[cisco-voip] Crosstalk or Merged VoIP calls

[Mike Neal]

Nope, no QSig. Just standard North American PRI signaling here.

What version CCM were you using?

What were you using for voice mail?

Where there voice gateways involved in your scenario and if so, what model
and IOS version?



Our first thought was this was a typical DSP problem but how could a live
conversation get re-routed from its original router to our VM system and be
merged in to an existing incoming VM call that is being left for a user.
This one will go down in the history books as then one that stumped the
world I think. I can only hope that someone out there has see this and can
point me in the right direction.



Thanks,



>
>  On 7/27/07, Voll, Scott <Scott.Voll at wesd.org > wrote:
> >
> >  I have seen this when we had our CM and old legacy PBX connected.  I
> > always thought it was the PBX screwing something up……….  Are any of the
> > Connections QSig?
> >
> >
> >
> > Scott
> >
> >
> >  ------------------------------
> >
> > *From:* cisco-voip-bounces at puck.nether.net [mailto:
> > cisco-voip-bounces at puck.nether.net] *On Behalf Of *Mike Neal
> > *Sent:* Friday, July 27, 2007 8:16 AM
> > *To:* cisco-voip at puck.nether.net
> > *Subject:* [cisco-voip] Crosstalk or Merged VoIP calls
> >
> >
> >
> > Has anyone seen crosstalk or calls getting merged in a VoIP environment.
> >
> > We run a very large VoIP environment and have seen 3 cases of this.
> >
> >
> >
> > Case #1:
> >
> > Two routers in two different locations.
> >
> > Location 'A' has a user on an IP phone outbound to the PSTN.
> >
> > Location 'B' receives an inbound call that gets forward to our own
> > voicemail system via a Cisco 7610 DPA.
> >
> > Our voicemails are delivered to our email the form of .WAV files.
> >
> > The .WAV file delivered to the user is of the conversation that location
> > 'A' user is having.
> >
> > The .WAV file recorded a portion of their conversation.
> >
> > How is this possible? The two voice streams don't exist on the same
> > routers. How could they and where could they have mixed.
> >
> >
> >
> > Case #2:
> >
> > One router in one location (that we know of..lol).
> >
> > User dials in and this time leaves me a voice mail. The voice mail I get
> > is not what he left but of another live conversation of another party.
> >
> >
> >
> > The only common parties involved here are CCM 4.x cluster, Cisco
> > DPA7610's and our voicemails system.
> >
> >
> >
> > Any help would be appreciated.
> >
> > Cisco is baffled as well.
> >
> >
> >
> > Thanks,
> >
> > Mike
> >
>
>
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