[cisco-voip] IOS MGCP question

[Kevin Thorngren]

Hi Ed,

According to the Feature Navigator 12.2(16a) on the VG200 does not 
support MGCP PRI backhaul to CCM.  You will need to use a 12.2T version 
or a 12.3 version on the VG200.

You can search by feature from here:
http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

Look for the feature "MGCP PRI backhaul and T1-CAS support for Call 
Manager (IP-PBX)".  Then select the VG200.  This will give you all your 
options and you can determine which IOS will best fit your needs.

Also for a back to back config don't forget to but the "isdn 
protocol-emulate network" command on the serial interface of one of the 
routers to bring up layer 2.

HTH,
Kevin

On Dec 22, 2005, at 11:58 AM, Ed Leatherman wrote:

> Hi folks,
>
> I'm pretty new to setting up gateways with callmanager, up until now
> all i've had the chance to mess with has been 6608 cards.. have a
> question about some older hardware if anyone has any ideas:
>
> I have 2 clusters configured in the lab, one is "WVU", the other is
> "Potomac State". WVU has a 2611XM router with a NM-HDV/1MFT-T1 VWIC,
> configured as a MGCP gateway and setup for PRI. everything looks good
> on it from what I can tell. register on CCM, PRI Backhaul connection
> is up, it sees the mgcp enpoints, etc etc.
>
> "Potomac State" has a VG200 with a NM-HDV/1MFT-T1 VWIC also. i'm
> running IOS 12.2(16a) on it right now. have the gateway T1 interfaces
> connected with a T1 crossover cable, have a green CD light and the sho
> isdn command indicates that the d-channels are up.
>
> "Potomac State" CCM shows the VG200 as registered, and sho ccm-manager
> confirms that. but, IOS will not take the command "isdn bind-l3
> ccm-manager" on the serial interface.. which is what the documentation
> tells me to do to get the PRI backhaul to callmanager working. also I
> see errors in trace files saying something about tcp connection not
> open, which is making me think the PRI backhaul isnt working. I see
> minimal messages when i turn on debug mgcp packets, one or two intial
> messages and then the vgw just keeps updating CCM with "nothing is
> happening" messages, but nothing else, no messages from CCM back to
> the gateway other than "200 OK" type messages. Trying to call out from
> Potomac State to WVU using a route pattern pointed at the gateway just
> gets me reorder, nothing even seems to show up on the VG200 debug.
>
> Any ideas? neither "isdn bind-l3 ccm-manager" nor "ccm-manager config"
> seem to work on this VG200 no matter which IOS i put on it, I also
> tried the latest IOS but I couldnt even get the mgcp endpoints to come
> up with that version. probably something very obvious that im missing
> here.
>
> Happy Holidays,
>
> Ed Leatherman
> WVU Telecommunications
>
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