I have a 3725 router with an NM-HDA card in it. The installation was done about a month ago and worked fine. I have on pair of wires for an FXS port coming off the router to a boegn paging system. All of a sudden last week it stopped working. I am picking up a local AM station on all 4 pairs of the FXS wires. The only thing that I can figure is that the building is acting like a giant antenna. I have the router grounded but Im not sure how solid the ground is. THere is a transmitting station for the radio about 5-7 miles form the site. Has anyone ever had this happen or have any ideas on how to stop it? Even if I shut the ports down I still get the noise. This happens with a butt set connected directly to the wires of the amphenol cable.
After more testing I found out the noise was coming from the Verizon pots lines. After talking to one of our wiring contractors I found out that it is a common occurance in that area. He said Verizon can put filters on the lines to get rid of the interference.
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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 ...