Hi, Hope this thread has more info about this topic https://lists.cs.columbia.edu/pipermail/sip-implementors/2008-October/020798.html
Karthik On Tue, Apr 21, 2009 at 7:31 PM, Frank Shearar <[email protected] > wrote: > friend friend wrote: > > Dear Friends, > > In SDP, media (m line) is mandatory? if so, if the UAC doesnt > support video, audio, can the UAC send SDP like m: 0(zero)? > > > > Please clarify. > > > The m header is not mandatory. RFC 4566 section 5 says > > An SDP session description consists of a session-level section > followed by zero or more media-level sections. > > If the UAC supports no kinds of media it'll send no media-level > sections. Not very _useful_, since the UAS must respond with the same > number of media-level sections! > > frank > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
