I need to integrate Cisco 3825 with PBX (Iwatsu). PBX vendor advise me to provide 1x 4 Port FXO card to connect to PBX 4 Port FXS card.. another 1x 4 Port FXS card to connect to PBX 4 Port FXO card. We have about 30 analog phones at the PBX system. I need both way communication between the cisco IP phone and 30 analog phones. Any idea do this work?
Your vendor is correct, you need both FXS and FXO cards so you can directly dial extensions in both directions. Basically the router will dial on FXO ports, and receive calls on FXS. There are also two-ports cards that you can use. Remember in the router you will also need a minimum of PVDM2-8 for DSP resources.
The alternative is to use ISDN BRI if available on the PBX, that would give you a much simple configuration, and more features.
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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 ...