[asterisk-users] Resolved: PRI problems - no D channel

Ron Gage ron at rongage.org
Thu Aug 17 18:01:13 MST 2006


I wish to thank everyone for their assistance and input into this PRI 
issue I was having.

The problem was the Adtran - one of the PRI channels on it (the one I 
was plugged into - lucky me) went bad.  Moving me to another channel on 
the Adtran fixed the problem.

Thanks again for all your help!

Ron

Bill Gibbs wrote:
> I know but you could save some time and have it tested while
> waiting...they might find a problem and save you a lot of headache.  I
> can tell you are one of the rare people who actually checks their stuff
> before calling anyone but like another posted said, D Channels tend to
> be provider related for some reason!
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Ron Gage
> Sent: Thursday, August 17, 2006 3:29 PM
> To: asterisk-users at lists.digium.com
> Subject: RE: [asterisk-users] PRI problems - no D channel
>
> Quoting Bill Gibbs <bgibbs at edurotech.com>:
>
>   
>> What does the telco say when they test the circuit?
>>
>> Bill
>>
>>     
>
> Bill:
>
> I am having my "remote hands" check first on the Adtran that is feeding
> the
> Asterisk box, then then go upstream from there.
>
> Thanks for helping me see the obvious path to follow!  :)
>
> Ron
>
>
>   
>> -----Original Message-----
>> From: asterisk-users-bounces at lists.digium.com
>> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Ron Gage
>> Sent: Thursday, August 17, 2006 2:32 PM
>> To: asterisk-users at lists.digium.com
>> Subject: Re: [asterisk-users] PRI problems - no D channel
>>
>> Quoting C F <shmaltz at gmail.com>:
>>
>>     
>>> My guess is it's some Intel mobo.
>>> Did you restart the system since? If you did that might be the
>>> problem, try restarting and unplug the power for at least 60 seconds
>>> before powering it back up.
>>>       
>> That was the first thing I tried:  first trying to unload/reload the
>> wct1xxp and
>> zaptel modules, then reload them, then tried rebooting the computer
>> (multiple
>> times), then this morning, I gave it a 30 minute time out.  No effect
>>     
> -
>   
>> still
>> getting the D-chan errors.
>>
>> Unfortunately, the system is some 90 miles north of here so I can't
>> verify if
>> anything on the Adtran has changed or not (or reseat cables).  My
>>     
> remote
>   
>> hands
>> aren't available right now either so I can't verify anything regarding
>> the
>> circuit at this time.
>>
>> The fact that I am not getting any error reports at all about the
>> transport
>> (HDLC type errors) tends to make me think that the circuit is fine.  I
>> would
>> have to imagine that if the channel switched from PRI to T1 it would
>> throw all
>> kinds of errors.  Same thing if the signaling or buildout or what not
>> was
>> incorrect.
>>
>> The only errors I am seeing are the ones about the D channel not being
>> there,
>> and one (probably quite related) about "head of queue has not been
>> transmitted
>> yet".
>>
>> Ron
>>
>>     
>>> On 8/17/06, Ron Gage <ron at rongage.org> wrote:
>>>       
>>>> The PRI is connected at one end to an Adtran Atlas, I believe a 600.
>>>> The other end of the PRI is connected to a Digium T100.  The two are
>>>> seperated
>>>> by roughly 10 foot of cat-5.
>>>>
>>>> Motherboard is whatever Dell put into their Precision 530MT line of
>>>> workstations.
>>>>
>>>>
>>>> Like I said, it worked just fine yesterday and today I am getting
>>>>         
>> D-Channel
>>     
>>>> errors.
>>>>
>>>> Thanks for your assistance!
>>>>
>>>> Ron
>>>>
>>>>
>>>> Quoting C F <shmaltz at gmail.com>:
>>>>
>>>>         
>>>>> What is the PRI connected to:
>>>>> What hardware for the T1?
>>>>> What Motherboard?
>>>>>
>>>>> On 8/17/06, Ron Gage <ron at rongage.org> wrote:
>>>>>           
>>>>>> Hey guys:
>>>>>>
>>>>>> I am having a bit of a problem with our PRI under Asterisk.  I am
>>>>>>             
>>>> seeing the
>>>>         
>>>>>> following error every 10 seconds...
>>>>>>
>>>>>> Aug 17 08:54:55 WARNING[2458]: chan_zap.c:2289 pri_find_dchan: No
>>>>>>             
>>>> D-channels
>>>>         
>>>>>> available!  Using Primary channel 24 as D-channel anyway!
>>>>>>
>>>>>> Of course, I have the d-chan defined in /etc/zaptel.conf...
>>>>>>
>>>>>> loadzone = us
>>>>>> span=1,1,0,esf,b8zs
>>>>>> bchan=1-23
>>>>>> dchan=24
>>>>>>
>>>>>> Neat thing is: this worked yesterday and isn't working today
>>>>>>             
>>>> (Asterisk isn't
>>>>         
>>>>>> answering the PRI on any inbound DID).
>>>>>>
>>>>>> zttool shows no problems with the T100 and no alarm conditions.
>>>>>>             
>>>> The PRI is
>>>>         
>>>>>> being drove by an Adtran Atlas.
>>>>>>
>>>>>> HELP!
>>>>>>
>>>>>>
>>>>>> Ron Gage - Westland MI
>>>>>> ron at rongage.org
>>>>>>
>>>>>>
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>>>>>>             
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>>>>>
>>>>>           
>>>>
>>>> Ron Gage - Westland MI
>>>> ron at rongage.org
>>>>
>>>>
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>>>       
>>
>> Ron Gage - Westland MI
>> ron at rongage.org
>>
>>
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>>     
>
>
>
> Ron Gage - Westland MI
> ron at rongage.org
>
>
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