Channelized T1 Port Adapter Installation and Configuration 27
Configuring 2CT1 Interfaces
Step 10
Use the no shutdown and exit commands respectively to reenable the interface and
return to configuration mode as follows:
Router(config-if)# no shutdown
Router(config-if)# exit
Router(config)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/1/1:23,
changed state to up
%LINK-3-UPDOWN: Interface Serial3/1/1:23, changed state to up
Step 11
After configuring the PRI group and timeslots, map all unused timeslots to an unused
channel group and shut down the unused channel group by entering the channel-group
and shutdown commands, respectively.
Note
Both 2CT1 port adapter interfaces support simultaneous operation in channelized
T1 and ISDN PRI modes.
In the following example, unused timeslots 2, 6, and 8 through 23 are mapped to unused
channel group 2, and channel group 2 is shut down:
Router(config)# controller t1 3/1/1
Router(config-controller)# channel-group 2 timeslots 2,6,8-23
Router(config-controller)#
Router(config-controller)# interface serial 3/1/1:2
Router(config-if)# shutdown
Router(config-if)# exit
Router(config)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/1/1:2,
changed state to down
%LINEPROTO-5-UPDOWN: Interface Serial3/1/1:2, changed state to
administratively down
Step 12
After including all of the configuration commands, to complete the configuration, press
Ctrl-Z (hold down the Control key while you press Z) or enter end to exit configuration
mode and return to the EXEC command interpreter prompt as follows:
Router(config)#
Ctrl-Z
Router#
Step 13
Write the new configuration to memory as follows:
Router# copy running-config startup-config
[OK]
Router#
The system displays an OK message when the configuration is stored.
Step 14
Exit the privileged level and return to the user level by entering disable at the prompt as
follows:
Router# disable
Router>
This completes the procedure for creating a basic channelized T1 ISDN PRI configuration. Proceed
to the “Checking the Configuration” section on page 28 to check the interface configuration using
show commands. For dialer interface configuration and additional channelized T1 ISDN PRI
interface configuration information, refer to the publications Wide-Area Networking Configuration
Guide and Wide-Area Networking Command Reference.
