Hello Santi,

There is nothing attached and it is not a good practice to have large attachments on the mailing lists (as you are flooding the inboxes). Better uploade your trace on a pastebin like side (or store pcap on ftp/http servers) and just post the link.

Regards,

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

On 22.05.2014 13:28, Santi Antón wrote:
Hello,

I'm trying to implement attendant transfer capability to our Opensips server 
with the b2b module and refer.xml scenario.
Attended transfer works fine except the transferred receives a new call rather 
than update the ongoing call with transferor.
Looking for the cause I saw that from tag is different between the initial call 
(INVITE) to transferred and the from tag in Replaces header (INVITE). I think 
the two from tag have to be the same to consider the second INVITE an update 
and not a new call.
Attached you can find a capture with an isolated example (9443 calls 9441 and 
does an attended transfer to 9442).
Maybe I'm not understanding the module behavior but I couldn't find any clue in 
module's documentation.

Thanks in advance,
Santi Antón























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