[asterisk-users] Grandstream GXP2000 Loses Connectivity

[Peder @ NetworkOblivion]

I did post most of that.  Point to point T1, no firewalls and no nat, 
cisco routers, bandwidth is monitored at 30 second intervals and never 
exceeds 50%, almost always 25% or less.  The key is that I get messages 
from * like "failed to register" and it is from the IP of the phone, so 
it is like the phone is sending some messed up message.  Asterisk is 
old, 1.0.3, but it has been stable for 2-3 years with zero issues. 
While it could be a asterisk version issue, I have 100-150 phones on it, 
mostly Cisco 7940/7960 and none of them have these issues.  The only 
phones with issues appear to be Grandstream and they are all running 
1.1.5.15.  Here is a sample sip config:

[7834-1]
context=HASKI-LD
type=friend
callerid="HASKI" <7834>
username=7834-1
secret=47834-1
host=dynamic
mailbox=7834 at HASKI-VM
canreinvite=no
qualify=yes

Here is one of the log messages:

Feb 11 18:18:05 NOTICE[20905]: Registration from 
'<sip:7834-1 at 192.168.1.10>' failed for '192.168.2.165'

That message is from a phone that is set to register every 5 minutes. 
It's been 50 minutes and it still hasn't re-registered.  If I reboot the 
phone, it will register right away...

Any ideas?


Peder


Andrew Joakimsen wrote:
> Yes but network issues are still possible. What sort of network
> connections are you using?  What sort of routers/firewalls/other
> network gear? Are you certain of the reliability of the T1? Also you
> did not post what Asterisk version is in use. Please also post the
> relevant sip.conf and configuration file of the phone.
> 
> 
> On Feb 11, 2008 4:52 PM, Peder @ NetworkOblivion
> <peder at networkoblivion.com> wrote:
>> I have 20-30 GXP2000's connected to * over a T1 line.  Neither end is
>> NAT'd and there is plenty of bandwidth available over the line.  The
>> GXP's are 1.1.5.15, which is the latest.  I have a problem where the
>> phones keep dropping off of * and I get a "failed to register" message
>> in the log of *.  Sometimes they eventually connect and sometimes, I
>> have to reboot them to get them to reconnect (I never change the config
>> though).  Has anybody seen this?  I've tried lowering the Register
>> Expiration and that seems to make it worse.  If I lower it to 1 minute
>> or 5 minutes, I lose them every 10-15 minutes.  If I put it at 10
>> minutes, it loses connectivity once or twice a day.  I tried Grandstream
>> support and their answer was completely useless.  Has anybody seen this?
>>   Or does anybody have any ideas?  Again, no NAT involved, so don't say
>> STUN or NAT issue.
>>
>> Peder
>>
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