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- Jan 27, 2010
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Hi,
We've been using a 3CX setup for a while now, suddenly this morning calls stopped working. On investigation it appears the Draytek Vigor 2820 (fw 3.3.5_232201) is to blame. Looks like a UDP packet size issue but it has never been a problem before and no changes were made overnight. Everything has been rebooted and the only thing I can find is a suggestion to UNTICK the "Accept large incoming fragmented UDP or ICMP packets" option - done, rebooted and no change.
As soon as I route the SIP traffic out of the data network (using ZyXEL USG) everything is fine.
Anyone got a suggestion on how to fix this?
Thanks,
Tom
We've been using a 3CX setup for a while now, suddenly this morning calls stopped working. On investigation it appears the Draytek Vigor 2820 (fw 3.3.5_232201) is to blame. Looks like a UDP packet size issue but it has never been a problem before and no changes were made overnight. Everything has been rebooted and the only thing I can find is a suggestion to UNTICK the "Accept large incoming fragmented UDP or ICMP packets" option - done, rebooted and no change.
As soon as I route the SIP traffic out of the data network (using ZyXEL USG) everything is fine.
Anyone got a suggestion on how to fix this?
Thanks,
Tom