[SIPForum-techwg] IP PBX section 15
audet at nortel.com
Tue Jan 10 11:42:51 EST 2006
My point is that if you receive 183 (or anything else) without
an SDP, then you can't do inband ringing.
> -----Original Message-----
> From: Elwell, John [mailto:john.elwell at siemens.com]
> Sent: Monday, January 09, 2006 23:52
> To: Audet, Francois [SC100:9T51:EXCH]; SIP Forum Tech WG
> Cc: Chris Sibley
> Subject: RE: [SIPForum-techwg] IP PBX section 15
> You wrote:
> > 15.1
> > There needs to be an explanation that receiving 183 without and SDP
> > should trigger Ringing tone (or in fact, any 18X without SDP).
> First, 180 should lead to ringback tone, but I don't think
> any other 18x should. Secondly, this should be independent of
> whether there is SDP present. It should, of course, be
> dependent on whether RTP/SRTP is being received.
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