allows you to assign DS0 channels from the line A interface to the line B
interface and vice versa.

Alarm

•

- allows you to enable or disable each alarm and allows you to reset alarms
independently for the ISX 5312/5314 and each T-1 line. For each line alarm, it
also allows you to specify the amount of time that an alarm condition is active
before it is reported by the ISX 5312/5314 and the amount of time that a Red
alarm condition is no longer active before the ISX 5312/5314 reports it cleared.

Fctry

•

(Factory) - allows you to replace the current parameter configuration with

the factory default settings.

Ustrp

•

(User strap) - allows you to view the user parameter configuration. It also
allows you to update the user configuration with the current configuration or
download to the user configuration.

Reset

•

- allows you to initiate a soft unit reboot.

4-2

Defining Operating Parameters

•

NewSw

(New Software) - allows you to download the ISX 5312/5314’s software
from your PC console. Do NOT enter this submenu when using the ISX
Download Program DL5300.exe.

Note: In the Configuration Mode menus, alarms are not displayed on the screen. If the
front panel beeper is enabled for alarms, it beeps a long beep to notify you that an alarm
has been reported.

Defining Individual Parameters

To define parameters individually, follow these steps:

1. Press the button beneath the desired parameter submenu.

L

D S U P o r t s D S 1 a D S 1 b >

1

I S X 5 3 1 4 C o n f i g M o d e

23

Escape Top

4

<

>

2. To display a parameter's current setting and possible options, press the button
beneath it. (In submenus that contain more than four parameters, you may need
to press the > button to scroll to the desired parameter.) The screen then
displays the current setting on the top line and the possible options on the bottom
line.

L

L o c a t T x C l k S y C l k B e e p r >

1

I S X 5 3 1 4 C o n f i g D S U

23

4

Escape Top

<

>

4-3

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

3. To change the current setting, press the button beneath the desired setting. The
top line of the screen then displays the revised setting. The revised setting takes
effect immediately after it is selected, except for screens displaying the word

Acc

on the bottom line.

D S U L o c a t i o n = R e m o t

L

C e n t r R e m o t

1

L

C e n t r R e m o t

234

D S U L o c a t i o n = C e n t r

Escape Top

<

4. Press the Escape button. You can then define another parameter within the
same submenu.

Several parameter screens display the words

Inc, Dec, Cpy

, and

Acc

on the bottom line.

For example:

L

I n c D e c C p y A c c

L o c a l A d d r e s s =  0 2

C

>

4-4

To change this parameter, you must increase or decrease its current value (rather than
select from a list of possible options). When this type of screen is displayed, a cursor
appears beneath the leftmost digit. To increase its value, press the button beneath
decrease the value, press the button beneath
space, press the button beneath

C

video

appears in the lower right corner of the screen. To move the cursor to the next

Cpy

. When you change the value of a digit, a reverse-

Dec

. To copy a character into the next

Inc

digit, press the > button. When the desired value is displayed on the top line, press the
button beneath

Acc

to enter the value into memory. The reverse-video C disappears
when the entry has been accepted. For simplicity, the rest of the screens illustrated in
this chapter do not show the reverse-video

C

.

; to

Defining Operating Parameters

=y

Several parameter screens display

(yes) or =n (no) on the bottom line. To change the
current setting from yes to no or vice versa, press the button beneath the
example:

=y

or =n. For

L

R e f = y D t 1 = y D t 2 = y

1

The remainder of this chapter discusses the parameters contained within each of the
parameter submenus.

DSU Parameters

The DSU submenu provides the basic ISX 5312/5314 parameters. This submenu
contains the following parameters:

Locat

•

D S U E n a b l e D S U A l a r m s

23

D S U E n a b l e D S U A l a r m s

L

R e f = n D t 1 = y D t 2 = y D t 3 = y

D t 3 = y >

4

- Location

Escape Top

<

>

>

TxClk

•

SyClk

•

Beepr

•

A-LED

•

NLEna

•

ClkTL

•

TLLim

•

NMS

•
chapter)

SgBsy

•

APC

•

Spare

•

- Transmit Clock

- System Clock

- Beeper

- Alarm LED

- Network Loop Enable

- Clock Tolerance

- Tolerance Limit

- Network Management System (described in a separate section in this

- Signal Busy Bits

- Access Protection Capability

- Hot Spare

4-5

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Location

The Location parameter specifies whether your ISX 5312/5314 is located at the central
or remote site in the network. The proper setting is essential to T7 operation. When set
to Central, the unit accepts commands from the NMI only. When set to Remote, the unit
accepts commands from the T-1 line side. T7 commands are passed out the remote
unit’s NMI port unless a modem is attached.

Transmit Clock

The Transmit Clock parameters allow you to specify the source of timing signals for the
ISX 5312/5314's Transmit Clock. This parameter also defines the source of clock used
to derive all other clocks generated by the ISX 5312/5314. To do so, follow these steps,
starting from the Configuration Mode submenu:

1. Press the button beneath

L

D S U P o r t s D S 1 a D S 1 b >

1

I S X 5 3 1 4 C o n f i g M o d e

23

2. Press the button beneath

L

L o c a t T x C l k S y C l k B e e p r >

1

I S X 5 3 1 4 C o n f i g D S U

23

3. Press the button beneath

DSU

TxClk

Selct

.

4

.

4

.

Escape Top

<

>

Escape Top

<

>

L

S e l c t O r d e r

1

4-6

I S X 5 3 1 4 C o n f i g C l k

23

Escape Top

4

<

>

Defining Operating Parameters

4. The screen displays the current Transmit Clock setting and possible options.

Intrn

Press the > button to display additional options. The options are
timing);

DTE1, DTE2, DTE3, DTE4

external clock input);

DS1a, DS1b

(timing derived from the respective DTE

(timing derived from the respective

(internal

T-1 line). Press the button beneath the desired setting. The screen then displays
the revised setting.

