We are using a SIP provider in UK which operates with two different IP addresses.
In the GW/ITSP setup in sipxConfig, we enter their main sip domain, username, password etc. So INVITEs going to this SIP trunk, go out this way. But for incoming calls, the INVITEs come from a different IP address and it seems sipX does not recognize this and the call bypasses sipX bridge. I did not notice any problems with this until a REFER was sent, it should go to sipXBridge, but went straight to the ITSP. The ITSP does support REFER, but the Refer-to of the REFER contained an internal number, which the ITSP does not recognize and replied 404 not found. Any solution to a dual ip-address ITSP? Regards, Sven
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