[asterisk-users] SNOM Phones Displays NR Frequently

[Rob Hillis]

Chris Bagnall wrote:
>> First things first.  You are running /very/ old versions of firmware -
>> particularly on the 300 and 320.  Upgrade them.  I've been running
>> 7.3.14 for some time without a problem, though it appears that 7.3.23 is
>> now out.
>>     
> I concur about upgrading the software, but I'd stick with 7.3.14 for now - at least until there's more feedback on stability of .23 and .24.
>
> On the OP's original question, I have noticed Snoms (of any version) aren't very good at handling DNS failure - they tend to cache DNS lookup failure almost indefinitely. If DNS lookups to your registrar occasionally fail, you might want to specify registrar via IP rather than by name.
>   
I've never run in to that particular problem myself.  I /do/ have a
Zultys phone here that will try only once to resolve DNS - and wait
forever if it doesn't get a reply.  The Snom never has the same
problem.  (the usual cause for DNS resolution failure is that I've
rebooted the one DNS server on my home network for one reason or another)

I've been running 7.2.23 on my Snom since I sent this original message
and it seems to be fine.  No crashing, no problems with sound quality.