L

D S U T x C l o c k = D T E 1

I n t r n D T E 1 D T E 2 D T E 3 >

1

L

I n t r n D T E 1 D T E 2 D T E 3

23

D S U T x C l o c k = D T E 2

4

Escape Top

<

>

>

5. Press the Escape button to return to the Configure Clock submenu.

The ISX 5312/5314 allows you to select the priority order of applicable fallback clocks
that can be used in the event the primary Transmit Clock fails. This parameter can also
be used to change the source of timing for the primary (order 0) clock. When the timing
is lost, the unit automatically switches to the fallback clocks in the designated order. If
all the selected fallback clocks fail, the unit automatically switches to internal timing.
When a higher-priority clock recovers for 20 seconds, the unit automatically switches to
that timing source if the Clock Tolerance parameter is disabled.

When the Clock Tolerance parameter is disabled, line clock failures are detected by LOS
and external clock failures are detected by a lack of transitions on the clock input. When
the Clock Tolerance parameter is enabled, the transmit clock source is compared against
an internal reference clock. The transmit clock source is declared invalid when it is out
of the user-specified range. (Refer to the "Clock Tolerance" section in this chapter for a
complete description.)

To select the priority order of the fallback clocks, follow these steps:

1. Press the button beneath

L

S e l c t O r d e r

1

Order

.

I S X 5 3 1 4 C o n f i g C l k

23

Escape Top

4

<

>

4-7

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

2. The screen displays the current source of timing for the primary Transmit Clock.

L

T x c l k O r d e r  = D T E 1

Escape Top

I n c D e c A c c

1

234

<

>

The display shows the following:

0

- indicates the primary Transmit Clock setting (order 0). The other

•
available options are

DTE1

•

- indicates DTE 1 is the current primary Transmit Clock source. The

other available options are

01

through 07 for the fallback clocks.

Int, DTE2, DTE3, DTE4, DS1a

, and

DS1b

3. To change the source of timing for the primary Transmit Clock, press the >

button. Press the button beneath
options. Press the button beneath

or

Acc

to scroll through the clock source

when the desired option is displayed.

Inc

Dec

Note: You can also change the Transmit Clock setting under the Select parameter
previously described.

.

L

T x c l k O r d e r 0 = , T E 2

I n c D e c A c c

1

234

4. Press the < button.

L

I n c D e c A c c

1

T x c l k O r d e r 0 = , T E 2

234

Escape Top

<

>

Escape Top

<

>

4-8

Defining Operating Parameters

Inc

5. Press the button beneath

to select the first fallback clock. The screen

displays the current source of timing for the first fallback clock.

L

T x c l k O r d e r  = I n t

Escape Top

I n c D e c A c c

1

234

<

>

6. To change the source of timing for the first fallback clock, press the > button.

Inc

Press the button beneath
Press the button beneath

L

T x c l k O r d e r 1 = , T E 1

Dec

or

Acc

to scroll through the clock source options.

when the desired option is displayed.

Escape Top

I n c D e c A c c

1

234

<

>

7. Repeat Steps 4 - 6 to set additional fallback clocks. Since, depending on the
application, a maximum of four fallback clocks are practical, select the
appropriate hierarchy and then fill in the remaining fallback clock selections
with the lowest priority desired or fill in the remaining selections with internal
timing.

System Clock

8. Press the Escape button two times to return to the Configure DSU submenu.

The System Clock parameter allows you to set the real-time clock. To do so, follow
these steps, starting from the Configure DSU submenu:

SyClk

1. Press the button beneath

L

L o c a t T x C l k S y C l k B e e p r >

1

I S X 5 3 1 4 C o n f i g D S U

23

.

Escape Top

4

<

>

4-9

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

2. The screen displays the date and time with the cursor located under the leftmost

digit. To increase the digit, press the 1 button; to decrease it, press the 2 button.
To copy a character into the next space, press the 3 button.

L

C l k =  2 - 1 5 - 9 6 1 5 : 1 1

I n c D e c C p y A c c

1

23

4

Escape Top

<

>

3. When the leftmost digit is set, press the > button to move the cursor to the next

digit. Then repeat Step 2 to set the digit. Continue in this manner until the
correct date and time are displayed.

L

C l k =  2 - 1 5 - 9 6 1 5 : 1 1

I n c D e c C p y A c c

1

23

4

Escape Top

<

>

4. Press the 4 button to enter the date and time into memory.

L

C l k = 0 1 - 1 6 - 9 7 1 6 : 0

Escape Top

Beeper

I n c D e c C p y A c c

1

23

4

<

>

5. Press the Escape button to return to the Configure DSU submenu.

The Beeper parameter defines the operation of the front panel beeper. Four options are
available:

None

•

•

•

•

- the beeper is disabled.

Keys

- the beeper sounds whenever a button is pressed.

Alrms

(Alarms) - the beeper sounds whenever an alarm is activated.

Both

- the beeper sounds whenever a button is pressed or an alarm is activated.

4-10

Alarm LED

Defining Operating Parameters

The Alarm LED parameter specifies whether the User LED lights when an alarm is
activated. The available options are

y

(yes) and n (no).

Note: When the ISX 5314 central site model is configured to operate in an ISX 5010
chassis (see “Setting Switches” in Chapter 2), the User LED lights to indicate power is
on. If you enable the Alarm LED parameter, the User LED will flash when an alarm is
active.

To set this parameter for each T-1 line, follow these steps, starting from the DSU
submenu:

A-LED

1. Press the button beneath

.

L

< B e e p r A - L E D N L E n a C l k T L >

1

I S X 5 3 1 4 C o n f i g D S U

23

4

Escape Top

<

>

2. The screen displays the current setting for each T-1 line. Press the 1 button to
scroll through the options for line A, and the 2 button for line B. When the
desired settings are displayed, press the Escape button to return to the Configure
DSU submenu.

L

D S U A l a r m L E D E n a b l e

D S a = n D S b = n

1

L

D S a = y D S b = n

23

D S U A l a r m L E D E n a b l e

4

Escape Top

<

>

Network Loop Enable

When the Network Loop Enable parameter is enabled, the ISX 5312/5314 honors
Payload Loopback and Line Loopback requests from the network. When disabled,
network loopback requests are not honored. This parameter is set independently for each
T-1 line. The available options are

y

(yes) and n (no).

