[cisco-voip] Call terminated while leaving voicemail

[Mike Armstrong]

That's what it looks like to me as well.  The Unity server isn't really all 
that busy, so I can just run the Microsoft Network Monitor with a large 
buffer and hope that I can snag a failed call.  The problem, of course, is 
realizing that a call has failed in time to do something about it.  I'm not 
familiar with the packet structure -- is there any filtering I can apply to 
limit the amount of data collected?

Mike
----- Original Message ----- 
From: "Kevin Thorngren" <kevint at cisco.com>
To: "Mike Armstrong" <mfa at crec.ifas.ufl.edu>
Cc: <cisco-voip at puck.nether.net>
Sent: Wednesday, February 16, 2005 9:13 PM
Subject: Re: [cisco-voip] Call terminated while leaving voicemail


> Hi Mike,
>
> This may be a one way audio issue.  You can try using the AudioStat tool 
> that is in the Tools Depot to log the calls.  It may provide you with a 
> quick reference to find the calls that did not record.  Of course a packet 
> capture of the Unity server when the problem happens will provide a great 
> deal of information.  This will help you to see if the audio is making it 
> to the server to determine if the problem is in the network or with the 
> server itself.
>
> My question about "perceived disconnect" is to get a better understanding 
> of the issue.  Sometimes the users say the call was disconnected but in 
> reality the call is still up but due to what the user experiences the feel 
> the call was disconnected.  This is good to know but is hard to define.
>
> Kevin
>
> On Feb 16, 2005, at 4:21 PM, Mike Armstrong wrote:
>
>> I finally found a credible witness; a summary of everything I know now 
>> is: Unity interrupts the caller with the normal end-of-message prompt 
>> ("To send this messsage, Press 1...").  Pressing 1 results in no message 
>> in the recipient's inbox, so Unity is apparently not seeing any audio. 
>> The CDR shows an origCallTerminationOnBehalfOf code of 12, indicating the 
>> caller hung up.  No error messages appear in any event logs on Unity or 
>> any CallManagers.  This happens with on-net calls.  This also accounts 
>> for several complaints I've gotten saying a caller claimed to have left a 
>> message, but  no message appeared in the client's inbox.  I'm off to TAC, 
>> I think.
>>
>> ----- Original Message ----- From: "Kevin Thorngren" <kevint at cisco.com>
>> To: "Mike Armstrong" <mfa at crec.ifas.ufl.edu>
>> Cc: <cisco-voip at puck.nether.net>
>> Sent: Wednesday, February 16, 2005 7:32 AM
>> Subject: Re: [cisco-voip] Call terminated while leaving voicemail
>>
>>
>>> Hi Mike,
>>>
>>> I just re-read your problem description.  Are you saying that the PSTN 
>>> caller is actually being hung up on by the GW or does the caller 
>>> perceive being disconnected?
>>>
>>> Make sure you look at detailed CCM traces too.  It could have something 
>>> to do with the media negotiation when the call is forwarded to 
>>> voicemail.
>>>
>>> Kevin
>>> On Feb 16, 2005, at 6:01 AM, Mike Armstrong wrote:
>>>
>>>> I had a vague recollection last night that our previous problem was an 
>>>> issue
>>>> with the TSP.  We upgraded Unity to 4.4(4) with CCM 3.3(3), and had to
>>>> revert from 7.0.4 to 7.0.3b.  (Case 600614122, toward the end.)  In 
>>>> that
>>>> case, the failure occured on all calls.  Now it's intermittent.  I'll 
>>>> check
>>>> the logs, and I've enabled tracing, so will wait watchfully and try to
>>>> collect some data.  I think it's TAC-time.
>>>>
>>>> mike
>>>>
>>>> Date: Tue, 15 Feb 2005 19:34:52 -0500
>>>> From: Kevin Thorngren <kevint at cisco.com>
>>>> Subject: Re: [cisco-voip] Call terminated while leaving voicemail
>>>> To: "Mike Armstrong" <mfa at crec.ifas.ufl.edu>
>>>> Cc: cisco-voip at puck.nether.net
>>>> Message-ID: <92CD9289-7FB2-11D9-A952-000A95ACADA8 at cisco.com>
>>>> Content-Type: text/plain; charset=US-ASCII; format=flowed
>>>>
>>>> Hi Mike,
>>>>
>>>> Sounds like this may be a one way audio issue between the GW and Unity.
>>>>
>>>> HTH,
>>>> Kevin
>>>> On Feb 15, 2005, at 5:00 PM, Mike Armstrong wrote:
>>>>
>>>>> Several users are complaining that callers trying to leave voicemail
>>>>> are
>>>>> being disconnected about 5 seconds into leaving the message.  Happens
>>>>> mostly
>>>>> when the call originates out on the PSTN, but one intra-cluster (all
>>>>> LAN)
>>>>> occurence has been reported.  I'm pretty sure I've seen this before,
>>>>> but
>>>>> can't find a specific reference to cause or cure.  Haven't got any
>>>>> trace
>>>>> data yet because the CDR recording state on the Subscriber reverted to
>>>>> False
>>>>> when we upgraded to CCM 4.1(2), but I've shut that barn door so may at
>>>>> least
>>>>> have some data shortly.  In the meantime, if anyone has any thoughts,
>>>>> I'd
>>>>> love to hear them.  CCM 4.1(2), Unity 4.0(4)/Exchange 2003.
>>>>>
>>>>> Mike Armstrong
>>>>> UF/IFAS CREC
>>>>> Lake Alfred, FL
>>>>
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>>