Network setup with two SIP trunks

@jon_b wrote:

Hi,

I have a problem setting up two SIP trunks on FPBX,

FFPBX is 6.12.65-27
Asterisk is 11.17.1
Running on an HP NUC with a single NIC

The NUC connects to a Mikrotik switch which routes the existing SIP trunk traffic on VLan 10 to Telco 1's private gateway and all other traffic on the native VLan is routed to the normal Internet gateway router.
The Private address range and the normal LAN address range are different and neither are able to be changed.

So far no problem.

It has been decided that we will provision an additional SIP trunk onto the system which will connect to Telco 2 via the Internet.

The system uses Chan_SIP and the normal Internet Public IP address is entered under SIP Settings with an address on the VLan 10 network in the CHAN_SIP "Over-ride External IP" box

After connecting Telco 2's trunk, i can see correctly addressed SIP OPTIONS, INVITES and BYE's being passed between FPBX and Telco 2, but the RTP packets are showing as originating from the address in the SIP Settings/Chan_SIP/Over-ride External IP field.

Is there a way to configure an additional "over-ride" address for the second {Telco 2} RTP packets ?

I see that Telco 2 does support IAX2 trunking as well as SIP Peering if that is helpful

Thanks

Jon

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