Here it is the basic information of VX and elastix(we assume that they are in the same LAN):
Here it is our purpose:
In VX, when we dial any number 7xxx, the call will be transferred to the extension of elastix; when we dial 57+any number, the call will be transferred to elastix, and elastix will route the call out through its trunk.
In elastix, when we dial any number 8xxx, the call will be transferred to the extension of VX; when we dial 56+any number, the all will go out through the first dialing rule of VX.
Firstly let us set the VX:
1. please go to multi-site, and input the related information.
Secondly let us set the elastix:
1. let us create one sip trunk which directs to VX, plesae go to PBX->PBX Configuration->Trunks->Add SIP trunk.
when elastix receives the call from VX IPPBX, the call will use the authority of from-internal.(the call authority of the extension is from-internal too)
2. let us create one outbound route, when we dial 8xxx and 56+any number, the calls will be transferred to VX.
3. let us create another one outbound route, when elastix receives the call starting with 57, elastix will send the call out through its trunk.