[SIPForum-discussion] 180 ringing there is no SDP . so how weare able to listen the ring tone.(ringing).

[Srinivas .]

1XX is optional, even if 1XX is not received call won't fail.

 

 

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Naveen Gujje
Sent: Thursday, April 26, 2007 1:24 PM
To: Saumil Jhaveri
Cc: discussion at sipforum.org
Subject: Re: [SIPForum-discussion] 180 ringing there is no SDP . so how
weare able to listen the ring tone.(ringing).

 

does a call fail if 180 packet is dropped in the router? Are 100 & 180
essential in the 3-way handshake of Invite - 200oK - Ack

On 4/25/07, Saumil Jhaveri <saumil.jhaveri at yahoo.com> wrote:

if 180 ringing message arrives to the GWC, then GWC can insert a MAS to
play the audible ringback.

Shiying Li < jackstraw.lee at gmail.com <mailto:jackstraw.lee at gmail.com> >
wrote:

	Ringing is the default action as soon as it receive a 180
message for the INVITE which is sent by itself. 
	
	 

	On 21 Apr 2007 04:22:04 -0000, mwilliam prusty <
callwilliam90653 at rediffmail.com <mailto:callwilliam90653 at rediffmail.com>
> wrote: 

	  
	in the 180 ringing there is no SDP i.e no media information. .
so how we are able to listen the ring tone.(ringing). 
	
	
	
	plz answer 

	 

2007-1-R-N-0083
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ature-home.htm/1050715198 at Middle5/1166323_1160412/1165498/1?PARTNER=3&OA
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________________________________

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________________________________

Ahhh...imagining that irresistible "new car" smell?
Check out new cars at Yahoo! Autos.
<http://us.rd.yahoo.com/evt=48245/*http:/autos.yahoo.com/new_cars.html;_
ylc=X3oDMTE1YW1jcXJ2BF9TAzk3MTA3MDc2BHNlYwNtYWlsdGFncwRzbGsDbmV3LWNhcnM-
>  


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