[cisco-voip] CallManager Handle Call Routing with PBX interoperability

[Alan Su]

Hi Ryan,

Yes, I've tried to use IOS MGCP gateway and it worked. But it will occupy
the channel between GW-PBX. For example, extension 1315 & 1316 are PBX
analog phone, if I transfer all calls from PBX to GW and then to CCM for
call routing, even those 2 extensions will occupy the channel for in/out
calls. Unless I configure all the analog extensions in PBX and forward
others to GW. However, it'll cause other issues such as when I dialing
1315xxxx for off-net call, the PBX will treat it as 1315 extension. Because
the PBX can be upgraded to IP-based, so I was wondering is there any
solution like SIP-trunk can solve the issue. Thanks a lot ~


Regards,

Alan


2006/6/23, Ryan Ratliff <rratliff at cisco.com>:
>
> Basically you'll need some type of voice gateway to receive calls
> from the PBX (via PRI or other physical link) and send them to the
> CM.     Once the call hits the CM it gets routed normally to a phone,
> route pattern, etc.
>
> -Ryan
>
> On Jun 22, 2006, at 1:24 PM, Alan Su wrote:
>
> Dear All,
>
> I have a question about the PBX interoperability with CCM. What can I
> do to make CCM to handle all the call routing even for the PBX end-
> phone?
> One of the solution I heard about is to use SIP trunk connecting with
> CCM & PBX, but I'm not quite sure how to do that. Any suggestion or
> comment would be very grateful. Thanks.
>
>
> Regards,
>
> Alan
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>
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