[asterisk-users] PRI problems - no D channel

Thu Aug 17 12:47:37 MST 2006

Quoting Bill Gibbs <bgibbs at edurotech.com>:

> 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!
>

Very true that is - I just like to be 1000% certain that I am not 
causing my own
headaches!  Yes, it's a bit time consuming but it tends to save heavily on the
crow when it comes time to figure out where the problem actually lies.  
Plus it
really helps to have all your ducks in a row when dealing with an ILEC - they
just don't seem to have much of a sense of humor about these things.

> -----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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>>>>
>>>>
>>>>
>>>> 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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Ron Gage - Westland MI
ron at rongage.org

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