Ah, well... you have come to the point now where it is best explained the difference between 2 different styles of voice signaling protocols.
One style is peer to peer. H.323 is an example, and SIP is another. With H.323 every terminal and gateway are peers when speaking with each other. They simply hand off information about the call and expect the next hop to handle the rest. The endpoints are intelligent. A gatekeeper can be added to provide functionality (specifically, RAS being the most basic thing) that would otherwise not be available to endpoints.
Another style is master-slave. An example is Skinny. The CallManager has device control over each Skinny endpoint, such as phones, gateways, etc. Any decision making as far as call routing, call progress information, anything about device behavior (depending on the specific protocol) is controlled by the call agent.
MGCP is also a master-slave style signaling method, so the MGCP call agent makes all call routing type decisions, including Call Admission Control, so in the CallManager case, the CM would do the Call Admission Control using what it has - Locations. But with Locations you can't fail over to the PSTN instead of the WAN.... yet.
Also note that there are other types of admission control that could apply, like bandwidth admission such as RSVP. That is a different story.
You have reached the Cisco Logistics Support Center.. To Check Status of
your RMA, visit Product Returns & Replacements (RMA). Need help? Contact
us by Phone or Email. North Americas Phone: 1800 553 2447 Option 4
Email: email@example.com Europe Phone: +3...
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...