[SIPForum-techwg] IP PBX section 15

[Francois Audet]

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
> 
> 
> Francois
> 
> 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.
> 
> John
> 
>