Cost is a very big issue. I would suggest going with what dgahm suggested.
If you use a 3845 which has 4 NM slots and put 4 NM-HDAs, each NM-HDA can home 8 FXO lines. So the max you will get is 32 FXO ports. I have not tested this configuration, so I am not sure if 4 modules will work perfectly with out any issues on a 3845. Considering the cost of a 3845 plus 4 NM-HDA modules, plus 2 daughter cards per NM-HDA and also a DSP chip required per network module...sounds like a lot of money for 30 FXO port solution.
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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
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 ...