[Spce-user] Upper registration to Asterisk - phones unreachable after a while

[John Murray]

Theo,

 

Almost certainly the Snom is trying to be NAT 'helpful' so doing STUN or
some such thing by discovering the NAT external address and including it in
the SIP header. This fools the SPCE into thinking the device is not behind a
NAT device.

Please disable any NAT 'helper' stuff which is usually not helpfull.

 

Regards

 

John

 

From: spce-user-bounces at lists.sipwise.com
[mailto:spce-user-bounces at lists.sipwise.com] On Behalf Of Theo
Sent: 15 February 2013 11:58
To: Daniel Grotti
Cc: spce-user at lists.sipwise.com
Subject: Re: [Spce-user] Upper registration to Asterisk - phones unreachable
after a while

 

HI Daniel

 

SCPE - open internet, no NAT in front, nor any firewall. Device is on a
simple network with a TP-Link router which means it's behind NAT. What could
be the cause of the SCPE not detecting NAT?

On Fri, Feb 15, 2013 at 1:54 PM, Daniel Grotti <dgrotti at sipwise.com> wrote:

Hi Theo,
If SPCE didn't figure out that your client is behind nat, then it won't
perform the nat_sipping.
What are the network of your client,of your NAT device and of your SCPE ?

Daniel






On 02/15/2013 12:37 PM, Theo wrote:

Hi 

 

Nope, the problem persists. Been fine for a couple of hours. Then all of a
sudden - local user offline. Will try 2, 3 times, then the 4th time it's
online again, presumably because a registration came through or
whatever.......

On Fri, Feb 15, 2013 at 10:28 AM, Theo <axessofficetheo at gmail.com> wrote:

Hi Daniel 

 

I have just tried that - let's see if it does the trick. I had assumed that
a new registration attempt every 30 seconds or so would do the trick.
Strange enough, it DOES sent a registration, but the webinterface on sipwise
shows the last registration as 30 minutes ago. It also shows, under active
registrations NAT = no. But the phone is behind NAT - is there a setting
similar to ASTERISK where one specifies that or is it meant to just detect
it?

 

Cheers

 

Theo 

 

On Fri, Feb 15, 2013 at 10:16 AM, Daniel Grotti <dgrotti at sipwise.com> wrote:

Hi, 

if the client is behind nat you can try to set a nat keep alive on the snom.


 

Daniel




Sent from Samsung Mobile 




African Axess African Axess <axessofficetheo at gmail.com> wrote:


Hi 

 

With the help of this list I have upper registration working and can phone
between extensions. However, at (seemingly) random, the devices cannot be
reached. All appears fine and they appear registered, but when I make the
call it doesn't work, until I log into my device and click "re-register".
The proxy log is fairly clear:

 

Feb 15 08:13:22 sipwise /usr/sbin/kamailio[2138]: INFO: <script>: Local user
offline -
R=sip:user404 at my.domain.com:5060;uuid=c6d7434d-5026-4394-86d5-d3c43d2fd2cc

 

telling me that the user is offline. Question of course is - how do I avoid
them going offline. The phones are set to re-register every 60 seconds, but
that doesn't seem to do the trick. Once this happens, only a physical
"re-register" the phone by doing it manually gets it back up again. This is
with SNOM 300 phones.

 

 

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sipwise.com/pipermail/spce-user_lists.sipwise.com/attachments/20130215/c0313b27/attachment-0001.html>