Question : Problem: purpose of channel-group in T1 controller configuration

I have 2 aging Cisco MC3810 concentrators. I am trying to reconfigure T1 connectivity on them and running into problem with channel-group statement.

I have a private T1 with both 3810 routers configured in the bridge mode. Here is the part of config file that shows configuration of T1 controller:

controller T1 0
 framing esf
 clock source internal
 linecode b8zs
 channel-group 3 timeslots 7-24 speed 64
 tdm-group 0 timeslots 1-6

When I change channel-group statement to:  "channel-group 3 timeslots 1-24 speed 64" and remove
"tdm-group 0 timeslots 1-6" statement, I loose communication via T1.

I ultimately need to reconfigure the router so I have full T1 for IP traffic. I used to have digital PBX on it and that's why I think there is this separation of timeslots.

Thanks in advance,
Lev

Answer : Problem: purpose of channel-group in T1 controller configuration

You should be able to telnet to the BVI interface....