I’m migrating my small office (10 phones) off an old Cisco POTS IP-PBX to FreePBX and trying out Nexmo elastic trunking.
I’m trying to configure an Edgemarc 2900 SBC, but I’m finding the interface a little esoteric. Things like blacklisting/whitelisting, firewall rules, DMZ, aren’t configured in any way I’m familiar with. As of now, I have the ALG turned off. I can register with the provider and make outgoing calls with two way audio. I cannot call in. When I call in I just get silence for a while before the call terminates. Looking at the asterisk console (asterisk -vvvvvr), nothing is coming into the PBX which makes sense since I haven’t told the router to send it anything.
When I try to configure the ALG using Edgewater’s guide which seems to be their recommended way, I lose registration. I’ve been tinkering for a while, but can’t figure it out. Am I correct that my three options are, setting up the ALG, putting the PBX in a DMZ, or port forwarding?
Any guidance would be greatly appreciated. Thank you.