Does anybody know how to refuse calls that arrive as "unknown"? I am working with a school that doesn't want to receive any calls that have callerID blocked. They have been getting a lot of bomb threats. They are running CCM4.1(3) with 2801's running MGCP.
Unforunattely there is no way to block calls based on ANI digits with MGCP GW, you can use reject translation rules with H.323, but I am not sure if "unknown" can be caught. Other soltion is to use IPCC and write a quick script to see if the ANI filed is blank assuming that you have a PRI connected to the GW, but would require running every inbound call through IPCC.
I don't think there is a way without running all call through IPCC, but you should look into implementing MCID (Malicious Call ID)for bomb threats. I also am working for a school district and this is the route we went to deal with Bomb threats.
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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
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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 ...