How do I tell how many B channels are available on my PRI line

[pjwhitby]

I used to have a BT PRI line with 8 channels plugged into my CIsco 3640 router. I order an extra 15 lines from BT and would like to confirm that these extra 15 lines have actually been added. What commands from the Cisco 3640 will show me how many available B channels I have on my PRI. The router is running IOS v12.1.3a

Thanks

pjwhitby

 

[nats71]

Use "sh isdn service" command.This will show you the number of channels available and the state they are in.