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.<br><br><span class="content"><h2 class="pCRC_CmdRefCommand">
ccm-manager music-on-hold
</h2>
<a name="wp1072987"></a><p class="pB1_Body1">
To enable the multicast music-on-hold (MOH) feature on a voice gateway, use the <b class="cCN_CmdName">ccm</b>-<b class="cCN_CmdName">manager music</b>-<b class="cCN_CmdName">on</b>-<b style="font-weight: bold;" class="cCN_CmdName">hold</b><span style="color: Black; font-style: normal; font-weight: bold;"> </span>command in global configuration mode. To disable the MOH feature, use the <b class="cBold">no</b> form of this command.
</p>
<a name="wp1072988"></a><p class="pCENB_CmdEnv_NoBold"><b class="cCN_CmdName">ccm</b>-<b class="cCN_CmdName">manager music</b>-<b class="cCN_CmdName">on</b>-<b class="cCN_CmdName">hold</b>
</p><a name="wp1072989"></a><p class="pCENB_CmdEnv_NoBold"><b class="cBold">no</b><b class="cCN_CmdName"> ccm</b>-<b class="cCN_CmdName">manager music</b>-<b class="cCN_CmdName">on</b>-<b class="cCN_CmdName">hold</b>
</p></span><br><br><div class="gmail_quote">On Tue, Nov 18, 2008 at 9:28 PM, Jason Burns <span dir="ltr"><<a href="mailto:burns.jason@gmail.com">burns.jason@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
To add to that:<br><br>On your H.323 GW you need to add<br><br>ccm-manager music-on-hold <br><br>(yes - even if it's an H.323 GW. I don't know why this works, but I've used it successfully before)<br><br>Sometimes you'll also need to add<br>
<br>ip multicast-routing<br><br>to the config as well.<br><br>Then when you put the PSTN leg on hold you can run<br><br>show ccm-manager music-on-hold<br><br>and check out the multicast stream packet count.<br><br>show ip mroute count <br>
<br>is also useful there.<div><div></div><div class="Wj3C7c"><br><br><div class="gmail_quote">On Tue, Nov 18, 2008 at 6:50 PM, Peter Slow <span dir="ltr"><<a href="mailto:peter.slow@gmail.com" target="_blank">peter.slow@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Andre,<br>
Multicast MoH is not supported with MTPs or transcoders. CCM<br>
probably allocated a unicast stream for your MTP. when you placed the<br>
PSTN leg of the call on hold and were usign an MTP, you got around<br>
whatever was causing your Multicast MoH not to work by causing CCM to<br>
use unicast. silence on hold indicates that the multicast RTP wasn't<br>
makign it to the destination gateway, or that there was a<br>
configuration problem on that gateway.<br>
<div><br>
On Tue, Nov 18, 2008 at 9:47 AM, Andre Beck <<a href="mailto:cisco-voip@ibh.net" target="_blank">cisco-voip@ibh.net</a>> wrote:<br>
</div><div><div></div><div>> Hi,<br>
><br>
> On Tue, Nov 04, 2008 at 03:42:19PM +0100, Tim Smith wrote:<br>
>><br>
>> You would not typically require an MTP with a 2800 series gateway. It will<br>
>> support all the functions natively.<br>
>><br>
>> So in short, your VAR has most likely done the right thing. Modern gateway<br>
>> in standard setup should not require an MTP. To be sure keep an eye on RTMT<br>
>> alerts / logs for increased Media resource list exhausted events though.<br>
><br>
> I repeatedly stumbled over a certain situation where not having an MTP<br>
> actually leads to a problem even with only Cisco C(U)CM and Cisco gateways<br>
> involved. That is when<br>
><br>
> * The CCM and Gateway are connected via H.323 (either as a simple gateway<br>
> or by mediation of a gatekeeper) and<br>
> * Multicast MoH is configured.<br>
><br>
> In this situation, the PSTN side of a call will not hear MoH but just<br>
> receive silence unless the H.323 gateway is supplied with an MTP on the<br>
> CCM side.<br>
><br>
> I've seen this with 4.1.x and 5.x so far. With 5.x I had stability issues<br>
> with the MTP stuff and disabled both MMoH and MTPs to get rid of it. A year<br>
> of patches later, maybe I should retry this.<br>
><br>
> For more information, just scan back in this mailing list (archives), I<br>
> think I posted more detailed versions of my MTP issues here.<br>
><br>
> HTH,<br>
> Andre.<br>
> --<br>
> Real men don't make backups of their mail. They just send it out<br>
> on the Internet and let the secret services do the hard work.<br>
><br>
> -> Andre Beck +++ ABP-RIPE +++ IBH IT-Service GmbH, Dresden <-<br>
> _______________________________________________<br>
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