[Serusers] SIPPS UA

Jan Janak jan at iptel.org
Wed Aug 13 12:11:22 CEST 2003


Yes, Klaus is right. INVITE after digest challenge must not contain To
tag, it is a completely different request -- there is not dialog yet.
 
 Jan.

On 13-08 01:13, Klaus Darilion wrote:
> The gateway receives an INVITE with a tag in the "To:" header, but can't find an existing dialog (=call-id + to-tag + from tag) to this INVITE. The gateway doen't treat the INVITE as the beginning of a new dialog, because the TO-tag is already present.
> 
> I think SIPPS should not use the to-tag recevied by ser in the second INVITE, as a 4xx respond does not create a dialog.
> 
> regards,
> Klaus
> 
> 
> -----Original Message-----
> From:	Greg Fausak [mailto:greg at august.net]
> Sent:	Tue 12.08.2003 22:33
> To:	'SER Users'
> Cc:	sip at addaline.com
> Subject:	[Serusers] SIPPS UA
> I've been trying to get the SIPPS UA working with
> My addaline.com setup.  I keep getting the error:
> SIP/2.0 481 Call Leg/Transaction Does Not Exist.
> 
> No matter what the far end is.  I am able to call this UA from anywhere
> After it registers.  Anybody have any ideas?
> 
> Here is the an example call flow:
> 
> http://www.addaline.com/traces/sipp_index.html
> 
> The only thing I notice that is weird is the 'Route' in the
> F4 packet.
> 
> ---greg
> Greg Fausak
> 
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