4-11

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Clock Tolerance

The Clock Tolerance parameter specifies whether the ISX 5312/5314 automatically
switches to a lower-priority transmit clock source when the primary source is out of the
user-specified tolerance range. The available options are
parameter is enabled, the unit automatically switches to the fallback clocks in the order
designated under the Transmit Clock parameters. When a higher-priority clock recovers,
the unit does not switch to that timing source. The higher-priority clock source must be
selected manually from the T7 or SNMP manager’s console or from the ISX 5312/5314's
front panel. (Refer to "Transmit Clock" previously described in this chapter for
instructions.)

Note: It is recommended that you do not enable the Clock Tolerance parameter until an
installation is stable.

Tolerance Limit

Dsabl

and

Enabl

. When this

The Tolerance Limit parameter allows you to select the clock tolerance range limit. The
available options are
The range specified in AT&T Publication 62411 is +50 Hz at +32 ppm.

Busy Signal Bits

The Busy Signal Bits parameter allows you to select the 4-bit per unit DS0 channel
signaling code used in the trunk processing function. Trunk processing refers to the
ability to send signaling bits to adjacent units, indicating a particular condition (e.g.,
a busy signal) whenever an abnormal condition occurs on a T-1 interface. This
parameter appears only for units equipped with two T-1 line interfaces. The selected
code is used by both T-1 lines on the unit.

The default code (
code, such as FXS (Foreign Exchange Station) or FXO (Foreign Exchange Office), enter
the appropriate combination of 0s and 1s.

The trunk processing feature operates only when the lines are cross-connected. (Refer to
the "Daisy Chain" section in this chapter for a complete description of cross-connected
and daisy-chained lines.)

50

(+50 Hz),

1111

) is Four Wire Ear and Mouth (4-W E/M). To change to another

100

(+100 Hz),

150

(+150 Hz), and

200

(+200 Hz).

Access Protection Capability

The Access Protection Capability (APC) parameters allow you to interface the ISX
5312/5314 with Accunet’s T1.5 APC service function, which provides the automatic
transfer between two Accunet T1.5 access facilities when one T-1 line fails. These
parameters appear only for units equipped with two T-1 line interfaces.

4-12

Defining Operating Parameters

When the APC feature is enabled, channel mapping on DS1a is duplicated on DS1b.
DS1a (the primary line) and DS1b (the protection line) transmit the same information.
Both the primary and protection lines are monitored and the required statistics are
accumulated. The ISX 5312/5314 also allows you to initiate a switch to the protection
line on loss of signal (LOS). This option is an extension of Technical Reference
54017A1.

A transfer switch transfers service from the primary line to the protection line in the
event of a failure on the primary line, or from the protection line to the primary line
when the primary line is in a good state and the Revertive Mode parameter is enabled.
The criteria required for a transfer switch are defined in Technical Reference 54017A1.
These values can be set by the Telco via a TABS maintenance message. You cannot
change these values. You can view the current threshold value for Errored Seconds
(ES), Severely Errored Seconds (SES), and the line availability timer by pressing the
button under

Thrsh

in the APC Status submenu.

Before you can enable the APC feature, the ISX 5312/5314 must be configured as
follows:

• Make sure you are receiving the proper service from the Network Interface (NI).

• The Frame parameter must be set to ESF on both DS1a and DS1b.

• DS1a is the primary line and DS1b is the protection line. Therefore, there must be
no connections on DS1b.

• The Hot Spare feature must be disabled.

To enable the APC feature, follow these steps, starting from the Configure DSU
submenu:

APC

Mode

.

Escape Top

4

<

>

.

1. Press the button beneath

L

< S g B s y A P C S p a r e

1

I S X 5 3 1 4 C o n f i g D S U

23

2. Press the button beneath

L

M o d e I n h b t S w t c h R e v r t >

1

I S X 5 3 1 4 C o n f i g A P C

23

Escape Top

4

<

>

4-13

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Enabl

3. Press the button beneath

. The top line of the screen displays the revised
setting. If you have the Hot Spare feature enabled, the screen displays the
message:
line, the screen displays the message:

Invalid: Alt mode enable

. If you have any connections on the DS1b

Connections on Prot Line

parameter is not set to ESF, the screen displays the message:

APC

. Press any button to restore the display back to the current menu selection.

When the APC feature is enabled, the ISX 5312/5314 will not allow you to
change the Frame parameter on the DS1a and DS1b lines. It also will not allow
you to change the channel connection, signaling, or daisy-chain parameters on
the DS1b line.

. If the Frame

Invalid Config for

L

A P C F e a t u r e = D s a b l

D s a b l E n a b l

1

L

D s a b l E n a b l

2

A P C F e a t u r e = E n a b l

34

Escape Top

<

>

4. Press the Escape button to return to the Configure APC submenu.

The Inhibit parameter allows you to inhibit (prevent) a switch to the other line from the
current service line. When this parameter is enabled, whatever line is not currently
carrying the service is inhibited. For example, if the ISX 5312/5314 is currently carrying
the service on the primary line and you enable the Inhibit parameter, the unit will not
switch to the protection line in the event of a failure on the primary line.

To enable the Inhibit parameter, follow these steps:

Inhbt

1. Press the button beneath

.

L

M o d e I n h b t S w t c h R e v r t >

1

4-14

I S X 5 3 1 4 C o n f i g A P C

23

Escape Top

4

<

>

2. Press the button beneath
setting.

Defining Operating Parameters

Enabl

. The top line of the screen displays the revised

L

I n h i b i t S w t c h = D s a b l

D s a b l E n a b l

1

L

D s a b l E n a b l

2

I n h i b i t S w t c h = E n a b l

34

Escape Top

<

>

3. Press the Escape button to return to the Configure APC submenu.

The Switch parameter is primarily for use as a diagnostic tool to determine the actual
data path. It allows you to manually force the transfer of data from one line to the other.
The available options are:

Norml

•

(Normal) - forces data from the primary line to the protection line or vice

versa.

