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MGCP Gateway instead of H323

Endorsed Question
Jul 15th, 2014
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Hi team, we have H323 gateways in our CUCM 8.6.1. What is the benefit to change it to MGCP? We are using Cisco Routers 3925.

VIP Endorsed by David Hailey
kelvin.blair about 3 years 1 month ago

Take a look at the following write up from Mr. Bell.  This should answer your question. 


Also, take a look at this document.


I hope this helps.



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Overall Rating: 5 (3 ratings)
David Hailey Tue, 07/15/2014 - 16:34
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My colleague Bill's blog as noted above is worth the read.  You will get a mixed bag of answers on here from folks who believe that you should always use H323 to those who only have used MGCP because of it's simplicity when setting it up.  To summarize some of Bill's points:

If you have a remote site and need SRST, it's usually easier to just use H323 (or SIP) because you're gonna need much of that config anyway to get much value out of SRST.

If you are not comfortable with IOS and/or have limited support staff, MGCP has some value.  It centralizes the call control and routing whereas H323/SIP push it to the edges.

There isn't really a one size fits all answer here.


leandro.abreu Wed, 07/16/2014 - 04:48
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Thx Davi, we have remote offices and use SRST and have limited support staff on the edges, there is why we are looking on MGCP solution. Do you think that our scenery would not support MGCP?

David Hailey Wed, 07/16/2014 - 06:52
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It's not really a matter of "supporting" MGCP or not...it's a matter of preference.  If you're going to use SRST then my preference is to just use H.323 for the remote site gateway. You can do MGCP with failover to SRST and that's OK too.  When you do that, you use MGCP and CUCM for standard call control/processing but then fall back to an H.323 config on the same gateway for SRST call processing...hence, that's why I'd say just use H.323 to start with.


leandro.abreu Thu, 07/17/2014 - 06:32
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I understood your point David. Did you already use  the SRST Manager? I'm wondering if that gonna help us implement the SRST with MGCP.


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