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Cisco 3600 Series Multiservice Platforms

Understanding 1- or 2-Port ISDN PRI/Channelized T1 Network Module

Cisco - Understanding 1- or 2-Port ISDN PRI/Channelized T1 Network Module

Introduction

The channelized T1/ISDN Primary Rate Interface (PRI) modules are available with and without a built-in channel service unit (CSU) and with one or two ports. The channelized T1/ISDN PRI modules connect to an external CSU. The channelized T1/ISDN PRI CSU modules connect directly to the Telco network. Each of the T1 modules provides up to 24 virtual channels per T1 port.

hw-t1-a.gif

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

This document is not restricted to specific software and hardware versions.

Conventions

Refer to Cisco Technical Tips Conventions for more information on document conventions.

Product Numbers

NM-1CT1 One-Port Channelized T1/ISDN-PRI Network Module
NM-2CT1 Two-Port Channelized T1/ISDN-PRI Network Module
NM-1CT1-CSU One-Port Channelized T1/ISDN-PRI with CSU Network Module
NM-2CT1-CSU Two-Port Channelized T1/ISDN-PRI with CSU Network Module

Refer to the Fast Ethernet Plus Channelized T1/PRI.

Features

  • One or two T1 ports

  • Supports channelized T1 or ISDN PRI

    • Each port is configured independently. You can configure one port for ISDN PRI and the other for channelized T1.

  • Available with or without a CSU

  • Receiver sensitivity

    • With CSU, 26 dB or 36 dB, selected by the cablelength command

    • Without CSU, 14 dB

  • For reliable operation, a 3 dB margin is recommended.

  • The data service unit (DSU) interface (NM-1CT1 and NM-2CT1) is DB-15.

  • The CSU interface is RJ-48C

Platform Support

Product Name Cisco 2600 Cisco 2600XM Cisco 3620, 3640 Cisco 3631 Cisco 3660 Cisco 2691, 3725, 3745
NM-1CT1 Cisco IOS® Software Releases 11.3(4)T, all 12.x all Cisco IOS Software releases all Cisco IOS Software releases all Cisco IOS Software releases Cisco IOS Software Releases 12.0(7)XK, 12.1T, 12.2, 12.2T all Cisco IOS Software releases
NM-1CT1-CSU Cisco IOS Software Releases 11.3(4)T, all 12.x all Cisco IOS Software releases all Cisco IOS Software releases all Cisco IOS Software releases Cisco IOS Software Releases 12.0(7)XK, 12.1T, 12.2, 12.2T all Cisco IOS Software releases
NM-2CT1 Cisco IOS Software Releases 11.3(4)T, all 12.x all Cisco IOS Software releases all Cisco IOS Software releases all Cisco IOS Software releases Cisco IOS Software Releases 12.0(7)XK, 12.1T, 12.2, 12.2T all Cisco IOS Software releases
NM-2CT1-CSU Cisco IOS Software Releases 11.3(4)T, all 12.x all Cisco IOS Software releases all Cisco IOS Software releases all Cisco IOS Software releases Cisco IOS Software Releases 12.0(7)XK, 12.1T, 12.2, 12.2T all Cisco IOS Software releases

Note: The Cisco IOS Software releases provided are typically the minimum version required in order to support the platform, module, or feature in question. Use the Software Advisor (registered customers only) in order to choose appropriate software for your network device: match software features to Cisco IOS and CatOS releases, compare IOS releases, or find out which software releases support your hardware.

Field Notices

Configuration

Each interface on the Cisco 2600/3600 series is configured as a slot/unit number. On the 1- or 2-Port ISDN PRI/Channelized T1 Network Module, the interfaces are addressed as controller <slot>/<unit>. Simultaneous ISDN PRI and BRI modules in the same chassis requires Cisco IOS Software Release 11.3(3)T.

Refer to Configuring Channelized E1 and Channelized T1 for configuration assistance.

Configure the interface as you would normally configure a Channelized T1/PRI interface on any other router.

Related Information

Updated: Mar 03, 2008
Document ID: 7249