Hi, understand that Asterisk supports a variety of signaling protocols like SIP, IAX2 etc. As a ITSP, which would be the best or most appropiate protocol to use as trunk to wholesale providers? Know that IAX2 can conserve bandwidth, but I believe media and signaling are carried with the same channel/path. That would make off-loading bandwidth utilization for media impossible. Appreciate any input. Thanks. Regards Any Tan -- Andy Tan andytan@fastmail.fm -- http://www.fastmail.fm - Access all of your messages and folders wherever you are