[Serusers] Handling of REFER messages

[Evan Borgstrom]

Miroslaw,

	The easiest solution to this would be to place SER in between the 
Nortel switch and the Asterisk box and have the switch & Asterisk use 
the SER instance as their "default route" for all messages.

	The SER instance should be fairly simple in your case as all messages 
from the Nortel switch should be routed to the Asterisk box and 
vice-versa (your could do this by inspecting the source IPs) but it 
would give you the ability to inspect message methods and bodies before 
they are delivered and respond to either side accordingly or just 
forward them to the opposite side.

-Evan

Miroslaw Nawrot wrote:
> Hi, I am trying to do a peculiar task and I want to find out if SER can 
> do it. The issue is with call transfers which generate the REFER 
> message. I am connecting a Nortel voip switch to Asterisk via sip. I 
> need to have all call transfers generated by the Nortel switch to not 
> reach Asterisk as all the call transfers are done to dids/extensions not 
> found on the Asterisk PBX. Instead I would like to intercept / re-route 
> them back to my Nortel switch which can handle it. Currently I have a 
> workaround using an Audiocodes gateway with loopback cables. The 
> Audiocodes when sees the transfer request sends it back to the Nortel 
> switch. As this is a wasteful use of expensive hardware I would like to 
> find another method to do this. Can someone let me know if this is 
> possible with SER? And if it is which functions do I use? Any help is 
> greatly appreciated.
> 
> Mirek
> 
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