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Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-03
Chapter 3
Configuring with the Command-Line Interface
Configuring T1 and E1 Interfaces
Configuring TDM Connect (Data Pass-Through)
For multiflex trunk interfaces using the time-division multiplexing (TDM) connect function, you can use
the connect command to connect two groups of DS0 timeslots from two controllers.
To configure TDM connect, complete the following steps in controller configuration mode:
Step 7
Router(config-controller)# channel-group 0
timeslots 1,3-5,7
Specify the channel group and time slots to be
mapped. For multiflex trunk interfaces, only
channel 0 can be configured.
Step 8
Router(config-controller)# interface serial
1/0:0
Configure each channel group as a virtual serial
interface. Specify the E1 interface, unit number,
and channel group to modify.
Step 9
Router(config-if)# ip address 10.1.15.1
255.255.255.0
Assign an IP address and subnet mask to the
interface.
Step 10
Router(config-if)# appletalk static
cable-range 3-3
Router(config-if)# appletalk zone ZZEth
Router(config-if)# ipx network B005
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.
Step 11
Router(config-if)# exit
Exit back to global configuration mode.
Return to Step 4 if your router has more than one
CE1/PRI interface that you need to configure.
Step 12
Router(config)# Ctrl-z
When you finish configuring interfaces, return to
enable mode.
Command
Purpose
Command
Purpose
Step 1
To configure a TDM channel group for T1:
a
Router(config-controller)# tdm-group
tdm-group-no timeslot timeslot-list [type
{e&m | fxs [loop-start | ground-start] |
fxo
[loop-start | ground-start]}]
Configure a TDM channel group for T1. If
configuring cross-connect for data traffic only, do
not specify the type option. The type option only
applies if the mode cas command is enabled.
To configure a TDM channel gorup for E1:
b
Router(config-controller)# tdm-group
tdm-group-no timeslot timeslot-list [type
{e&m | fxs [loop-start | ground-start] |
fxo
[loop-start | ground-start] |
fxs-melcas
| fxo-melcas | e&m-melcas}]
Configure a TDM channel group for E1. The
“melcas” options are supported only on E1 and
apply to the Mercury Exchange Limited (MEL)
Channel Associated Signaling (CAS) standard,
used primarily in the United Kingdom. The MEL
options help preserve CAS integrity on the line. If
configuring cross-connect for data traffic only, do
not specify the type option. The type option only
applies if the mode cas command is enabled.