Configuring E1 and T1 Interfaces
When you set up an E1- or T1-carrier line, you must configure the Physical
Layer and the Data Link Layer. This section explains how to configure the
Physical Layer—the E1 or T1 interface—if you have purchased:
an E1 module that includes a built-in Digital Service Unit (DSU)
a T1 module that includes a built-in Channel Service Unit (CSU)/DSU
If your public carrier provides an external CSU/DSU, see "Configuring a Serial
Interface for an E1- or T1-Carrier Line" on page 14-44.
When you configure the E1 or T1 interface, you must configure the same
settings that your public carrier's equipment uses. If you need additional
information about any of the options, see Chapter 4: Configuring E1 and T1
Interfaces.
1.
In the left navigation bar of the Web browser interface, select Physical
Interfaces. The interfaces for all of the modules installed in the router are
listed on the Physical Interfaces window.
Figure 14-29.Physical Interfaces Window
2.
Select the E1 or T1 interface that you want to configure. The Configura-
tion for the <interface> <slot>/<port> window is displayed.
Using the Web Browser Interface for Basic Configuration Tasks
Configuring E1 and T1 Interfaces
14-39