ForcA

•

(Force A) - forces data onto the primary line (DS1a) while sending a Blue
(AIS) alarm on the protection line (DS1b). The Blue alarm ensures that the other
end accepts data on DS1a only.

ForcB

•

(Force B) - forces data onto the protection line (DS1b) while sending a Blue
(AIS) alarm on the primary line (DS1a). The Blue alarm ensures that the other end
accepts data on DS1b only.

To manually force the transfer of data from one line to the other, follow these steps:

Swtch

1. Press the button beneath

L

M o d e I n h b t S w t c h R e v r t >

1

I S X 5 3 1 4 C o n f i g A P C

23

.

Escape Top

4

<

>

4-15

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

2. Press the button beneath the desired option.

L

I n i t i a t e A P C S w i t c h ?

N o r m l F o r c A F o r c B

1

L

F u n c t i o n C o m p l e t e d

2

I n i t i a t e A P C S w i t c h ?

34

Escape Top

<

>

3. Press the Escape button two times to return to the Configure APC submenu.

If you select the Force A or Force B option, the ISX 5312/5314’s Test LED lights to
indicate that a test is in progress. To terminate the test and turn off the LED, press the

Norml

button beneath

or use the RTN (Return to Normal) function as described in the

“RTN Function” section in Chapter 6.

When the Revertive Mode parameter is enabled, the ISX 5312/5314 switches back to the
primary line from the protection if the primary line has been in a good state for a
specified amount of time. The amount of time, from 0 to 900 seconds, is determined by
the Telco and programmed into the ISX 5312/5314 by the Telco via a TABS
maintenance message. The default values are: ES - 20 seconds, SES - 2 seconds, and
Availability Timer - 900 seconds. When this parameter is disabled, the ISX 5312/5314
does not switch back to the primary line unless a failure occurs on the protection line and
the primary line is in a good state.

4-16

To enable the Revertive Mode parameter, follow these steps:

1. Press the button beneath

L

M o d e I n h b t S w t c h R e v r t >

1

I S X 5 3 1 4 C o n f i g A P C

23

Revrt

.

4

Escape Top

<

>

2. Press the button beneath
setting.

Defining Operating Parameters

Enabl

. The top line of the screen displays the revised

L

R e v e r t i v e M o d e = D s a b

l

Escape Top

D s a b l E n a b l

1

L

2

R e v e r t i v e M o d e = E n a b l

34

<

>

D s a b l E n a b l

3. Press the Escape button to return to the Configure APC submenu.

The Switch on LOS parameter allows you to initiate a switch from the primary line to
the protection line on loss of signal. To enable this parameter, follow these steps:

1. Press the > button.

L

I S X 5 3 1 4 C o n f i g A P C

M o d e I n h b t S w t c h R e v r t >

1

23

4

Escape Top

<

>

2. Press the button beneath

L

< S w L O S

1

I S X 5 3 1 4 C o n f i g A P C

23

SwLOS

.

Escape Top

4

<

>

4-17

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

Enabl

3. Press the button beneath

. The top line of the screen displays the new

setting.

Hot Spare

L

S w i t c h o n L O S = D s a b l

D s a b l E n a b l

1

L

D s a b l E n a b l

2

S w i t c h o n L O S = E n a b l

34

Escape Top

<

>

The Hot Spare parameters specify whether the ISX 5312/5314 automatically switches to
the spare T-1 line in the event of a failure on the primary T-1 line, or from the spare line
to the primary line when the primary line is in a good state and the Revertive Mode
parameter is enabled for a user-specified amount of time. These parameters appear only
for units equipped with two T-1 line interfaces.

Before you can enable the Hot Spare feature, the ISX 5312/5314 must be configured as
follows:

• DS1a is the primary line and DS1b is the spare line. Therefore, there must be no
connections on DS1b.

4-18

• The APC feature must be disabled.

To enable the Hot Spare feature, follow these steps, starting from the Configure DSU
submenu:

1. Press the button beneath

L

< S g B s y A P C S p a r e

1

I S X 5 3 1 4 C o n f i g D S U

23

Spare

.

Escape Top

4

<

>

2. Press the button beneath

Mode

Defining Operating Parameters

.

L

M o d e S w t c h

1

I S X 5 3 1 4 C o n f i g S p a r e

23

3. Press the button beneath

4

Enabl

. The top line of the screen displays the revised

Escape Top

<

>

setting. If you have the APC feature enabled, the screen displays the message:

Invalid: Alt mode enable

screen displays the message:

. If you have any connections on the DS1b line, the

Invalid configuration

. Press any button to restore
the display back to the current menu selection. When the Hot Spare feature is
enabled, the ISX 5312/5314 does not allow you to change the channel
connection, signaling, or daisy-chain parameters on the DS1b line.

L

D s a b l E n a b l

1

S p a r e F e a t u r e = D s a b l

2

34

Escape Top

<

>

S p a r e F e a t u r e = E n a b l

L

D s a b l E n a b l

4. Press the Escape button to return to the Configure Spare submenu.

The Switch parameter is primarily for use as a diagnostic tool to determine the actual
data path. It allows you to manually force the transfer of data from one line to the other.
The available options are:

Norml

•

•

(Normal) - forces data from the primary line to the spare line or vice versa.

ForcA

(Force A) - forces data onto the primary line (DS1a) while sending a Blue
(AIS) alarm on the spare line (DS1b). The Blue alarm ensures that the other end
accepts data on DS1a only.

ForcB

•

(Force B) - forces data onto the spare line (DS1b) while sending a Blue
(AIS) alarm on the primary line (DS1a). The Blue alarm ensures that the other end
accepts data on DS1b only.

4-19

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

To manually force the transfer of data from one line to the other, follow these steps:

Swtch

1. Press the button beneath

.

