[cisco-voip] Weird call in VM..... Explain that?

[Chris Ward (chrward)]

I saw a case like this a long time ago when I was in TAC. Basically, a
customer was reporting that they received VMs of entire conversations,
in my case it was the conversation of a VP within the company, which was
less-than-optimal for the customer.

 

It turned out that when certain devices encounter a TCP connection
failure (unregister) while streaming audio, they would forever stream an
additional audio stream to that IP and port until the device was
cold-rebooted. In this case it was a legacy VM device that DPA that
wasn't filtering out audio streams that were not from the current audio
session and the 7970 the defect that when unregistered, would continue
to send an additional audio stream (CSCsj99361).

 

We were able to finally track down the bug by using CDR records and the
voicemail to determine who's phone we were hearing and then looking for
that phone's calls before the cross-talk was heard.

 

So, let me ask, what are the details of this deployment? Voicemail
system, phones in use, integration type, and versions for all.

 

At any rate, this totally changed my perception that cross-talk is not
possible in an IP environment. J

 

+Chris

Hosted Collaboration Solution TME

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Scott Voll
Sent: Tuesday, December 06, 2011 12:20 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Weird call in VM..... Explain that?

 

We received a VM this morning when checking a branch VM box.

 

Basically the VM sounded like a full conversation between two people
(possible a bank being one side) and the whole conversation is there
including MoH that is not ours either.  we are on the west coast and the
call came in from Kansas.  we see the call in CDR's on CM.

 

What the hey happened?  ideas?

 

Only thing I can guess is that we got conferenced in, incorrectly, or
the telco has some major issues.

 

TIA

 

Scott

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