[Serusers] SIP Diversion INVITE Messages

[Jan Janak]

Check out:

http://cvs.berlios.de/cgi-bin/viewcvs.cgi/ser/sip_router/etc/nathelper.cfg?rev=1.1&only_with_tag=MAIN&content-type=text/vnd.viewcvs-markup

look for the part beginning with onreply_route[1], this is the part that
rewrites 200 OK reponses.

Ser is instructed to use the onreply part by using t_on_reply("1") in
route[1] section.

  Jan.

On 24-11 16:50, Stephen Miles wrote:
> Hi all,
> 
> We have successfully managed to get Ser to act as a proxy between our 
> backend SIP service and clients out on the Internet using the nathelper 
> modules and RTP proxying.  However, one of the features of our SIP 
> service allows you to dial a number via a web interface.  This appears 
> to work by sending an INVITE from the SIP service out to the IP phone 
> using the 'Diversion' and follow-me directives.  The problem we appear 
> to be having is that the RTP information is setup not in the INVITE but 
> rather in an OK status message returned when we pick up the phone to 
> dial out.  From what I understand Ser does not look inside Status 
> messages but only in the initial INVITE, hence when we use the web 
> interface to dial out the SDP location is not being altered to point at 
> our Ser proxy and therefore the RTP is not being proxied as we want.
> 
> We have tried various things but the issue appears to be that Ser will 
> not look inside OK replies to INVITE's. We might be misunderstanding 
> things here???  By the way all SIP messages are going through the proxy 
> as desired... The only issue we have is with the RTP traffic.
> 
> Can anybody help us understand how to get around this problem (if in 
> fact it is possible to get around it using Ser)
> 
> Cheers,
> 
> Steve
> 
> 
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