Please can anyone offer any insight, or prior experience on this matter.
I have recently transferred my VFX fusion service from a provisioned voice service, to an asterisk server. I have installed and setup Asterisk, with internal extensions. I have registered 2 trunks successfully, and can make, recieve and route calls between Asterisk, internal softphones, a SPA922, and the big bad world.
VFX have kindly sent down a blank config and I am able to configure the settings on the 2 voice lines myself. When I was testing the wag54gp2, i was able to register either of the lines to asterisk, using an the internal proxy address of my Asterisk box, and successfully connect an analogue phone and fax to my internal VOIP network. It seems I am still able to do this when I am not using the router as an ADSL modem.
HOWEVER, when I am using the router as an ADSL modem, I get 'failed' registrations every time. As if it is perhaps looking for the internal ip address (192.168.10.65) on the WAN, not the LAN.
Is there a simple config setting I am missing? I've tried disabling NAT, editing the voice DNS address etc etc. Is there some way of making the wag54gp2's voice hardware default to internal IP addess? is it a firewall issue blocking the asterisk from talking back to the router? Has anyone else successfully done what I'm trying to do.
I have found this forum http://forums.whirlpool.net.au/forum-replies-archive.cfm/510162.html, and some unresolved threads on Geekzone.
I am considering returning the router already, as it won't allow me to assign IP addresses (see http://www.geekzone.co.nz/forums.asp?forumid=65&topicid=24789). But if I can successfully use the phone ports for my internal network, i may keep it.
Or am I just wasting my time with this dodgy hardware, and should I swap it for a solid netgear adsl/wireless/router and get an individual analogue-voip converter for my fax machine.
(on this last point, can anyone recommend a solid VOIP-ANALOGUE converter which with T38 codec support?)