On 17.08.2009 13:14 Uhr, BERGANZ François wrote: > > Hello, > > > > In a SIP Frame, how to see if it is a T38 frame? > as indication for t38, the sdp in invite should advertise it with a line like: m=image 37532 udptl t38 The big number is the port, so is changing. Cheers, Daniel