Cisco T1, E1 Connecting Manual
Overview
Connecting Cisco T1/E1 High-Speed WAN
Interface Cards on Cisco 1861 Integrated
Services Routers
Revised: January 10, 2008, OL-14873-01
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 Cisco
Interface Cards for Cisco Access Routers document.
T1/E1 HWICs
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.
• T1/E1 HWICs, page 1
• Obtaining Documentation and Submitting a Service Request, page 4
• T1/E1 HWIC LEDs, page 1
• Supported Platforms, page 2
• Prerequisites for Connecting a T1/E1 HWIC to a Network, page 2
• Connecting a T1/E1 HWIC to a Network, page 3
T1/E1 HWIC LEDs
Figure 1 shows the T1/E1 HWIC LEDs. Tab l e 1 describes the functions.
Cisco IOS Release 12.5(1)T
1
T1/E1 HWICs
Connecting Cisco T1/E1 High-Speed WAN Interface Cards on Cisco 1861 Integrated Services Routers
Figure 1 HWIC-1T1/E1 Front Panel
3 4
HWIC1T1/E1
CD/LP PO AL
1
1 T1/E1 channelized port 3 Carrier detect/loopback LED
2 Port 0 4 Alarm LED
Table 1 T1/E1 DSU/CSU HWIC LEDs and Loopback Button
Feature Color Description
CD/LP LED Green/Yellow Green—Internal DSU/CSU in the HWIC is communicating with
AL LED Yellow Remote station has an alarm condition.
Supported Platforms
The HWIC-1T1/E1 is supported on the Cisco 1861 integrated services router (ISR).
2
another DSU/CSU. This LED is on during normal operation.
Yellow—Interface card is in loopback mode
Off Normal operation.
Off Normal operation.
232077
Note Use Cisco Feature Navigator to find information about platform support and Cisco IOS software
image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have
an account on Cisco.com. If you do not have an account or have forgotten your username or
password, click Cancel at the login dialog box and follow the instructions that appear.
Prerequisites for Connecting a T1/E1 HWIC to a Network
Before connecting a T1/E1 HWIC to a network, ensure that the HWIC is installed in the router, that the
equipment is properly grounded, and that you have the proper cables for connecting the HWIC to the
network. This section describes the preparation necessary before connecting a T1/E1 HWIC to the
network.
Grounding
Ensure that the equipment you are working with is properly grounded. For instructions on grounding
your HWIC, see Installing Cisco Interface Cards in Cisco Access Routers.
Cisco IOS Release 12.5(1)T
2
Loading...