[cisco-voip] Odd one-way/no audio issues with just one user

[Erick B.]

No custom DSP ware on flash. Yes, the DSP Firmware was updated with the IOS
update I did earlier which fixed some duplicate DTMF issues. Unfortunately
can't go past 15T without getting more memory in the router. I've thought
about it, replacing PVDM but they have calls come in other GW at other
location to same person that have same problem occasionally so the problem
calls aren't isolated to particular gateway.

Jason, everything is on same subnet voice wise and no devices inline/etc
inspecting traffic. GW---Cat4500---3750--phones. Servers are plugged into
4500. Checked out the network connections hop by hop, no errors, proper QoS
markings and trusts occurring, nothing out of ordinary. No visible errors
in logs, counters all look fine, etc.

Wes, the payload on the problem call starts with fe then goes to ff, then
7e.   SR 627142541 has the pcap.


On Tue, Sep 17, 2013 at 10:40 PM, Justin Steinberg <jsteinberg at gmail.com>wrote:

> can you try to have the operator place the call on hold and then resume to
> see if that fixes the problem ?   Also, I am thinking maybe you want to try
> and upgrade the IOS to something newer than 12.4.15T.    Are you sure there
> isn't any custom DSP firmware on the router that negated your IOS upgrade
> effort to fix the problem ?
>
>
> On Tue, Sep 17, 2013 at 8:52 PM, Erick <erickbee at gmail.com> wrote:
>
>> The other odd thing, on some of the problem calls, the operator asks
>> outside caller to press 0 then two way audio starts on the same call. Only
>> a small % of calls this happens on.
>>
>>
>> Sent from my iPhone
>>
>> On Sep 17, 2013, at 7:01 PM, Erick <erickbee at gmail.com> wrote:
>>
>> I'll take a closer look at the capture.
>>
>> Silence suppression is off.
>>
>> Ruled out headset. User tried handset and speaker On same call - speaker
>> was selected on phone.
>>
>> Phone and headset have been replaced.
>>
>> We had pc plugged into phone but now nothing is, moved pc to separate
>> jack.
>>
>> Phones, gateway, ccm servers, unity all
>> in same vlan / subnet. Only 250 Mac addresses in cucm arp table.
>>
>> Operator is using attendant console... I asked they reinstall it or stop
>> using it for a day or two in case it is interfering.
>>
>> Sent from my iPhone
>>
>> On Sep 17, 2013, at 6:42 PM, "Wes Sisk (wsisk)" <wsisk at cisco.com> wrote:
>>
>>  "A packet capture from the phone shows the RTP stream with no audio."
>>
>>  Can you clarify? Payload is 7F or FF (silence) or is the sound payload
>> completely missing? Ala sound suppression on.
>>
>>  Any headsets in play? Headset selection? We've tracked several of these
>> to contact center agents using headset button to answer/disconnect calls
>> and inadvertently redirecting their audio channel.
>>
>>  -Wes
>>
>>  ------------------------------
>> *From:* cisco-voip [cisco-voip-bounces at puck.nether.net] on behalf of
>> Erick B. [erickbee at gmail.com]
>> *Sent:* Tuesday, September 17, 2013 2:45 PM
>> *To:* Ryan Ratliff (rratliff)
>> *Cc:* voip puck
>> *Subject:* Re: [cisco-voip] Odd one-way/no audio issues with just one
>> user
>>
>>   A packet capture from the phone shows the RTP stream with no audio.
>> The operator gets calls from all locations though so the problem calls come
>> in multiple PRIs and not just one so can't pinpoint it to a particular
>> gateway / PRI issue. A majority of the calls do come in the same gateway
>> though and the PRI is clean (no errors). Let me look through the CMR
>> records for some problem calls. I do have a TAC case on this also. Just
>> looking for some more ideas as I've tried almost everything and this is
>> pretty odd.
>>
>>
>> On Tue, Sep 17, 2013 at 1:09 PM, Ryan Ratliff (rratliff) <
>> rratliff at cisco.com> wrote:
>>
>>> What do the CMR records say about those calls?
>>>
>>> -Ryan
>>>
>>> On Sep 17, 2013, at 12:51 PM, Erick B. <erickbee at gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> Anyone have any ideas on this?
>>>
>>> Older system, CUCM 6.1.1a (no SUs) that has been running fine for years
>>> and past 2-3 months only one user is having problems with no audio or one
>>> way audio on calls. The IP Phone user can't hear the outside caller.
>>> External calls have issue mostly. Problem happens 1-2 times a day.
>>>
>>> We have replaced the 7962 phone, headset, put it in another switch port.
>>> Updated firmware to 8.5.2 (latest compatibile with 6.1 per docs). I have
>>> updated the IOS on the MGCP voice gateway from 12.4(15)T4 to 12.4(15)T17
>>> and that fixed a duplicate DTMF issue (user was hearing DTMF tones on some
>>> calls) and also seemed to help the problem calls as there are less since
>>> the IOS upgrade but still 2-3 a day compared to a dozen or so before the
>>> IOS upgrade.
>>>
>>> I haven't been able to duplicate the issue with several hundred calls
>>> in, it is very sporadic.
>>>
>>> I know the CCM version is old, thinking about applying latest SUs for
>>> 6.1 until the client can update to newer hardware. Just strange only one
>>> user having this problem. We checked around several times.
>>>  _______________________________________________
>>> cisco-voip mailing list
>>> cisco-voip at puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/cisco-voip
>>>
>>>
>>
>> _______________________________________________
>> cisco-voip mailing list
>> cisco-voip at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-voip
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20130918/344d76aa/attachment.html>