PAP2T loses the connection when the external ip address changes

I have a PAP2T adapter connected behind a Netgear DG834GT router.  Usually, I have no problem, however, my ISP has been known to change the dynamic IP address from time to time.  In this case the adapter will stay online until the reg expires during which he is not able to save the time and I get the error "unable to connect to the server.  Therefore, the only way I can get the adapter to work again is to restart the router, then restart the adapter.  If I reboot the adapter only it will not connect.

I have the router providing a fixed ip address via DHCP. I have active STUN and the I the active NAT and NAT keepalive mapping.  The "reg expires" is set to 60.  When the adapter is connected correctly, it shows the external IP correctly.  However, it will not update after the external ip address change until I have restart the router and adapter.  I thought to get a static IP address, but try to avoid paying for it. Is this a common problem?

I'm rather new to VOIP and I hope I have given you enough information.  Any help would be appreciated.

Thank you

Kirk

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I finally got to work.  It turns out that I had to do an update of the firmware on the router and then place the card in the demilitarized zone.

Tags: VoIP Adapters

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