[cisco-voip] strange t1 issue

Dave Goodwin dave.goodwin at december.net
Wed Feb 25 21:09:01 EST 2015


If you believe D channel is up but B channels are not, what do you see that
makes you think that? If that's really the case, then logging of debug isdn
q921 and debug isdn q931 will usually help with examining what is going on.

-Dave

On Wednesday, February 25, 2015, Anthony Holloway <
avholloway+cisco-voip at gmail.com> wrote:

> What's the output of the following commands:
>
> sh run | in network-clock
> show network-clock
> show isdn status
> show voice-port summary
>
> On Wed, Feb 25, 2015 at 7:16 PM Ryan Huff <ryanhuff at outlook.com
> <javascript:_e(%7B%7D,'cvml','ryanhuff at outlook.com');>> wrote:
>
>> Phillip,
>>
>> The d channel comes up but the b's will not.
>>
>>
>> Thanks,
>>
>> Ryan
>>
>>
>> ------------------------------
>> From: ryanhuff at outlook.com
>> <javascript:_e(%7B%7D,'cvml','ryanhuff at outlook.com');>
>> To: philip.walenta at polycom.com
>> <javascript:_e(%7B%7D,'cvml','philip.walenta at polycom.com');>
>> Date: Wed, 25 Feb 2015 19:39:13 -0500
>> CC: cisco-voip at puck.nether.net
>> <javascript:_e(%7B%7D,'cvml','cisco-voip at puck.nether.net');>
>>
>> Subject: Re: [cisco-voip] strange t1 issue
>>
>> Phillip,
>>
>> T1 0/1/0 is up.
>>   Applique type is Channelized T1
>>   Cablelength is long 0db
>>   Description: ATT SE Circuit 10.IPZX.518281.001.SB 800-247-2020
>>   No alarms detected.
>>   alarm-trigger is not set
>>   Soaking time: 3, Clearance time: 10
>>   AIS State:Clear  LOS State:Clear  LOF State:Clear
>>   Version info FPGA Rev: 08121917, FPGA Type: PRK4
>>   Framing is ESF, Line Code is B8ZS, Clock Source is Line.
>>   CRC Threshold is 320. Reported from firmware  is 320.
>>   Data in current interval (235 seconds elapsed):
>>      0 Line Code Violations, 0 Path Code Violations
>>      0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
>>      0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail
>> Secs
>>   Data in Interval 1:
>>      0 Line Code Violations, 0 Path Code Violations
>>      0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
>>      0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 90 Unavail
>> Secs
>>   Total Data (last 1 15 minute intervals):
>>      0 Line Code Violations, 0 Path Code Violations,
>>      0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
>>      0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 90 Unavail
>> Secs
>>
>> Thanks,
>>
>> Ryan
>>
>> ------------------------------
>> From: Philip.Walenta at Polycom.com
>> To: ryanhuff at outlook.com
>> <javascript:_e(%7B%7D,'cvml','ryanhuff at outlook.com');>
>> CC: cisco-voip at puck.nether.net
>> <javascript:_e(%7B%7D,'cvml','cisco-voip at puck.nether.net');>
>> Date: Wed, 25 Feb 2015 16:25:17 -0800
>> Subject: Re: [cisco-voip] strange t1 issue
>>
>> Do you have the clock sourced to a specific t1?  It sounds like the clock
>> isn't syncing correctly.  What do the t1 counters show?
>>
>> Sent from my iPhone
>>
>> On Feb 25, 2015, at 5:27 PM, Ryan Huff <ryanhuff at outlook.com
>> <javascript:_e(%7B%7D,'cvml','ryanhuff at outlook.com');>> wrote:
>>
>>  Doing a PRI migration from a 2811 vwic2 T1 to a 2911 vwic3 T1
>>
>> I can get the D Channel (Serial 0/1/0:23) to come up but I can't get the
>> B channels to come up. The
>>
>> Only thing in the logs are:
>>
>> %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority
>> 10 to priority 1
>> : %LINK-3-UPDOWN: Interface Serial0/1/0:23, changed state to up
>> : %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from
>> priority 1 to priority 10
>> : %LINK-3-UPDOWN: Interface Serial0/1/0:23, changed state to down
>> : %MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from
>> priority 10 to priority 1
>> : %LINK-3-UPDOWN: Interface Serial0/1/0:23, changed state to up
>>
>> Every so often it repeats. Any ideas
>>
>> thanks,
>>
>> ryan
>>
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>>
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>
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