Devices:
Gateway Mediatrix 4402 with two ISDN lines
FreePBX 2.10.1.2
VoIP phones in the internal network of various kinds, Cisco, Snom, 3CVPhone ...
Required configuration:
FreePBX to make outgoing calls through ISDN lines to which is connected the Mediatrix 4402
FreePBX should receive incoming calls from ISDN lines to which is connected the Mediatrix 4402
I have set up FreePBX through ISDN lines before. I can quickly set up your FreePBX with the different IP phones that you have. Let me know if I may be of service. Thank you.