Hi, When do you mean when you write: >And, if it is not, I believe it should be ignored. Is this correct?
RFC 3264 says that (Note the MUST, MAY and SHOULD): If the ptime attribute is present for a stream, it indicates the desired packetization interval that the offerer would like to receive. The ptime attribute MUST be greater than zero. The answerer MAY include a non-zero ptime attribute for any media stream; this indicates the packetization interval that the answerer would like to receive. *There is no requirement that the packetization interval be the same in each direction for a particular stream.* When sending media, it (i.e answerer) SHOULD use a packetization interval equal to the value of the ptime attribute in the offer, if any was present. >Again if you are not able to serve the requested ptime, you can probably use a lesser packetization interval for sending. I think ptime should always be in multiple of frame size. The offerer SHOULD send media according to the value of any ptime and bandwidth attribute in the answer. Only in *multicast streams* it is necessary that the ptime be same in both directions: The ptime and bandwidth attributes in the answer MUST equal the ones in the offer, if present. If not present, a non-zero ptime MAY be added to the answer. Best Regards Elison _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
