From: Tarun Pahuja (pahujat@gmail.com)
Date: Sat Dec 29 2007 - 18:34:05 ART
Joseph,
Conferencing problem are usually not very complicated to
troubleshoot. Once you start understanding the traces in CCM,
troubleshooting becomes an open book. In your case probably what was
happening was that your dial-peer was defaulting to G.729 codec which is the
default for voip dialpeers and the phone or phones were probably in a region
that could only speak G.711. This is the most common mistake people make
when configuring the callmanager the first time. Simple add codec class on
the gateway to give voip dialpeer a preference list which says that if the
gateway is unable to negociate at G.729(default) it would fall back to G.711.
Cisco Phones by default support G.729/G.711.
Voice track is one of the most interesting track!!
HTH,
Tarun
On Dec 29, 2007 4:26 PM, Joseph Brunner <joe@affirmedsystems.com> wrote:
> Thanks for the great explanation. We had an issue with no one being able
> to conference call anyone. It would just drop. Tac had me poke around in
> ccm, but someone at the site told me about the dial peers defaulting to the
> wrong codec, so we changed that and it fixed it. Gosh, why did Cisco make
> the product this complicated? To have a hard voice lab, OF COURSE!
>
>
>
> (I'm doing voice after the security track)
>
>
>
> J
>
>
> ------------------------------
>
> *From:* Tarun Pahuja [mailto:pahujat@gmail.com]
> *Sent:* Saturday, December 29, 2007 2:42 PM
> *To:* Joseph Brunner
> *Cc:* Godswill Oletu; Mark Snow; Cisco certification
>
> *Subject:* Re: CME Phone Calling CallManager DN with Partition?
>
>
>
> Joseph,
>
> When you are confused about Partitions and Calling search space
> issues. Think about Access-list. Just like in an access-list you have
> subnets that you allow or disallow. Similarly in Callmanager you have
> CSS(Access-list) and Partitions(Subnets).
>
>
>
> When you pick up the phone and dial, the callmanager looks at the CSS of
> your phone/Line and sees what partitions your phone has access to just like
> an access-list would check what subnets you can get access to. When you run
> into issues where you can not call a DN, I would recommend that you download
> the dial Analyser from CallManager built in tools. It will tell you exactly
> where the problem is and if it is CSS issue or dialplan issue.
>
>
>
> In your case, since the call is coming from external gateway, I would run
> a debug on the CME to see why the call is failing. Is it codec mismatch or a
> CSS issue.
>
>
>
> The trick to passing the Voice Lab is to keep things simple!
>
> HTH,
>
> Tarun
>
> On Dec 26, 2007 8:55 PM, Joseph Brunner <joe@affirmedsystems.com> wrote:
>
> What's the codec settings on the dial peer on the cme router?
> The default dial peer?
>
> Joe
> 800-lb gorilla, #19366
>
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Godswill Oletu
> Sent: Wednesday, December 26, 2007 8:40 PM
> To: Mark Snow
> Cc: Cisco certification
> Subject: Re: CME Phone Calling CallManager DN with Partition?
>
> Hi Mark,
>
> It is not work out; I applied the CSS to the H323 gateway, also to the
> device and also to the DN.
>
> The CallManager DN & the route pattern have the same partition. I also
> reset
>
> the gateway after, but no luck.
>
> Godswill Oletu
> CCIE #16464 (R&S)
>
>
> ----- Original Message -----
> From: "Mark Snow" <msnow@ipexpert.com>
> To: "Godswill Oletu" <oletu@inbox.lv>
> Cc: "Cisco certification" < ccielab@groupstudy.com>
> Sent: Wednesday, December 26, 2007 8:04 PM
> Subject: Re: CME Phone Calling CallManager DN with Partition?
>
>
> > On your H323 GW page you need to change the Calling Search Space for
> > inbound calls to something that contains the Partition of 6xxx.
> >
> > Change that and report back.
> >
> > Mark Snow
> > Sr Technical Instructor
> > IPexpert, Inc.
> >
> > Sent from my iPhone
> >
> > On Dec 26, 2007, at 5:49 PM, Godswill Oletu <oletu@inbox.lv> wrote:
> >
> >> I have been battling with this for sometime now.
> >>
> >> My CME gateway is registed with the CallManager via H323, the dial
> >> pattern on the CallManager pointing to the CME gateway is using a
> route
> >> list, then a route group that contain the CME gateway.
> >>
> >> I have a CallManager DN of e.g. 6001, in a partition call 6xxx; the
> dial
>
> >> pattern pointing to the the CME gateway also have the partition of
> 6xxx.
> >>
> >> Results:
> >> With the partition in DN 6001; Ph 6001 can call CME phone, but CME
> phone
>
> >> cannot call callmanager ph 6001.
> >>
> >> Without partition in DN 6001; everything works fine.
> >>
> >> are mine missing anything here?
> >>
> >> Godswill Oletu
> >> CCIE #16464 (R&S)
> >>
> >> _______________________________________________________________________
> >
> >
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