Internet / SIP Failover ?

[uhs-roycruse]

Hi can anyone point me in the direction of information on the best way for SIP Trunk Failover if your primary leased line goes down.

We have Gamma sip trunk and have just ordered their active standby product so that if our main leased line goes down we will have a backup trunk that goes out on an alternate connection. I have setup all my local firewall rules to re route the 3cx pbx out via the new external ip and ive set the External IP config to Dynamic in 3CX Network settings.

However if i try to setup the standby trunk things stop working when i try to add the DIDs presumably as they already exist on the primary trunk.

Any help appreciated... thanks

 

[YiannisH_3CX]

Hello @uhs-roycruse

So you have 2 Gamma SIP trunks, 1 active and 1 passive and 2 internet connections again 1 active and 1 passive correct?

I am not sure how Gammas active/standby product works but if they require the public IP in the VIA header you will to manually adjust that in the standby trunk.
Also do the 2 Gamma trunks have a different registrar IP?

You shouldn't have an issue with outbound calls but for inbound calls to work correctly you will probably need to create a custom template to adjust call source identification.