We have to integrate Siedle axiom telephones to the pbx. to do so, we need to instal a gateway to connect the phones to the pbx. every gateway can connect up to 6 phones. we have 9 so we require 2 gateways.
To be able to connect the gateways to the pbx, we need to configure them as a SIP trunk (only possibility).
When all this is done, we can make internal and outgoing calls. The problem comes when we receive incoming calls. We want that all de devices ring when there is an incoming call, but to do so we should be able to send the incoming call to both the trunks. Has anybody already done something simular?