L

M o d e S w t c h

1

I S X 5 3 1 4 C o n f i g S p a r e

23

4

Escape Top

<

>

2. Press the button beneath the desired option.

L

I n i t i a t e S p a r e S w i t c h ?

N o r m l F o r c A F o r c B

1

L

F u n c t i o n C o m p l e t e d

2

I n i t i a t e S p a r e S w i t c h ?

34

Escape Top

<

>

3. Press the Escape button two times to return to the Configure Spare submenu.

If you select the Force A or Force B option, the ISX 5312/5314’s Test LED lights to
indicate that a test is in progress. To terminate the test and turn off the LED, press the
button beneath

Norml

or use the RTN (Return to Normal) function as described in the

“RTN Function” section in Chapter 6.

When the Revertive Mode parameter is enabled, the ISX 5312/5314 switches back to the
primary line from the spare line if the primary line has been in a good state for the
amount of time selected under the Restoral Timer parameter. When this parameter is
disabled, the ISX 5312/5314 does not switch back to the primary line unless a failure
occurs on the spare line and the primary line is in a good state.

To enable the Revertive Mode parameter, follow these steps:

Note: When management is via SNMP, you must set the Mode parameter to disabled
before you can enable this parameter.

4-20

1. Press the button beneath

Revrt

Defining Operating Parameters

.

L

M o d e S w t c h R e v r t A l a r m >

1

2. Press the button beneath

I S X 5 3 1 4 C o n f i g S p a r e

23

Enabl

. The top line of the screen displays the revised

4

Escape Top

<

setting.

L

R e v e r t i v e M o d e = D s a b

D s a b l E n a b l

1

L

D s a b l E n a b l

2

R e v e r t i v e M o d e = E n a b l

34

l

Escape Top

<

3. Press the Escape button to return to the Configure Spare submenu.

>

>

The Alarm parameter allows you to specify the conditions (alarms generated on the
DS1a line) under which the ISX 5312/5314 automatically switches from the primary line
to the spare line.

To enable or disable each alarm condition, follow these steps:

Note: When management is via SNMP, you must set the Mode parameter to disabled
before you can enable this parameter.

1. Press the button beneath

L

M o d e S w t c h R e v r t A l a r m >

12

I S X 5 3 1 4 C o n f i g S p a r e

Alarm

3

.

Escape

4

<

Top

>

4-21

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

2. The screen displays the current setting for each DS1 line alarm condition. The

y

available options are

(yes) and n (no). Press the 1 button to scroll through the

options for the Blue alarm, the 2 button for the Yellow alarm, the 3 button for
the Red alarm. When the desired options are displayed, press the Escape button
to return to the Configure Spare submenu.

L

E n a b l S p a r e A l a r m s

B l u = y Y l w = y R e d = y

1

L

B l u = n Y l w = y R e d = y

2

E n a b l S p a r e A l a r m s

3

4

Escape Top

<

>

The Restoral Timer parameter allows you to specify the amount of time that the DS1 line
can be in a good state before the ISX 5312/5314 switches back to the primary line from
the spare line. The available options are

5, 20, 40

, and 60 seconds.

To set the Restoral Timer parameter, follow these steps:

1. Press the button beneath

L

< A l a r m R e s T m

12

I S X 5 3 1 4 C o n f i g S p a r e

ResTm

.

Escape

3

4

<

Top

>

2. Press the button beneath the desired delay time. The top line of the screen
displays the revised setting.

L

R e s t o r a l T i m e r = 6 0

5 2 0 4 0 6 0

12

L

5 2 0 4 0 6 0

4-22

3

R e s t o r a l T i m e r = 4 0

4

Escape

Top

<

>

Network Management System

The Network Management System submenu allows you to select Milgo’s proprietary
management protocol for management from a CMS 400 T7 manager. Point-to-Point
Protocol (PPP), Serial Line Internet Protocol (SLIP), and Ethernet protocols are
available for SNMP management via a CMS 400 or generic SNMP manager. Also
available is Console protocol for management from an ASCII terminal. This submenu
also allows you to specify the NMS channel rate and the network terminal server
connection.

When T7 protocol is selected and the framing format is FAS or CRC-4, you may also
select a method for transporting T7 data via dial modems and a Public Switched
Telephone Network (PSTN) line and/or via a timeslot on either DS1 line. Another
method of transporting T7 data is via the DTE ports. This method is described in the
“T7 Mode” section in this chapter. The Network Management System submenu contains
the following parameters:

•

Speed

- Channel Rate

Modem

•

Defining Operating Parameters

Protocol

Chanl

•

•

•

- Channel

Prtcl

- Protocol

NTS

- Network Terminal Server

Note: The Protocol, Speed, and NTS parameters should not be changed from a remote
unit. Changing these parameters results in terminating the remote session.

The first NMS parameter that must be defined is the Protocol. The available options are

T7, CONS

(Console),

SLIP, PPP

, and

ENet

(Ethernet). The correct selection depends on

the type of device connected to the ISX 5312/5314.

Note: For central site models, this parameter setting applies only if the NMI port is set
for Network Management mode. See “Setting Switches” in Chapter 2 for more
information.

Before you can select SLIP, PPP, or Ethernet, the ISX 5312/5314 must be configured as
follows:

• The T7 Modem Type parameter must be set to None. If you attempt to enable
SLIP, PPP, or Ethernet with a modem attached, the screen displays the message:

N/A - MODEM Attached

.

4-23

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

• The Remote T7 parameter must be set to Disabled on all DTEs. If this parameter
is enabled on any DTE and you attempt to enable SLIP, PPP, or Ethernet, the
screen displays the message:

N/A - T7 enabled on DTE

• A DS0 channel cannot be assigned for remote T7 on either DS1 line. If a channel
has been assigned on DS1a or DS1b, and you attempt to enable SLIP, PPP, or
Ethernet, the screen displays the message:

Speed

The Speed parameter specifies the Console, T7, SLIP, or PPP channel rate. When the
Protocol parameter is set to Console, the available options are

9600, 19200, 38400, 57600

bps, and
(Autobaud). The Autobaud option appears on the screen only when the Protocol
parameter is set to Console. When the Protocol parameter is set to PPP or SLIP, the ISX
5312/5314 does not allow you to select the
and SLIP protocols, the available options are
bps, and

115k

(115.2 Kbps actual rate). The default rate is 19.2 Kbps.

