Configuring T-CCS

T-CCS uses a dedicated channel for signaling. There are three modes for configuring T-CCS: cross-connect, clear-channel CODEC, and frame forwarding.

T-CCS is supported with VoATM, VoFR, and VoIP. An example using T-CCS is illustrated in Figure 1, with two sites connected via IP and their respective telephone extensions per PBX.

Figure 1: T-CCS Example

Based on the example in Figure1, the following steps are needed to complete a basic T-CCS configuration to the router at the Atlanta location. The Orlando configuration would be very similar and have mirrored dial-peer statements:

1. Configure the T-1 controller:

   router(config)# controller T-1 1/0
   

2. Set the T-1 channels that are used and the signaling associated with each channel:

   router(config-controller)# ds0-group 0 timeslots 1-24 type ext-sig
   

3. Enable the T-1 controller:

   router(config-controller)# no shutdown
   

4. Exit from Controller Configuration mode:

   router(config-controller)# exit
   

5. Set up the local dial peer for the connection to the PBX:

   router(config)# dial-peer voice 4000 pots
   

6. Set up the local destination pattern for the connection to the PBX:

   router(config-dialpeer)# destination-pattern 4…
   

7. Associate the T-1 ds0-group to the dial peer:

   router(config-dialpeer)# port 1/0:0
   

8. Exit dial-peer configuration mode:

   router(config-dialpeer)# exit
   

9. Set up the dial peer for the connection to the remote PBX:

   router(config)# dial-peer voice 5000 voip

10. Set the CODEC complexity to clear channel:

    router(config-dialpeer)# CODEC clear-channel
    

11. Set up the destination-pattern for the connection the remote PBX:

    router(config-dialpeer)# destination-pattern 5…
    

12. Configure the IP session target for the dial peer pointing to the remote router:

    router(config-dialpeer)# session target ipv4:192.168.254.2
    
    

source: http://simple-telecom.blogspot.com/.