CUCM How can I block unwanted calls?

Unanswered Question
May 8th, 2009

Is there a way to block calls?

Any configuration help would be appreciated.



I have this problem too.
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chadlincoln Fri, 05/08/2009 - 05:11

IP phone to IP phone, yes. Inbound calls, it depends on the type of GW you have. Can you provide more detail?

donnaavila Fri, 05/08/2009 - 05:34

We are using MGCP Gateway. Some of my end users are receiving telemarketing calls and would like them blocked.



Jaime Valencia Fri, 05/08/2009 - 05:57

there is a way but you would need to switch to H323, NO WAY WITH MGCP

Reject Calls

Call Blocking Configuration Examples

Please search NetPro, there are plenty of posts on this matter that have been asked previously and you can use as reference



if this helps, please rate

donnaavila Fri, 05/08/2009 - 07:40

That's what I was afraid of. Thanks for confirming this with me.

James Hawkins Sun, 05/10/2009 - 11:37


What I have done previously for customers with MGCP gateways is to use a translation pattern to match the calling number and change the called number to a CTI route point that forwards all calls to a Unity mailbox configured to play a message saying "Please do not make unsolicited calls etc." and then drop the call.

If you wanted to really discourage these callers, and have IPCC Express, instead of sending them to Unity you could send them to an IPCC IVR with about ten sets of menu choices before playing a message that their call is not welcome.

Jaime Valencia Sun, 05/10/2009 - 13:34

Translation patterns match dialed digits, NOT ANI, they've NEVER matched ANI

Translation Pattern Configuration

Cisco Unified Communications Manager uses translation patterns to manipulate dialed digits before it routes a call. In some cases, the system does not use the dialed number. In other cases, the public switched telephone network (PSTN) does not recognize the dialed number.


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