Thanks for help- suggestion fixed the issue<br><br>John<br>
<br><br><div class="gmail_quote">On 21 November 2011 11:25, John Taylor <span dir="ltr"><<a href="mailto:john@vetsurgeon.org.uk">john@vetsurgeon.org.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Thanks AJ- have set it to 5 mins via telnet: srv dhcp leasetime 600. Will get permission to try new firmware later!<span class="HOEnZb"><font color="#888888"><br><br>JT</font></span><div class="HOEnZb"><div class="h5"><br>
<br><br><br><div class="gmail_quote">On 21 November 2011 10:45, Arthur Stanfield <span dir="ltr"><<a href="mailto:aj@dmcip.com" target="_blank">aj@dmcip.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi John,<br>
<br>
We've had similiar issues with customers behind the 2920 connecting to a hosted asterisk system. If you rebooted a phone it often didn't re-register, Checking the NAT sessions table on the router revealed stale nat sessions open for the phone.<br>
<br>
On the advice of Dreytek we found a fix by lowering the NAT session timeout from the default of 24hrs down to 5 minutes and installing the latest release of the firmware (3.3.7) it may not be available on the UK Site at the moment (It wasn't when we did the upgrade!) but it can be got from <a href="ftp://ftp.draytek.com/Vigor2920/Firmware/v3.3.7/" target="_blank">ftp://ftp.draytek.com/Vigor2920/Firmware/v3.3.7/</a><br>
<br>
It may help, It may not - But its quick easy fix if it does.<br>
<br>
Regards,<br>
AJ.<br>
<div><div><br>
<br>
----- Original Message -----<br>
From: "John Taylor" <<a href="mailto:john@vetsurgeon.org.uk" target="_blank">john@vetsurgeon.org.uk</a>><br>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" <<a href="mailto:asterisk-users@lists.digium.com" target="_blank">asterisk-users@lists.digium.com</a>><br>
Sent: Monday, 21 November, 2011 10:20:14 AM<br>
Subject: [asterisk-users] vigor 2920 problems<br>
<br>
One of our clients has a Draytek Vigor 2920- their natted Snom phones<br>
behind it are registered to an Asterisk 1.4 server on an external public<br>
IP.<br>
<br>
I've set QOS, bandwidth management and turned off the SIP ALG via telnet<br>
but I'm still having some problems with some of the phones losing<br>
registration if Asterisk is restarted.<br>
<br>
I can see the phones sending SIP REGISTER messages, but they never<br>
arrive at the server; this happens in about half of the phones- with no<br>
consistency as to which lose registration.<br>
<br>
It looks like the router is swallowing the messages, or there's some<br>
kind of NAT problem. Other clients at other sites are fine.<br>
<br>
The problem clears if the phone is rebooted (renegotiates a new nat<br>
path?)<br>
<br>
Any help warmly appreciated.<br>
<br>
John<br>
<br>
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