Update -- I brought the Obi200 home and connected it to my home network. It works. Calls coming in work - I can hear the caller and the caller can hear me.
So - how is my wife's mini-office network different from my home network?
The setups are somewhat similar.
In both cases, an internet-connected Ethernet cable goes to the "WAN Port" on our router. The Obi200 is plugged into the LAN side of the router.
The routers are different. At home, it's a new Verizon FIOS Quantum G1100 router. My internet speed is typically 700Mbps down and 940Mbps up, with very low latency (3 ms ping) to any nearby test server.
In my wife's mini-office, it's an older Verizon Westell 7500 DSL modem-router that has been switched to "Routed Bridge" or "Routed IP" status. (It does not expect DSL any more.) The internet speed is typically 50Mbps down and 70Mbps up, with even lower latency (1 ms ping) to any nearby test server.
In my wife's mini-office, on this Westell 7500:
- The "Firewall Settings" are set to "No Security (None) - All traffic is allowed."
- QOS is NOT enabled (and has never been enabled)
- On its ALG settings page, FTP, PPTP and IPSec are checked, but H323, TFTP and SIP are NOT checked (always like this).
- For external DNS, it is set to query OpenDNS at 220.127.116.11 or 18.104.22.168
- On its VPN page, PPTP PassThru, L2TP PassThru and IPSec PassThru are all checked. There are no other entries.
- UPNP is enabled.
- This router provides DHCP IP Address Distribution to our computers and devices. When it was last plugged in, the Obi200 was assigned 192.168.0.39. (Private LAN is enabled, and Private LAN DHCP Server is enabled.)
But I don't think any of these settings is a problem. The Obi200 and our Google Voice number worked well in the above setup for almost a year until about two weeks ago!
So - what has changed recently that is somehow an issue in my wife's mini-office? I know that GoogleVoice recently changed its technology, but our Obi200 shows the latest firmware (firmware 3.2.2, Build: 5859EX), and it's working when plugged in at home. So, what's wrong?
Mango - Thanks for suggestion. I will try when I bring it back. Problem then is that all my other devices are no longer connected to the internet, so I can no longer access ObiTalk to see anything.