What is the easiest and most graceful way to disconnect a call on a PRI?

[admin_2]

I have a 4500 router with a PRI card in it. There are about 15 sites that we can call out through the PRI to. If I have a call up, I have been shutting down the D-channel (s0:23) to disconnect the call. However, if there are 2 calls going on at the same time, then using this method, both calls will be disconnected. How can I disconnect a single call on a PRI without shutting the D-channel down?

[#2]

Try "clear int s0:X", where X is the number of the B channel they're on (not 23).