Blocking calls

Posted on 2011-03-24
Last Modified: 2012-05-11
How to block certain incoming phone numbers on a cisco voip ip phone?
Question by:angelface20
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LVL 20

Expert Comment

by:José Méndez
ID: 35217669

Routing calls based on calling number is only possible when using a H.323 gateway. If you are using

Internal extension dialing can be  restricted with Calling Search Spaces and Partitions.

Do you want to block incoming calls through a gateway from a particular caller?

Author Comment

ID: 35220556
Just wanting to block 12 numbers from calling a particular phone. Is that possible?
LVL 20

Expert Comment

by:José Méndez
ID: 35225007
Ok, but what is the call flow? a 12 digit number is calling one of the company numbers, which is probably matched to an IP Phone? If so, only having H.323 gateways will help you.

Let me know.
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Author Comment

ID: 35226268

True I am not trying to use the gateway. Trying to see if I could restrict the numbers  through the configuration page on the phone being called.  It is a 7 digit number.


Author Comment

ID: 35456870
If i want to have only certain numbers calling a internal number how would that setup look?
LVL 20

Accepted Solution

José Méndez earned 500 total points
ID: 35457112
Ah ok, I think I get it now. So far CallManager is dumb enough to not be able to differenciate calls by ANI. Pretty much, if what you want is to restrict who can call your internal extensions on the outside, based on the calling number, the option won´t be in the called phone configuration page. CallManager doesn´t support it. You can go to the gateway configuration page and modified the Inbound Calls section CSS, so all calls incoming through that device will be resctricted by such CSS. But it doesn´t allow you the flexibility of a per caller'number basis.

Hope it helps.

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