This is not a problem. Asterisk is under no obligation to offer an audio codec in return.
mario staphorst wrote: > Hi Guys, > > Something I have noticed while dealing with T.38 and re-invites in > Asterisk 1.4.22. > > I have a provider who re-invites with the following sdp (message flow > PROVIDER_EQPMT -> ASTERISK): > > """ > . > v=0. > o=SIP_5F9 123456 654322 IN IP4 CONN_IP_PROVIDER. > s=-. > c=IN IP4 CONN_IP_PROVIDER. > t=0 0. > m=audio 0 RTP/AVP 0. > m=image 26858 udptl t38. > a=T38FaxMaxBuffer:288. > a=T38FaxRateManagement:transferredTCF. > a=T38FaxUdpEC:t38UDPRedundancy. > """ > > The answer coming from asterisk in this case is: > > """ > . > v=0. > o=root 3484 3485 IN IP4 CONN_IP_ASTERISK. > s=session. > c=IN IP4 CONN_IP_ASTERISK. > t=0 0. > m=image 4653 udptl t38. > a=T38FaxVersion:0. > a=T38MaxBitRate:9600. > a=T38FaxRateManagement:transferredTCF. > a=T38FaxMaxBuffer:200. > a=T38FaxMaxDatagram:200. > a=T38FaxUdpEC:t38UDPRedundancy. > """ > > I see a problem here since the number of matched media streams from the > offer does not match with the number of matched media streams in reply > from asterisk (notice the m=audio 0 RTP/AVP 0 not present in the reply). > > Please let me know if there are workarounds on this issue, or if this > could be a bug on asterisk side. > > Best regards, > > Mario Staphorst > > ------------------------------------------------------------------------ > Express yourself instantly with MSN Messenger! MSN Messenger > <http://clk.atdmt.com/AVE/go/onm00200471ave/direct/01/> > > > ------------------------------------------------------------------------ > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users -- Alex Balashov Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671 Mobile : (+1) (678) 237-1775 _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
