[Serusers] Problems using REFER method using SER and Cisco gateway

[Richard]

> My question is: is there any way to configure SER changing the REFER
> message in order to "force" the gateway to send the INVITEs through the
> server?
> 
> Or, anyone knows if something more than dial-peers has to be configured
> on Cisco gateways?
> 

The short answer is no. It is not supported by cisco. It is a problem not
limited to cisco. Some other pstn gateways have the same problem.

Here is the official cisco answer, 

Cheers,
Richard


When a REFER is received by the SIP SPI, it passes the refer-to header up 
to the application.  This contains the entire uri of the transfer target. 
The app then extracts the user portion of the uri to get the E.164 
number.  The app expects the user portion of the uri to be an E.164 
number.  If it's not, transfers won't work today. 

It sounds like you are requesting the application to perform some 
additional logic to do a dial-peer match on the domain portion of the 
refer-to URL rather than doing a dial-peer match based on the extracted 
E.164 number.  This would require enhancement to the IOS application 
code.  I'm not sure how involved these changes would need to be - that 
would require more investigation if this enhancement is pursued. 

In addition to the above IOS changes, it would require the user to 
configure a voice class uri and apply this uri to the outgoing dial-peer 
using the 'destination uri' dial-peer config. 
<http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_configurati
on_guide_chapter09186a00801d2ac5.html>