Hello, On 12/19/12 2:28 AM, Raj Roy Ghandhi wrote: the client can do the mixing and act as a conference bridge -- many classic sip phones do 3-way conferencing. You have to update yours if you want the same. There is nothing that has to be in the INVITE, the user will decide when to bridge. Alternative is to use a dedicated software as conference bridge (like asterisk, freeswitch or sems), where each participant has to dial a specific number for the conference room. Cheers, Daniel -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda