Hi All, @Jan Many thanks to your answer.
Thanks all for the feedback. @Sampat can you let me know from which reference you have mentioned that it will be treated as Error? Moreover, I am not asking for any Propriety node behavior. I just want to know the communication between the Media Controler and Media Gateway haveing the observed behavior anything relevant standard to answer that the SDP should/must contain the xyz... media attribute. *BR///* *Rakesh Kumar Mohanty* On Sat, Jun 10, 2017 at 12:22 AM, Jan Bollen <jan.bol...@scarlet.be> wrote: > Hi Rakesh, > > Looking at section D.2.3.1 of the ITU_T T.38 standard, I have the > impression that at least the T38Error correction is necessary when udptl as > transport is used, because it is _not_ marked as optional... > > quote: > *UDPTL Options* > *Maximum Buffer Size* > * Att-field=T38FaxMaxBuffer* > * Att-value = 1*(DIGIT)* > * ;optional* > *Maximum Datagram Size* > * Att-field=T38FaxMaxDatagram* > * Att-value = 1*(DIGIT)* > * ;optional* > > > *Error Correction Att-field=T38FaxUdpEC Att-value = t38UDPFEC | > t38UDPRedundancy* > *T38VendorInfo* > * Att-field=T38VendorInfo* > * Att-value = t35country-code SP t35extention SP manufacturer-code* > * t35country-code = 1*(DIGIT)* > * t35extension = 1*(DIGIT)* > * manufacturer-code = 1*(DIGIT)* > *;optional* > * ;0 to 255 for t35country-code and t35extension* > * ;t35country-code is defined in T.35 Annex A.* > * ;t35extension is defined in T.35 Annex B* > * ;The value of "manufacturer-code" is assigned nationally* > unquote > > kind regards, > Jan > > > _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
