[cisco-voip] Media Termination Point

[Justin Steinberg]

That burned me the first time also.  I thought all 'ccm-manager' commands
were MGCP related.  But low and behold, the IOS voice command reference
doesn't say anything about mgcp.

ccm-manager music-on-hold

To enable the multicast music-on-hold (MOH) feature on a voice gateway, use
the *ccm*-*manager music*-*on*-*hold* command in global configuration mode.
To disable the MOH feature, use the *no* form of this command.

*ccm*-*manager music*-*on*-*hold*

*no** ccm*-*manager music*-*on*-*hold*


On Tue, Nov 18, 2008 at 9:28 PM, Jason Burns <burns.jason at gmail.com> wrote:

> To add to that:
>
> On your H.323 GW you need to add
>
> ccm-manager music-on-hold
>
> (yes - even if it's an H.323 GW. I don't know why this works, but I've used
> it successfully before)
>
> Sometimes you'll also need to add
>
> ip multicast-routing
>
> to the config as well.
>
> Then when you put the PSTN leg on hold you can run
>
> show ccm-manager music-on-hold
>
> and check out the multicast stream packet count.
>
> show ip mroute count
>
> is also useful there.
>
>
> On Tue, Nov 18, 2008 at 6:50 PM, Peter Slow <peter.slow at gmail.com> wrote:
>
>> Andre,
>>  Multicast MoH is not supported with MTPs or transcoders. CCM
>> probably allocated a unicast stream for your MTP.  when you placed the
>> PSTN leg of the call on hold and were usign an MTP, you got around
>> whatever was causing your Multicast MoH not to work by causing CCM to
>> use unicast. silence on hold indicates that the multicast RTP wasn't
>> makign it to the destination gateway, or that there was a
>> configuration problem on that gateway.
>>
>> On Tue, Nov 18, 2008 at 9:47 AM, Andre Beck <cisco-voip at ibh.net> wrote:
>> > Hi,
>> >
>> > On Tue, Nov 04, 2008 at 03:42:19PM +0100, Tim Smith wrote:
>> >>
>> >> You would not typically require an MTP with a 2800 series gateway. It
>> will
>> >> support all the functions natively.
>> >>
>> >> So in short, your VAR has most likely done the right thing. Modern
>> gateway
>> >> in standard setup should not require an MTP. To be sure keep an eye on
>> RTMT
>> >> alerts / logs for increased Media resource list exhausted events
>> though.
>> >
>> > I repeatedly stumbled over a certain situation where not having an MTP
>> > actually leads to a problem even with only Cisco C(U)CM and Cisco
>> gateways
>> > involved. That is when
>> >
>> > * The CCM and Gateway are connected via H.323 (either as a simple
>> gateway
>> >  or by mediation of a gatekeeper) and
>> > * Multicast MoH is configured.
>> >
>> > In this situation, the PSTN side of a call will not hear MoH but just
>> > receive silence unless the H.323 gateway is supplied with an MTP on the
>> > CCM side.
>> >
>> > I've seen this with 4.1.x and 5.x so far. With 5.x I had stability
>> issues
>> > with the MTP stuff and disabled both MMoH and MTPs to get rid of it. A
>> year
>> > of patches later, maybe I should retry this.
>> >
>> > For more information, just scan back in this mailing list (archives), I
>> > think I posted more detailed versions of my MTP issues here.
>> >
>> > HTH,
>> > Andre.
>> > --
>> >   Real men don't make backups of their mail. They just send it out
>> >    on the Internet and let the secret services do the hard work.
>> >
>> > -> Andre Beck    +++ ABP-RIPE +++      IBH IT-Service GmbH, Dresden <-
>> > _______________________________________________
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>> > cisco-voip at puck.nether.net
>> > https://puck.nether.net/mailman/listinfo/cisco-voip
>> >
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