You should probably continue to work with Voipo’s support team to resolve this issue....

The straight to voicemail problem sounds like a firewall issue to me. In other words, the incoming call is being blocked due to the SIP port of your ATA not being kept open on the NAT/firewall attached to the ATA. You indicated you had the HT502 attached this way:

Cable/DSL modem -> ATA (HT502) -> Home router

If so, you need to verify you have no other firewall/ NAT going on within the cable or DSL modem. A lot cable/DSL modems these days are actually combo units (modem + router) instead of simply just a modem. A quick way to check is to simply log into vPanel and click “Connected Devices” (it’s the 12th selection item down in the left blue pane). Take a look at the second row called “Received”, is this field completely blank or does it show ”sip: IP address: port #”. If it’s blank, there’s no firewall/NAT going on in your cable/DSL modem and I would continue to work with Voipo to resolve the problem. If there's an IP address/port number indicated, then you have a firewall/NAT issue you need to resolve in your modem. You will need to log into your modem and disable the routing/firewall functions. I would recommend that you put the modem in “bridge” mode if possible. This will make your modem perform simply as a modem with all other features disabled. If this is not possible to do with your modem, then you might want to have Voipo log into your HT502 and enable the setting “NAT traversal” with no specified STUN server. This will keep the NAT hole open in your modem. Here’s what the HT502 manual says:

“If the NAT Traversal field is set to “Yes” with no specified STUN server, the HT502 will
periodically (every 20 seconds or so) send a blank UDP packet (with no payload data)
to the SIP server to keep the “hole” on the NAT open.”

Hope you get this issue fixed…..

As far as attaching the phone line ports to your home wiring, you do so at your own risk. It’s Voipo’s policy that you not do so and you take full responsibility for damage to the ATA if something happens (REN overload, lightning strikes, etc). I have no idea of the REN ability of HT502 ports, but there have been a couple of other users who have had these ports go bad on the HT502 by connecting it to their home wiring. This particular ATA seems to be more vulnerable than others. You may want to check out this thread:

http://forums.voipo.com/showthread.p...ed-Please-help