Anveo E911 problems
since83:
I use a Cisco/Linksys E3000 router (simultaneous dual band). You are second person to mention a NAT issue. What is best way to restore correct NAT tables? I tried updating the router firmware, but the issue does not go away. Again though, the service works on the 5061 port number.
Also, what advantage does enabling the Proxy Server Redundancy have over changing the port number? I take it the setting is found under Service Providers, ITSP Profile B SIP.
Mango:
X_ProxyServerRedundancy will (hopefully) cause the OBi to try another one of Anveo's PoPs, should this issue recur. (They have several.) If my guess is correct, this will have the same effect as changing the port number (new NAT mapping will be created), but it will happen automatically without you having to change settings.
You've probably already checked this, but just in case, make sure your E3000 receives a public IP address from your ISP. If your modem is also acting as a router, you have a "double NAT" situation which makes this problem much more tricky to troubleshoot. In this case, I would place the modem in bridge mode and let the E3000 do the LAN routing.
Alternate solutions which might work:
1) Increase your OBi's RegisterRetryInterval so that your router's corrupted NAT connection expires, and a new one can be created. A quick Google search for "cisco e3000 udp timeout" did not produce any relevant results, so the number to use will be a guessing game. If the problem comes back, you could try to unplug the network cable from your OBi for five minutes, then plug it back in. If it doesn't register, then try to unplug the network cable for ten minutes. Keep going up in increments of five minutes. If for example it registers after being unplugged for fifteen minutes, you can set RegisterRetryInterval to 960.
2) Your router is compatible with Tomato firmware which does not have this issue (any more). So, if you don't get things working with the stock Linksys firmware, that is an option. If you do this, let me know so I can give you some pointers about configuring timeouts.
since83:
Mango,
I can confirm your proxy server redundancy setting also works. Even more interesting though, if I turn that setting off again, the E911 service still works, even under the original (obitalk standard) port setting! So now I am back to all obitalk default settings and everything seems to be working fine again. Very odd....
BTW: My modem (Motorola surfboard 6020) cannot perform as a router so all NAT is in my E3000 router.
Mango:
That sounds reasonable. The old (corrupted) NAT connection must have expired, so now the old port works again.
SteveInWA:
See: http://www.obitalk.com/forum/index.php?topic=5762.msg36962#msg36962
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