Cisco WAN Interface Cards

Document ID: 7255

Contents

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Product Numbers
Features
Platform Support
Sample Configuration
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Related Information

Introduction

The T1 Data Service Unit/Channel Service Unit (DSU/CSU) WAN Interface Card (WIC) is an integrated, fully managed DSU/CSU for T1 or fractional T1 service. Cisco 1600, 1700, 2600 and 3600 series routers support the T1 CSU/DSU WIC, which provides a cost-effective router-DSU/CSU combination with these benefits of integration:

• Fewer devices and cables to deploy and manage

• Remote and local configuration, monitoring, and troubleshooting through the Cisco IOS® Command Line Interface (CLI)

• Flexibility and investment protection

• Single-vendor support

• Enhanced reliability

• Physical space savings

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

Features

The T1 CSU/DSU WIC provides full or fractional T1 service. T1 CSU/DSU WIC does not do channelized T1 or ISDN Primary Rate Interface (PRI).

Refer to the WIC1-DSU-T1 Data Sheet for further details.

Platform Support

Note: The service-module t1 fdl command is available on Cisco 2600 routers in Cisco IOS Software Releases 12.0(3), 12.0(3)S, 11.3(8)T, and 12.0(3)T.

Note: The Cisco IOS software releases provided are typically the minimum version necessary to support the platform, module, or feature in question. Use the Software Advisor 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. Use the Software Advisor ( registered customers only) and other tools available online.

Sample Configuration

Here is a sample configuration for a WIC-1DSU-T1 interface card. There are no controller or controller-related commands, such as channel-group to configure. This WIC uses service-module commands. The syntax with regard to the framing, line-code, and others remains the same. In addition, the Cisco IOS configuration for this WIC is the same as that for the Cisco 2524 Router. Refer to Configuring Cisco Integrated Data Service Unit/Channel Service Unit (DSU/CSU) Modules and WAN Interface Cards for more information on the commands that you can use.

Note: Here are the differences in the configuration of the WIC-1DSU-T1 from the 2524 router:

• Does not implement V.54 loop codes (until Cisco IOS Software Release 12.0(3)T).

• Facilities Data Link (FDL) is off by default. You can configure FDL to either the American National Standards Institute (ANSI) or AT&T 54016, but not both at the same time.

This scenario uses a full T1 card with 24 timeslots:

Interface serial 0/0
service-module t1 clock source internal
service-module t1 timeslots 1-24 speed 64                 
service-module t1 framing esf
service-module t1 linecode b8zs
ip address 10.1.1.1 255.255.255.0
encapsulation ppp
fair-que
no shut

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Related Information

• Cisco T1 DSU/CSU WAN Interface Card (WIC-1DSU-T1)
• Cisco Interface Cards Hardware Installation Guide
• Installing Cisco Interface Cards in Cisco Access Routers
• Technical Support & Documentation - Cisco Systems