Hi, On Tue, Mar 2, 2010 at 5:21 AM, Jaikar Nalthooru <[email protected]> wrote: > Thanks a lot Indresh. I mainly looking for Audio paging implementation in > SIP. Our VOIP phones will be installed in Mall and Hospital environments. > There will periodic and emergency announcement to people. While announcement > Phone may be in Idle mode or it may be in active call. But announcement > should get higher priority. In summary, > 1. Phone should attend the call even in idle mode and auto answer is not > enabled. There will not be any attendances. Can we use answer-mode or > prev-answer mode for this?
I've not found a document where this is specified, but I've seen this feature implemented using the Call-Info header like this: Call-Info: sip:192.168.20.1; answer-after=0 However almost every vendor uses a slightly different version of this header :-( Maybe someone else could elaborate a bit more on this :) Regards, -- /Saúl http://saghul.net | http://sipdoc.net _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
