Have got the following setup and currently no amount of trickery will allow me to register a "second line" in my SPA2101
TD8840 in Half Bridge mode. LAN IP Address 192.168.1.1
WRT54GL with TomatoUSB. LAN IP 10.0.0.1 with DHCP Disabled (have a SBS server for that)
SPA2102 is attached to the main office switch and has IP Address 10.0.0.2.
Have set the SPA2101 to have both lines enabled and setup with 2Talk. Line1 on SIP port 5060 and Line2 on SIP port 5061.
Also setup the SPA2102 to use stun.2talk.co.nz.
If I place Account1 on Line1 (SIP port 5060) everything registers OK
When I placed Account2 onto Line2 (SIP port 5061), the SPA2101 always shows "Registration State:Failed"
but I have a dialtone from the SPA2102, just cant make or receive calls. THe 2Talk shows the line as "offline".
To make sure it wasnt the account itself, I can register OK with a Softphone on my Laptop using Account2.
Next first thought was faulty cables, but that didnt change anything ... still Line2 offline.
Then I thought faulty port on the SPA2101 ... so changed Line2 to have SIP port 5060 and Line1 to have 5061.
After saving that, I had the other line available ... ie now Account2 was online and Account1 offline.
From my understanding NAT shouldn't be a problem, but it seems to be pointing to that somehow.
To make sure Ive setup Port Forwarding
On Both 5060,5061 10.0.0.2
On Both 10000-20000 10.0.0.2
On Both 16384-32767 10.0.0.2
One thing 2Talk suggest is possibly using Alternate ports for SIP, so I setup Line1 with SIP port 50600 and using proxy 2talk.co.nz:50600 and Line2 using SIP Port 50610 and 2talk.co.nz:50610.
The weird thing was again Account1 worked fine, but the second Line wouldnt register.
What else can I try?