Given that all agents are on SIP phones (Cisco 7940), and all outside lines are EuroISDN channels (using a TE405P), is there any way of finding what zap channel is being used by an agent channel within a dialplan ? If you type "show agents" on the CLI you get information like: 6038 (Agent 6038) logged in on SIP/6908-8445 talking to Zap/63-1 (musiconhold is 'default') What I want to get is the "Zap/63-1" information in some form of variable - I want to do this so that I can use ZapBarge on the Zap/63 channel. I want to be able to let a supervisor enter an agent number, for the dialplan to obtain the zap channel of that agent, and then to zap barge it. I know that I can modify the C code to set a channel variable with this info, but would prefer to do this within a dialplan, not by modifying the source. Thanks. Julian