[asterisk-users] vigor 2920 problems

[John Taylor]

Thanks for help- suggestion fixed the issue

John


On 21 November 2011 11:25, John Taylor <john at vetsurgeon.org.uk> wrote:

> Thanks AJ- have set it to 5 mins via telnet: srv dhcp leasetime 600. Will
> get permission to try new firmware later!
>
> JT
>
>
>
>
> On 21 November 2011 10:45, Arthur Stanfield <aj at dmcip.com> wrote:
>
>> Hi John,
>>
>> 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.
>>
>> 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 ftp://ftp.draytek.com/Vigor2920/Firmware/v3.3.7/
>>
>> It may help, It may not - But its quick easy fix if it does.
>>
>> Regards,
>> AJ.
>>
>>
>> ----- Original Message -----
>> From: "John Taylor" <john at vetsurgeon.org.uk>
>> To: "Asterisk Users Mailing List - Non-Commercial Discussion" <
>> asterisk-users at lists.digium.com>
>> Sent: Monday, 21 November, 2011 10:20:14 AM
>> Subject: [asterisk-users] vigor 2920 problems
>>
>> One of our clients has a Draytek Vigor 2920- their natted Snom phones
>> behind it are registered to an Asterisk 1.4 server on an external public
>> IP.
>>
>> I've set QOS, bandwidth management and turned off the SIP ALG via telnet
>> but I'm still having some problems with some of the phones losing
>> registration if Asterisk is restarted.
>>
>> I can see the phones sending SIP REGISTER messages, but they never
>> arrive at the server; this happens in about half of the phones- with no
>> consistency as to which lose registration.
>>
>> It looks like the router is swallowing the messages, or there's some
>> kind of NAT problem. Other clients at other sites are fine.
>>
>> The problem clears if the phone is rebooted (renegotiates a new nat
>> path?)
>>
>> Any help warmly appreciated.
>>
>> John
>>
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>
>
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