Hi Arnold,

First of all, are you aware that 1.7 is an obsolete version (not maintained anymore)? Have you tried 1.8 (at least) for the b2bua instance ?

Do you have some debug=4 logs? if so, when REFER is handled, could you look for log from "b2b_scenario_parse_uri" saying "URI of type header value" and "URI value = ....." ?

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 04/04/2013 03:04 PM, Arnold Vriezekolk NETZOZEKER B.V. wrote:
Hi Guys,

I currently am trying to get REFER scenarios to work. What i'm experiencing is that the ACK being send from the B2B server after the REFER has multiple '<' and '>' tags in the To header.

The REFER seems to work but the UAc does not receive the final ACK from the B2B server because of the weird TO tag issue.

Currently my setup looks like this:

[Provider] <-> [ B2B opensips ] <-> [ Opensips Proxy ] <-> [UAc]
89.184.172.55 195.60.212.87 195.60.212.90 82.161.133.22

The call goes from the Provider to the Uac. The ACK from the B2B opensips gets to
the Opensips proxy but never to the UAc.

A pcap dump from the "Opensips Proxy" with the double brackets in the ACK packet can be found here:
http://pantoff0l.nl/~tuxx/02-04-2013-ACK.pcap

My refer scenario:
http://pantoff0l.nl/~tuxx/refer.xml

Running OpenSIPS 1.7 from SVN with revision 9796.

If you need any more PCAP dumps, i'd be happy to make and send those.

Best Regards,
Arnold Vriezekolk

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