115k

(115.2 Kbps actual rate), and

75, 300

2400, 4800, 9600, 19200, 38400, 57600

.

N/A - T7 enabled on DS1

75, 300, 1200, 2400, 4800

Auto

1200

, or

bps channel rates. For PPP

.

,

The Autobaud feature allows the ISX 5312/5314 to automatically determine the terminal
baud rate and set the serial port to operate at the same rate. It supports 300, 1200, 2400,
4800, 9600 bps, and 14.4, 19.2, 28.8, 38.4, 57.6, 115.2 Kbps baud rates.

The Autobaud feature is disabled when the Protocol parameter is changed from Console
to another protocol (T7, SLIP, PPP, or Ethernet). The ISX 5312/5314 reverts to the 19.2
Kbps default baud rate.

NTS

The NTS parameter specifies the network terminal server connection. The available
options are
ISX 5312/5314 is connected to an INX-NTS. Select
connected to any other device.

T7 Via Dial Modems

The ISX 5312/5314 supports the applications shown in Figures 4-1 through 4-4 when
transporting T7 data via dial modems. You can use Milgo’s ALM 3226 modem or a
generic modem that supports Hayes AT operation.

Std

(Standard) and

INX

(Milgo INX-NTS). Select

INX

when the

Std

when the ISX 5312/5314 is

4-24

Defining Operating Parameters

CMS 400

EDM

MODEM

PSTN

MODEM

NMI
PORT

ISX 5312/5314

T-1

CENTRAL

Figure 4-1. Dial Modem Used Between CMS 400 and a Central ISX 5312/5314

CMS 400

EDM

NMI
PORT

CENTRAL

ISX 5312/5314

T-1

MODEM

T-1

ISX 5312/5314

PRIMARY COMMAND PAT

PSTN

MODEM

PORT

REMOTE

NMI

Figure 4-2. Dial Modem Providing a Primary Command Data Path to a Remote ISX 5312/5314

PRIMARY COMMAND PAT

CMS 400

EDM

NMI
PORT

CENTRAL

ISX 5312/5314

T-1

MODEM

T-1

NETORK

PRIMARY COMMAND PAT

PSTN

T-1

ISX 5312/5314

MODEM

PORT

REMOTE

NMI

Figure 4-3. Dial Modem Providing a Backup Command Data Path to a Remote ISX 5312/5314

4-25

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

PRIMARY COMMAND PAT

T-1

NETORK

PSTN

T-1

CENTRAL

ISX 5312/5314

CMS 400

EDM

DIANOSTIC

NMS

DEICE

NMI
PORT

CENTRAL

ISX 5312/5314

T-1

DIANOSTIC CANNEL

MODEM MODEM

Figure 4-4. Dial Modem Providing a Diagnostic Channel to a Remote ISX 5312/5314

The general characteristics of the dial T7 path are as follows:

• The remote ISX 5312/5314 can automatically dial the CMS 400 if the remote unit
has a Dial Condition Event to report and a modem connection has not been
established. A Dial Condition Event is defined as a Red, Blue, or Yellow alarm
generated on a T-1 line that causes the remote unit to dial the CMS 400. These
alarms can be individually enabled or disabled from the ISX 5312/5314’s front
panel. The CMS 400 can dial the remote ISX 5312/5314 if the user requests
statistics or wants to download parameters and a modem connection has not been
established.

NMI

PORT

• The remote ISX 5312/5314 hangs up when it receives a hang-up command from
the CMS 400. If the CMS 400 initiated the modem link, the ISX 5312/5314 can
also hang up after a user-selectable number of minutes of inactivity. If the
ISX 5312/5314 initiated the link, it can hang up after a user-selectable number of
seconds of inactivity.

• Whenever a modem link is established, the ISX 5312/5314 sends its serial number
in the form of a Mayday before it sends any other messages. This communication
is defined as the ID Notification.

• If the ISX 5312/5314 hangs up for any reason, the first message it sends over the
T-1 line is an ID Notification, telling the CMS 400 to switch communication back
to the T-1 line for that unit.

When an ISX 5312/5314 is configured as a central unit, the modem link is the only path
available for command data. Therefore, the ISX 5312/5314 dials the modem whenever
there is data waiting to go out of the NMI port. After dialing, the modem link has all the
characteristics of a direct cable link between the CMS 400 and the ISX 5312/5314 until
the modem is hung up.

When an ISX 5312/5314 configured as a remote unit receives a command, it sends the
response back on the same T7 path that the command came in on. All commands are
processed regardless of the path they came in on.

4-26

Defining Operating Parameters

When a remote ISX 5312/5314 has an alarm to report, the following events occur:

1. The ISX 5312/5314 does the normal processing for the T-1 line.

2. If the modem is connected to the CMS 400, the remote unit sends an alarm over
the modem to the CMS 400.

3. If the modem is not connected to the CMS 400, but the alarm is a Dial Condition
Event, the remote unit will dial the number stored in the ISX 5312/5314’s
memory. If the modem link is established, the remote unit will send an ID
Notification and then the alarm.

The hang-up characteristics of an ISX 5312/5314 are as follows:

• The unit hangs up after a user-specified period of inactivity unless a hang-up
command is received from the CMS 400 first. The hang-up command is
accomplished with a T7 command from the CMS 400, which can be sent over any
valid T7 path. When the unit receives this command, it contacts the modem and
issues a hang-up sequence.

• A modem link can be terminated at any time from the front panel of the unit.

• Regardless of where the hang-up originated, an ID Notification is the first message
sent over the T-1 link if the unit is configured as a network management remote.

