Dialling VoXaLoT to VoXaLoT - Page 2

haceaton · 08-27-2007, 10:48 PM

I've had occasional occurances of inbound service failing while outbound is fine. The remedy has been to reboot the ATA device. I don't know the root of the problem but I wonder if it could be related to the erroneous UDP messages sent to the ATA in order to keep the NAT firewall open.

In my case, I disabled symmetric NAT translation on my voxalot setting (since my ATA is not behind a NAT translation) and the problem has not happened since (about 11 days up-time).

On the other hand I don't see why it should tolerate thousands of the erroneous UDP messages (used to provoke the ATA into a TCP SIP error response to keep the translation open) and then get unhappy with one. Maybe there is a race condition in my ATA's software that gets unlucky once in a while.

cstewart · 08-29-2007, 08:07 AM

I am having similar problems to Kurun which I posted last week on:
http://forum.voxalot.com/voxalot-sup...ing-calls.html

Either calling Voxalot to Voxalot or via PSTN gateway I am currently getting redirected always to the voicemail of the destination account.

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08-27-2007, 10:48 PM	#11
haceaton Junior Member Join Date: Jul 2007 Posts: 19 Thanks: 0 Thanked 5 Times in 4 Posts	I've had occasional occurances of inbound service failing while outbound is fine. The remedy has been to reboot the ATA device. I don't know the root of the problem but I wonder if it could be related to the erroneous UDP messages sent to the ATA in order to keep the NAT firewall open. In my case, I disabled symmetric NAT translation on my voxalot setting (since my ATA is not behind a NAT translation) and the problem has not happened since (about 11 days up-time). On the other hand I don't see why it should tolerate thousands of the erroneous UDP messages (used to provoke the ATA into a TCP SIP error response to keep the translation open) and then get unhappy with one. Maybe there is a race condition in my ATA's software that gets unlucky once in a while.

08-29-2007, 08:07 AM	#12
cstewart Junior Member Join Date: Mar 2007 Location: Bangkok Posts: 9 Thanks: 1 Thanked 5 Times in 1 Posts	I am having similar problems to Kurun which I posted last week on: http://forum.voxalot.com/voxalot-sup...ing-calls.html Either calling Voxalot to Voxalot or via PSTN gateway I am currently getting redirected always to the voicemail of the destination account.