I’m having a hard time getting GXW4108 and the right settings for Vitalpbx 4 to use trunk pjsip with this older SIP gateway. I know I can start with 3 then restore backup. But that just makes a SIP trunk and I really need to move forward with what will be supported. I have several of these GXW4108 anolog sip gateways in use. So if someone can give me some direction I would love that. If not doable can you recommend another piece of hardware that would do the same thing convert from SIP(PJSIP) to anolog.
I have clients with BAD internet in country and so anolog lines work better.
Thanks Greg