I've been using the Valcom VIP-820 & VIP-800's for some time now with great success. All of their VIP units plug into the IP network. The VIP-820 also plugs into an FXS port to get it's extension. The 820 acts as a control unit as it is the only unit connected to FXS. It communicates to it's associated zones (the VIP-800 units) via IP. The VIP-800's plug into to a local paging amplifier, the speakers are then wired back to the amplifier. When I dial the number for paging I get to the central VIP-820, I can then dial a code for all page that will send the signal to all the 800's or a code for an individual 800 if I want to pick a particular zone. The IP zone control was particularly important for me because I don't have a physical copper cable between my two buildings. The solution was remarkably cheap too, maybe $200-500 per control unit, plus the cost of speakers and amplifiers. I did have some problems connecting the 820 to an FXS in a VG200, I ended up using a port on a VG248 and it has worked flawlessly.
As with the others I have connected a variety of Valcom, Avaya, and Bogen zone page controlls to FXO ports from Call Manager. Generally the system simply sees it as another route.
I also have an installation that was using only digital facilities (no FXO's) so I looked for another low cost alternative to connect paging. What I eventually used was an FXS port connected to a Valcom Centrex Page Adapter. This scenario allowed me to use on of the analog ports (FXS) that I had already purchased.
Basically I ring the station that is attached to the page adapter (I made this 1 digit to streamline the application). The device senses the ring and makes the connection to the zone page controller - which produces a tone. The user then punches in the appropriate Zone and makes the page. Works really well and with little additional cost.
Either is pretty easy - if you want a basic diagram let me know and I will send a viseo drawing of the hookup
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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
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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 ...