The characteristics of the modem link at the CMS 400 are as follows:

• You can configure the network in the usual manner, placing the ISX 5312/5314
units on whatever network path you desire. In this way, you can dictate which
type of network connection is established initially: a link through the T-1 or over
a Dial T7 path.

• If the CMS 400 receives an ID Notification for a unit that is attached to a different
channel, the CMS 400 switches that unit to the channel on which the ID
Notification was received.

• Duplicate alarms may be received from a T-1 link and a modem link, especially if
the T-1 line is intermittent. If this occurs, the CMS 400 needs only to look at the
alarms received on the channel to which the unit is attached. The alarms from the
other channel can be ignored.

4-27

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

To control the Dial T7 feature, you must enter the NMS Configuration submenu. To do
so, follow these steps, starting from the Top Level menu:

Local

1. Press the button beneath

.

T

E x c a l I S X 5 3 1 4 D T 1 S A

L o c a l A d d r R T N

1

2. Press the button beneath

L

2

3

Confg

.

I S X 5 3 1 4 L o c a l M o d e

4

S t a t s C o n f g D i a g S e c u r

1

3. Press the button beneath

L

23

DSU

.

4

I S X 5 3 1 4 C o n f i g M o d e

D S U P o r t s D S 1 a D S 1 b >

1

23

4

Escape Top

<

>

Escape Top

<

>

Escape Top

<

>

4. Press the > button two times.

L

L o c a t T x C l k S y C l k B e e p r >

1

L

< B e e p r A - L E D N L E n a C l k T L >

1

4-28

I S X 5 3 1 4 C o n f i g D S U

23

I S X 5 3 1 4 C o n f i g D S U

23

Escape Top

4

<

>

Escape Top

4

<

>

5. Press the button beneath

NMS

Defining Operating Parameters

.

L

I S X 5 3 1 4 C o n f i g D S U

Escape Top

< C l k T L T L L i m N M S S g B s y >

1

23

6. Press the button beneath

Modem

4

. This submenu is only available for T7 network

<

>

management. (If you have SLIP, PPP, or Ethernet enabled, the screen displays
the message:

Invalid: SLIP/PPP active

. Press any button to return the display

back to the current menu selection.)

L

I S X 5 3 1 4 N M S C o n f i g

S p e e d M o d e m C h a n l P r t c l

1

23

4

Escape Top

<

>

7. The screen displays the Modem Configuration submenu. Press the button
beneath

Conn

.

L

I S X 5 3 1 4 M o d e m C o n f i g

Escape Top

T y p e C o n n

1

23

4

<

>

8. The screen displays the first four parameter submenus. Press the > button to
scroll through the remaining options.

L

T 7 M O D E M C o n n e c t C o n f g

D i a l D i s c S e t u p P h o n # >

1

L

2

34

T 7 M O D E M C o n n e c t C o n f g

< P h o n # D c o n d R e t r y I n T m r

Escape Top

<

>

4-29

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

The T7 Modem Connect Configuration submenu allows you to perform the following
functions:

• Add characters to the setup string for a generic modem.

• Enter the telephone number.

• Specify the conditions under which the remote ISX 5312/5314 automatically dials
the CMS 400.

• Specify the number of times the ISX 5312/5314 redials a call if the previous
attempt is unsuccessful.

• Specify the conditions under which the remote ISX 5312/5314 automatically
disconnects a call.

• Originate calls.

• Disconnect calls.

The following sections describe each of these procedures.

Adding Characters to the Setup String

The Setup parameter allows you to add 40 characters maximum to a generic modem’s
predefined setup string. (This parameter is non-functional for the ALM 3226.) The
modem must support the predefined setup string: AT&FE0Q0V0S7=nnn. Therefore,
do not use the following commands:

• Factory Defaults &F

• Echo Mode E

• Quiet Mode Q

• Response Type V

• Connection Timer S Register 7

Refer to your modem user’s manual to configure the applicable modem parameters as
listed in Table 4-1.

4-30

Defining Operating Parameters

Table 4-1. Generic Modem Parameters

Modem Parameter Value

Results Codes Required 0, 1, 2, 3, 4, 5, 7, 8, (10). Do not use 6.

Data Carrier Detect (DCD) Follows true carrier.

Data Terminal Ready (DTR)

Forced On.

Signal

Asynchronous Operation Enabled.

Ignore Request-to-Send (RTS)

Clear-to-Send (CTS) Signal forced On.

Signal

Data Set Ready (DSR) Signal Forced On.

Clock Source Internal Transmit.

Flow Control Off (modem to modem and modem to

DTE).

Auto Answer Disabled.

Baud Rate 2400 bps.

Data Compression Off.

Auto Speed Adjustments Disabled.

Error Correction Disabled.

Dial Line Operation Enabled.

Escape Left at default character 43 (+).

Carriage Return Left at default character 13.

Line Feed Left at default character 10.

Escape Code Guard Time Leave at the 1-second default.

Respond to Remote Test Enabled.

Inactivity Timer Disabled.

4-31

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

To add characters to the predefined setup string, follow these steps, starting from the T7
Modem Connect Configuration submenu:

Setup

1. Press the button beneath

.

L

D i a l D i s c S e t u p P h o n # >

1

T 7 M O D E M C o n n e c t C o n f g

2

34

Escape Top

<

>

2. Use the 1 and 2 buttons to enter the desired character in each space. Use the <
and > buttons to move from space to space. The flashing > arrow in the right
corner of the screen indicates that there are more available spaces to the right.

L

G e n S e t u p " . . . . . . . . . . >

I n c D e c A c c n e x t

1

2

34

Escape Top

<

>

If you want to insert a character between two entered characters or delete an entered
character, follow Step 3. If you want to copy an entered character, clear an entered
character, or clear all entered characters, follow Step 4. If you do not want to use any of
these options, skip to Step 5.

4-32

Note: On standalone models, the backslash character (\) appears on the screen as a
with an equal sign (=) through it.

