From: varun <[EMAIL PROTECTED]> 1> In what cases should 180 be definitely be send as a response.A 180 response can actually contain the SDP info.Assuming that reliability PRACK for provisional responses is implemented, can a two way audio session be established before the caller has got a 200 OK.
2>Also, 183 is basically used when the call goes across different networks.Why can't simply 180 be used.. How are 180 and 183 different from each other? The important difference is that 180 asserts that alerting has started at the UAS. 183 indicates that the call is being processed (by some entity), but does not imply that a destiantion is being alerted. 3>coming to early media, once the caller has send an invite it is ready to receive media( you can play announcements to the caller), what has 183 got to do with early media? "once the caller sent an INVITE containing SDP" (it is possible to send an INVITE without SDP.) _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
