Configuring T1 Interfaces - Cisco 2620 Configuration Manual

Chapter 3 Configuring with the Command-Line Interface

Configuring T1 Interfaces

Use the following procedure to configure a new T1, CT1/PRI or CT1/PRI-CSU interface or to change
the configuration of an existing interface.
Command
Step 1
Router> enable
Password: password
Router#
Step 2
Router# configure terminal
Enter configuration commands, one per line.
End with CNTL/Z.
Router(config)#
Step 3
Router# ip routing
Router# appletalk routing
Router# ipx routing
Step 4
Router(config)# controller t1 1/0
Step 5
Router(config-controller)# clock source
line
Step 6
Router(config-controller)# framing esf
Step 7
Router(config-controller)# linecode b8zs
Step 8
Router(config-controller)# channel-group 0
timeslots 1,3-5,7
Step 9
Router(config-controller)# interface serial
1/0:0
Step 10
Router(config-if)# ip address 10.1.15.1
255.255.255.0
Step 11
Router(config-if)# appletalk static
cable-range 3-3
Router(config-if)# appletalk zone ZZEth
Router(config-if)# ipx network B005
Step 12
Router(config-if)# exit
Step 13
Router(config)# Ctrl-z
Router#
OL-1957-04
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
Configuring T1 and E1 Interfaces
Purpose
Enter enable mode. Enter the password.
You have entered enable mode when the prompt
changes to .
Router#
Enter global configuration mode. You have
entered global configuration mode when the
prompt changes to
Router(config)#.
Enable routing protocols as required for your
global configuration. This example uses IP
routing, AppleTalk routing, and Internetwork
Packet Exchange (IPX) routing.
Select the CT1/PRI interface to configure. This
example configures a T1 interface in slot 1 and
unit 0.
Specify which end of the circuit provides
clocking. The clock source should be set to use
internal clocking only for testing the network or if
the full T1 line is used as the channel group. Only
one end of the T1 line should be set to internal.
Specify the framing type.
Specify the line code format.
Specify the channel group and time slots to be
mapped. For multiflex trunk interfaces, only
channel 0 can be configured.
Configure each channel group as a virtual serial
interface. Specify the T1 interface, unit number,
and channel group to modify.
Assign an IP address and subnet mask to the
interface.
Configure routing protocols on the interface. You
must have previously enabled these protocols as
part of global configuration. In this example,
AppleTalk and IPX are being configured on the
interface.
Exit back to global configuration mode.
Return to Step 4 if your router has more than one
CT1/PRI interface that you need to configure.
When you finish configuring interfaces, return to
enable mode.
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