[asterisk-users] Grandstream GXP2000 Loses Connectivity

Tue Feb 12 03:29:34 CST 2008

One thing to keep in mind is that the Grandstream's firmware is
notoriously buggy and unreliable.  I've got one GXP2000 here that is on
the 1.1.5.15 firmware, and I wouldn't even consider upgrading other
phones to them.  Unfortunately, the quality of the Grandstream firmware
is appalling and doesn't seem to be getting any better - if anything,
the stability is getting /worse/.

My advise for what it's worth is to use the Grandstream phones to their
best purpose - as a doorstop (albeit for a fairly light door)

Peder @ NetworkOblivion wrote:
> I hate to reply to my own message, but I have some more info from 
> debugging.  A Grandstream tries to register and uses a nonce and it is 
> accepted by *.  The next time it tries to register, it uses the same 
> none and * says "SIP/2.0 401 Unauthorized".  The Grandtream says "ok, 
> here try this new nonce" and then it works again.  Again, the next time 
> it registers, it tries the old one and gets slapped again and gives a 
> new one.  After some indeterminate amount of time, the Grandstream 
> actually tries to use the same nonce 3 times in a row.  Once it works, 
> the next time it gets a "SIP/2.0 401 Unauthorized" and then the third 
> time, it gets a "SIP/2.0 403 Forbidden".  This evidently causes the 
> Grandstream to completely give up registration as once * sends this, the 
> Grandstream nevers tries to register again.  I've waited for 1-2 hours 
> and it never tries again.  The "Forbidden" response appears to kill 
> registration until the Grandstream is rebooted.  Has anybody else seen 
> this?  Or maybe know how to get around it?
>
>
>
> Peder @ NetworkOblivion wrote:
>   
>> 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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>>>>         
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>
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