[asterisk-users] Interoffice phone setup

[Darrick Hartman (lists)]

Michael Graves wrote:
> On Mon, 9 Jun 2008 20:32:29 -0400, Matt Watson wrote:
> 
>> On June 9, 2008 07:49:13 pm Joseph L. Casale wrote:
>>>> What type of PBX hardware do you have on-site? Also what make/models of
>>>> phones?
>>> Michael/Darryl,
>>> I do have a local asterisk box, which is why I am baffled. I am new to
>>> Asterisk and there is lots to learn, but my config is pretty basic, my
>>> sip.conf simply has the phones and single sip provider context in it. It
>>> doesn't make sense that the voip provider going offline takes the whole
>>> setup out with it. I am suspecting something else went south at the same
>>> time.
>>>
>>> I have snom m3's and one Astra 480i.
>>>
>>> Thanks!
>>> jlc
>>>
>> I've seen this behaviour from Asterisk as well... while I can't say I have 
>> tracked it down and verified this... I've seen other talks about how Asterisk 
>> gets rather unhappy when it can't preform DNS queries.  I suspect that may be 
>> your problem.   Might want to check the archives for other issues that people 
>> have talked about DNS as a possible cause and see if there are any 
>> similarities.
> 
> Yes, this is very true. Asterisk gets backed up trying to deal with
> lack of DNS.  I'd diable the SIP trunk then restart. Perhaps this would
> permit internal calls to resume, as long as there are no attempts to
> dial external numbers.

dnsmasq is just the creature for the job.  Very flexible and easy to 
configure.

http://www.thekelleys.org.uk/dnsmasq/doc.html

-- 
Darrick Hartman
DJH Solutions, LLC
http://www.djhsolutions.com
http://www.djhsolutions.com/wiki