Current setup: 2 servers;
Server A:
-has inbound and outbound SIP trunks for incoming and outgoing calls and works perfectly
-has Diginum PRI T1 card and configured and working 24 chan zap trunk for inbound / outbound
-is peered correctly to server B using dundi
-allows inbound calls to be passed out dundi so server B can answer a call that came in over the PRI
Server B:
-has inbound and outbound SIP trunks for incoming and outgoing calls and works perfectly
-is peered correctly to server A using dundi and accepts matching call’s passed to it over dundi
New Objective:
Server A has outbound fail over as it primary uses the sip outbound trunk for outbound calls but will fail over to the PRI (Zap) if needed.
I would like to add a similar fail over to Sever B, meaning I would like to share the zap trunk in server A such that when an out bound call on server B is made and the sip trunk it has for outbound fails that the call will go out over dundi and out the PRI.
How do I share the zap outbound trunk?