Hasini Gunasinghe wrote: > Hi All, > > In my sip soft phone application, I send DTMF using RFC 2976 (through sip > info message). That works fine and it is related to the SIP stack of our > application. > My questions are: > 1). In implementing the DTMF sending functionality, is it a must that we > provide both implementations as in RFC 2976 and RFC 2833? > I mean...if I only implement RFC 2976, can there be problems when > communicating a server or application who has implemented RFC 2833. > 2). Which method is more preferred in the context of a SIP Soft phone > application? and Why?
In short, the RFC2833 is de-facto standard for the out-of-band DTMF delivery now. Therefore, if your application is expected to interoperate with the third-party SIP/RTP stacks then it's better to support it, as SIP INFO method support across industry is much narrower. Regards, -- Maksym Sobolyev Sippy Software, Inc. Internet Telephony (VoIP) Experts T/F: +1-646-651-1110 Web: http://www.sippysoft.com MSN: sa...@sippysoft.com Skype: SippySoft _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
