Understanding the 1-Port 4-Wire 56/64 Kpbs CSU/DSU WAN Interface Card (WIC-1DSU-56K4)

Introduction

The 1-port 4-wire 56/64 kpbs Channel Service Unit/Data Service Unit (CSU/DSU) WAN interface card (WIC) (WIC-1DSU-56K4) is combined within a single WIC and performs the CSU/DSU functions for both DDS (dedicated) and 4-wire switched 56 kbps data networks. It also provides an all rate synchronous interface to any dedicated Digital Data Service (DDS) point-to-point or multi-point network compatible with AT&T Publication 62310. The WIC-1DSU-56K4 also supports 4-wire switched 56 data services such as AT&T's Accunet 56 or Sprint's VPN-56 plus many switched data services offered by local exchange carriers.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

Please refer to the Platform Support section below for detailed information.

The information presented in this document was created from devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If you are working in a live network, ensure that you understand the potential impact of any command before using it.

Conventions

For more information on document conventions, see the Cisco Technical Tips Conventions.

Product Number

WIC-1DSU-56K4 - One Port Four Wire 56/64 Kbps CSU/DSU WAN Interface Card

Features

This list details the features associated with the WIC-1DSU-56K4:

• Implements the switched 56 k and DDS (leased line) operation.

• Identical hardware feature set to the 4-wire 56/64 k CSU/DSU for the 2524-2525.

• Identical Cisco IOS® software configuration.

• Supports the DDS (leased line) operation (AT&T Pub. 62310).

• Supports DDS loop rates 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps.

• Supports the switched 56 operation at 56 kbps (AT&T Pub. 41458, Sprint TS-0046).

• Receiver sensitivity is -45db at all loop rates.

• Uses the Self Test Function (at power on and user initiated) and Network line and data terminal equipment (DTE) loopbacks. User initiated DTE, line, and remote V.54 loopbacks diagnostic functions.

• Compliant with UL 1950, UL 1459, CSA 22.2-950, CSA 22.2-255, FCC part 15J Class A, and FCC part 68.

Platform Support

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

Configuration

The WIC-1DSU-56K4 interface card uses service-module commands. Below is a sample configuration.

Note: There are no framing or linecode commands. This is because the 56 k card is not a T1 and does not relate to timeslots. There are 24 timeslots in a T1: 24 x 64 DS0s=1.544m

This card is strictly 56 k and timeslots are not relevant.

interface serial 0/0
 service-module 56k clock rate 56
 service-module 56k clock source internal
 ip address 10.1.1.1 255.255.255.0
 encapsulation ppp
 no shut

For a list of commands available, refer to Configuring Cisco Integrated Data Service Unit/Channel Service Unit (DSU/CSU) Modules and WAN Interface Cards.

To perform a loopback test refer to Loopback Tests for T1/56 K Lines.

Connector Pinout

The WIC-1DSU-56K4 module uses a standard straight through RJ-45 cable to connect from the RJ-48S jack on the CSU/DSU to the wall jack.

LED Definitions

Related Information

• 1-Port, 4-Wire, 56/64 kbps DSU/CSU WAN Interface Card
• Configuring Cisco Integrated Data Service Unit/Channel Service Unit (DSU/CSU) Modules and WAN Interface Cards
• Overview of Cisco Network Modules and Service Modules for Cisco Access Routers
• Dial and Access Technology Support Page
• Technical Support & Documentation - Cisco Systems