Thx, this is also my opinion. To point it down: there is no way to use G726 in *any* direction without Re-INVITEs - is this correct?
BR Michael Am 12.03.2010 15:48, schrieb Arunachala: > Not entirely true. A& B can talk using both G729 and PCMA. Either one > can switch between these two codecs without the use of a reINVITE. > > -Arun > > On Fri, Mar 12, 2010 at 7:34 PM, Aneesh Naik<[email protected]> wrote: >> Hi Michael, >> >> This will not be allowed. A (UAC) has sent all the codecs it supports, >> and B (UAS) has respoded with the codecs it is willing to talk to A for this >> call. Only one codec will be negotiated for media transfer between A and B. >> In your example below, the negotiated codec is G.729, so both the parties >> must send media on G.729 codec. >> >> If the codec needs to change it between, then there can be a Re-NVITE to >> change the codec, and both parties once aggreed will start talking on that >> new codec negotiated. >> >> Thanks, >> Aneesh >> On Fri, Mar 12, 2010 at 7:14 PM, Michael Hirschbichler< >> [email protected]> wrote: >> >>> Hi all, >>> >>> In my specific test-case, client A sends an INVITE offering some codecs >>> and client B answers with a 200OK containing a subset of these codecs. >>> Is it allowed for client B to transmit media using a codec presented in >>> the offer of client A but not acknowledged in the answer of client B? >>> >>> e.g.: >>> >>> client A sends: >>> INVITE >>> m= G726, G729, G723, PCMA, PCMU >>> >>> client B responses: >>> 200OK >>> m= G729, PCMA >>> >>> the resulting media-exchange: >>> >>> A====G729====>B >>> A<====G726====B >>> >>> is this allowed? Must A accept the G726-media? >>> >>> BR and thx in advance >>> Michael >>> _______________________________________________ >>> 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 >> > > _______________________________________________ > 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