3. Press the 4 button. You can now insert a character by pressing the 1 button,
delete a character by pressing the 2 button, or delete a character and move the
cursor one space to the left by pressing the 3 button. When finished, press the 4
button two times.

L

G e n S e t u p " . . . . . . . . . . >

I n c D e c A c c n e x t

1

L

I n s D e l B c k S p n e x t

2

G e n S e t u p " . . . . . . . . . . >

34

Escape Top

<

>

Y

Defining Operating Parameters

4. Press the 4 button two times. You can now copy a character into the next space
by pressing the 1 button, clear a character by pressing the 2 button, or clear all
characters by pressing the 3 button. When finished, press the 4 button.

L

G e n S e t u p " . . . . . . . . . . >

I n c D e c A c c n e x t

1

L

C p y C l e a r C l A l l n e x t

2

G e n S e t u p " . . . . . . . . . . >

34

Escape Top

<

>

5. When the desired characters are displayed, press the 3 button to enter them into
memory.

L

G e n S e t u p 4 1 1 # . . . . . . . >

I n c D e c A c c n e x t

1

2

34

Escape

<

Top

>

Entering the Telephone Number

For both automatic and manual call origination to function properly, you must enter into
memory the telephone number of the modem you want to call. The number can be a
maximum of 38 characters long. The characters that you can enter in the telephone
number are digits
enter a number, press the button beneath

0

through 9, P, T, W, @, !, #, *, (, ), -, commas, and blank spaces. To

Phon#

. Then follow the instructions given in

the previous section, “Adding Characters to the Setup String.”

Automatic Dial

The Dial Conditions parameters specify the Dial Condition Events (alarms generated on
each T-1 line on the remote unit) under which the remote ISX 5312/5314 automatically
dials the CMS 400. You can enable or disable each alarm independently for each T-1
line.

4-33

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

To set Dial Conditions parameters for each T-1 line, follow these steps, starting from the
T7 Modem Connect Configuration submenu:

Dcond

1. Press the button beneath

.

L

< P h o n # D c o n d R e t r y I n T m r

1

2. Press the button beneath

T 7 M O D E M C o n n e c t C o n f g

interface, the

2

DS1b

submenu does not appear on the screen. The parameters are

34

DS1a

. If your unit is equipped with one T-1 line

Escape Top

<

>

identical for both DS1 submenus.

L

D S 1 a D S 1 b

1

T 7 D i a l C o n d i t n s C o n f g

23

4

Escape Top

<

>

3. The screen displays the current setting for each DS1a Dial Condition Event.

Press the 1 button to scroll through the options for the Blue alarm, the 2 button
for the Yellow alarm, and the 3 button for the Red alarm. When the desired
options are displayed, press the Escape button two times to return to the T7
Modem Connect Configuration submenu.

L

D S 1 a D i a l C o n d C o n f i g

B l u = n Y e l = n R e d = n

1

L

B l u = y Y e l = n R e d = n

Retry Attempts

The Retry parameter specifies the maximum number of times the ISX 5312/5314
automatically redials a call if the previous attempt is unsuccessful. The available options

are 1

, 3, 5, and 10. When the maximum number of dial attempts fail, you must clear
them before the unit will automatically dial again. To do so, enter DSU Status submenu
and press the buttons beneath

4-34

2

D S 1 a D i a l C o n d C o n f i g

34

NMS/Modem/Retry/Clear

.

Escape Top

<

>

Defining Operating Parameters

Automatic Disconnect

The Inactivity Timer parameters specify the amount of time a modem link can be
inactive before the remote ISX 5312/5314 automatically disconnects the call. To set the
Inactivity Timer parameters, follow these steps starting from the T7 Modem Connect
Configuration submenu:

InTmr

1. Press the button beneath

.

L

< P h o n # D c o n d R e t r y I n T m r

1

2. Press the button beneath

T 7 M O D E M C o n n e c t C o n f g

2

34

MdTmr

. This parameter allows you to specify the

Escape Top

<

>

number of seconds, from 0 through 120, the ISX 5312/5314 waits when it places
a call to the far-end modem for a response before it automatically disconnects
the call. This time is in addition to a 10-second default time. Dialing time is
included in the amount of time you select.

L

M d T m r R e m o t C M S

1

M O D E M I n a c t i v i t y C o n f g

2

34

Escape Top

<

>

3. The screen displays a 3-digit field in the top line with a cursor under the leftmost

digit. To increase the digit, press the 1 button; to decrease it, press the 2 button.
To copy a character into the next space, press the 3 button. Press the < and >
buttons to move from space to space.

L

I n c D e c C p y A c c

1

C o n A t t m p t T i m e =  2 0 s

2

34

Escape Top

<

>

4-35

Excalibur ISX 5312/5314 T-1 Multiplexer Installation and Operation

4. When the desired response time is displayed, press the 4 button. Then press the
Escape button to return to the Modem Inactivity Configuration submenu.

L

C o n A t t m p t T i m e = 0 ! 0 s

Escape Top

I n c D e c C p y A c c

1

2

5. Press the button beneath

34

Remot

. This parameter allows you to select the number

<

>

of seconds a modem link initiated by the remote ISX 5312/5314 can remain
inactive before the ISX 5312/5314 automatically disconnects the call. The
options are

L

0

(automatic disconnect disabled) through

M O D E M I n a c t i v i t y C o n f g

M d T m r R e m o t C M S

1

2

34

120

seconds.

Escape Top

<

>

6. The screen displays a 3-digit field in the top line with a cursor under the leftmost
digit. To increase the digit, press the 1 button; to decrease it, press the 2 button.
To copy a character into the next space, press the 3 button. Press the < and >
buttons to move from space to space.

4-36

L

R e m I n a c t T i m e =  6 0 s

Escape Top

I n c D e c C p y A c c

1

2

34

<

>

7. When the desired inactivity time is displayed, press the 4 button. Then press the
Escape button to return to the Modem Inactivity Configuration submenu.

L

R e m I n a c t T i m e = 0 % 0 s

I n c D e c C p y A c c

1

2

34

Escape Top

<

>