Cisco Cisco VN 2900 Network Adaptation Interface Installation Guide

This document describes how to connect Cisco T1/E1 high-speed WAN interface cards (HWICs) to a 
network. It contains the following sections:

For an overview of Cisco interface cards used for Cisco Integrated Services Routers see the 

 document.

This section describes T1/E1 HWICs and how to connect them to a network. It contains the following 
subsections:

The 1-port T1/E1 HWIC (HWIC-1T1/E1) includes an integrated data service unit/channel service unit 
(DSU/CSU). The HWIC can be configured for either full T1 services or fractionalized T1 services.

 shows the T1/E1 HWIC LEDs. 

 describes the functions.