On 01.02.2010 03:53, 이성우 wrote: > Dear all, > > What do you think the best current practices for implementing auto-answer? I > think different vendors are using each different ways to do that. Among them, > I found following three are most common (I may be wrong). > > 1. Call-Info: answer-after=0 > 2. Alert-Info: info=alert-autoanswer > 3. Notify Event: talk
You are right in that different vendors are using different ways to signal auto-answer: Polycom - Alert-Info: Auto Answer (note that Polycom is case sensitive for "Alert-Info" attribute) Aastra 5xi - Alert-Info: info=alert-autoanswer (These are conflicting, as Alert-Info is defined as non-multiple and non-structured header) Linksys - Call-Info: =\;answer-after=0 So your safest bet would be to send both: Alert-Info: Auto Answer Call-Info: =\;answer-after=0 Of course YMMV may vary depending on what equipment you are planning to use. > So, where would you vote for based on RFCs? If any different idea, please let > me know. I'm not aware of any standards or drafts that describe the above variants. And RFC 5373 defines yet another special header Answer-Mode. -- Sincerely, Andrew Pogrebennyk _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
