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Community Member

CME/SRST Site

We are going to be brining on a remote site that will have CME/SRST running. They will be connnect to a CUCM 5 clusters. I have read different post were poeple are using MGCP and some H323. I believe I saw a document that Cisco was recommending h323 so that siginaling traffic did not cross that WAN is this still true? Is there any issue with running mgcp for the wan site?

5 REPLIES
Community Member

Re: CME/SRST Site

H323

I would say that MGCP is for Gateways not for remote sites with SRST, Signaling is anyway going from phones in remote site to Callmanager in Main site.

When you use CME in Remote site, then you can make just a H323 or SIP trunk to Callmanager.

Hall of Fame Super Silver

Re: CME/SRST Site

It's a design choice which protocol you will use, as far as SRST/CME it supports both, however it requires H323 setup, so if you are using MGCP in normal operation h323 fallback will need be configured.

HTH,

Chris

Community Member

Re: CME/SRST Site

There is only one reason that I was really looking at MGCP. In my call manager I want to have a rendunant gateway setup an another location in the event that their local PRI goes down. In order to have calls automatically reroute I believe I will need to be running MGCP on the branch gateway. Otherwise call manager will just send the calls to the gateway without knowing the status of their local PRI.

Hall of Fame Super Silver

Re: CME/SRST Site

Absolutely not, you can use H323 for that as well and structure your dial-peers accordingly. You may need to play with routing service parameters in order to get it to work though.

Chris

Community Member

Re: CME/SRST Site

There is only one reason that I was really looking at MGCP. In my call manager I want to have a rendunant gateway setup an another location in the event that their local PRI goes down. In order to have calls automatically reroute I believe I will need to be running MGCP on the branch gateway. Otherwise call manager will just send the calls to the gateway without knowing the status of their local PRI.

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