[Serusers] Removing to-tags

[Jason Penton]

Hi All

Is there a way/hack to remove to-tags from incoming '180 
Ringing' responses before forwarding them to the UAC. 

My reason for doing this is that one of the UACs I am using 
seems to screw the to-tag up when SER acts as a forking 
proxy. i.e. the calling UA sends an ACK for the 200OK with 
the to-tag equal to the to-tag received from the FIRST '180 
RINGING' received. The net result is that the ACK is sent 
with a different to-tag than the to-tag of the received 200 
OK. The answering UA therefore does not accept the ACK and 
the call is not completed.
 
Any help/guidance would be much appreciated
 
Jason Penton
Rhodes University
Grahamstown
South Africa