[cisco-voip] One-way audio after 2nd transfer

[Voll, Scott]

Either when there is a new feature you want, a vulnerability fix, or a
Bug........ in other words... Often :-) 

Scott

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Mike Armstrong
Sent: Tuesday, March 29, 2005 12:10 PM
To: Carter, Bill; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] One-way audio after 2nd transfer

Doesn't make sense that it should work OK until after the 2nd transfer,
but 
I'll try it.  We're using 12.3(8)T5 now.  How, in general, do you decide

when to upgrade IOS?

mike

----- Original Message ----- 
From: "Carter, Bill" <WCarter at sentinel.com>
To: "Mike Armstrong" <mfa at crec.ifas.ufl.edu>;
<cisco-voip at puck.nether.net>
Sent: Tuesday, March 29, 2005 10:38 AM
Subject: RE: [cisco-voip] One-way audio after 2nd transfer


We just experience a similar one-way audio problem.  Turned out being an
IOS bug.  We also are using H323.  Fixed in 12.3(8)T7

CSCee76615
Externally found severe defect: Duplicate (D)
One way audio: Modem tone detected when no modem used, invalid tone


Release-note:
Symptom:
--------
IOS Gateway running IOS 12.3(7)Tx and 12.3(8)Tx, with DSPware 4.3.16 and

later with NM-HDV/NM-HD-2V/AIM modules may experience one way audio
intermittently.

One way audio problem starts to happen during the duration of the call.
It may continue until the users disconnect the call. At times, one way
audio problem may clear up by itself during the call.

Condition:
-----------
This problem was observed in the following topology,

                                      T1
 Analog/IP Phones ----- IOS Gateway ------- PSTN

In the above topology, the PSTN user may experience no audio problems.
IP Phone user was able to hear the PSTN user through out the entire
duration of the call.


Work-around:
------------
If possible, use IOS 12.3(7)Tx or 12.3(8)Tx running 4.3.15 DSPware.


-----Original Message-----
From: Mike Armstrong [mailto:mfa at crec.ifas.ufl.edu]
Sent: Tuesday, March 29, 2005 9:04 AM
To: medley at mac.com; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] One-way audio after 2nd transfer

I'm going to see if we can repeat it at will, and if we can I'll contact
TAC and see what sort of information they want.  Right now it's a case
of so much to do, so little time..

mike
----- Original Message -----
From: "Tim Medley" <medley at mac.com>
To: "'Mike Armstrong'" <mfa at crec.ifas.ufl.edu>;
<cisco-voip at puck.nether.net>
Sent: Tuesday, March 29, 2005 9:19 AM
Subject: RE: [cisco-voip] One-way audio after 2nd transfer


> Mike,
>
> I was wasn't trying to blame the issue on 4.1(2). A one way audio
problem
> is
> usually related to an issue with NAT or a forewall/acl type blocking.
>
> You may be running into a new bug, I would open a ticket with TAC and
see
> what they say, they will probabally ask you to sniff the network and
see
> what the output shows.
>
> tm
>
> Tim Medley
> http://www.medleylabs.com
>
>
> http://www.sccp2000.com IP Telephony News, Tips and Tricks
>
>
> -----Original Message-----
> From: Mike Armstrong [mailto:mfa at crec.ifas.ufl.edu]
> Sent: Tuesday, March 29, 2005 9:12 AM
> To: medley at mac.com; cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] One-way audio after 2nd transfer
>
> Both are in the same device pool, same VLAN.  Also, this has worked in
the
> recent past, I'm told, so I don't think it can be blamed on 4.1(2),
which
> was installed last year.  However, both ciscocm.4-1-2-sr1 and
> win-OS-Upgrade-K9.2000-2-7sr2 were installed on 3/20 and could be
suspect.
>
> mike
> ----- Original Message ----- 
> From: "Tim Medley" <medley at mac.com>
> To: "'Mike Armstrong'" <mfa at crec.ifas.ufl.edu>;
> <cisco-voip at puck.nether.net>
> Sent: Monday, March 28, 2005 6:47 PM
> Subject: RE: [cisco-voip] One-way audio after 2nd transfer
>
>
>> Is the 7935 in the same device pool as the receptionist 7960? Could
be a
>> codec issue.
>>
>> Are the Gateway and the 7935 separated by a router or firewall? Could
be
>> an
>> ACL, NAT or a Firewall blocking some traffic.
>>
>> tm
>>
>> Tim Medley
>> http://www.medleylabs.com
>>
>>
>> http://www.sccp2000.com IP Telephony News, Tips and Tricks
>>
>>
>> -----Original Message-----
>> From: cisco-voip-bounces at puck.nether.net
>> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Mike
Armstrong
>> Sent: Monday, March 28, 2005 5:42 PM
>> To: cisco-voip at puck.nether.net
>> Subject: [cisco-voip] One-way audio after 2nd transfer
>>
>> Today we experienced a repeatable one-way audio problem:
>>
>> Inbound PSTN call -> PRI -> 3640 H.323 -> CCM 4.1(2)
>>
>> The call went to the receptionist (7960), who transferred it to an
>> administrative assistant (7960), who transferred it to a 7935
conference
>> phone.  At the 7935, only outbound audio worked; no inbound audio was
>> heard.
>>
>> They tried about 4 calls, and rebooted the 7935 once before giving
up,
>> ultimately placing the call from the 7935 to the outside party.
>> Everything
>> went fine from that point.  Is this a known problem to anyone?  I'll
>> start
>> digging into the traces tomorrow, but would wlecome any labor-saving
>> guidance.
>>
>> Mike Armstrong
>> UF/IFAS CREC
>> Lake Alfred, FL
>>
>> _______________________________________________
>> cisco-voip mailing list
>> cisco-voip at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-voip
>>
>>
>
>

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