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 IOSЃ 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

Contents

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Features
Supported Platforms
Sample Configuration
NetPro Discussion Forums - Featured Conversations
Related Information

Introduction

This document provides an overview of the WIC-1DSU-T1 and WIC-1DSU-T1-V2 interface cards and provides a sample configuration to use these interface cards on Cisco 1600, 1700, 2600,3600 and 3700 router platforms. The WIC-1DSU-T1-V2 is an updated version of the WIC-1DSU-T1 interface card (which has reached End-of-Life [EoL]/End-of-Sale [EoS]), that offers additional supported features with the same performance.

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.

Features

The T1 Data Service Unit/Channel Service Unit (CSU/DSU) WAN interface card provides full or fractional T1 service. The T1 CSU/DSU WIC does not provide channelized T1 or ISDN PRI. Refer to the Product data sheet for more information. Facilities Data Link (FDL) is off by default, and you must configure FDL to either American National Standards Institute (ANSI) or AT&T 54016, but not both at the same time.

The Cisco T1 DSU/CSU -V2 WIC is supported on the Cisco 1700 Series, 2600XM Series, 3631, and 3700 Series routers, and Cisco ICS 7750 software.

• T1 or fractional T1 network interface

• Wet T1 support (not available on WIC-1DSU-T1)

• N x 64 kbps or N x 56 kbps nonchannelized data rates (N = 1 to 24)

• Standards-based, including ANSI T1.403 and AT&T Publication 62411

• Full management features:

  • ConfigurationЧCapability for remote configuration using Telnet from the Cisco IOS command line interface (CLI).

  • MonitoringЧRouter and DSU/CSU are manageable as a single Simple Network Management Protocol (SNMP) entity. Extensive DSU/CSU statistics are provided by the Cisco IOS CLI.

  • TroubleshootingЧExtensive loopbacks (including manual button for network line loopback), bit error rate tester (BERT) test patterns, alarm counters, and performance reports, all of which are accessible from Cisco IOS CLI. LEDs for carrier detect, loopback, and alarm functions.

Supported Platforms

The WIC-1DSU-T1 is supported in these Cisco IOSЃ software releases:

Note: The service-module 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.

The WIC-1DSU-T1-V2 is supported in these Cisco IOS software releases:

The Cisco T1 DSU/CSU WIC offers all of the features of the WIC-1DSU-T1 and can be smoothly deployed without any additional training.

Note: Cisco 1701, 1710, 1711, and 1712 are fixed-configuration routers and do not support the WIC-1DSU-T1 or WIC-1DSU-T1-V2. Also, the Cisco 1750 does not support this WIC.

Note: Cisco 1600 and 1600R routers are no longer sold by Cisco Systems.

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. With this WIC card, service-module commands are used. The syntax with regard to the framing, line-code, and so on remains the same. In this scenario a full T1 card with 24 timeslots is used.

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 
pppfair-que
no shut

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Related Information

• 1-Port DSU/CSU T1 WIC for the Cisco 1700, Cisco 2600, Cisco 3600, and Cisco 3700 Series Routers
• Cisco 1600 Series Routers
• Cisco 1700 Series Routers
• Cisco 2600 Series Routers
• Cisco 3600 Series Routers
• Connecting WAN and Voice Interface Cards to a Network
• Technical Support & Documentation - Cisco Systems