Block calls with no caller ID

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Jun 20th, 2008
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I've been looking around and haven't got an answer yet for this.

Is it possible to block calls tha come from PSTN with no caller ID? GW is H.323.

I know is a strange request but customers are customers.

If it is possible, I would like to know how is it done.

Apreciate your time,


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JD Jones Fri, 06/20/2008 - 08:32
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I have done it by using IPCC express. Basically, you have your callmanager call a trigger from the gateway on an inbound call and that trigger runs a script to see if it can determine caller ID. If not, then it plays a message and disconnects, if so, then it looks at the orignally called number and trasnfers to that number. not the most elegant way of doing things but it works. I would also check legal restrictions around it if it's a school or public entity...

rpenahelmig Fri, 06/20/2008 - 08:51
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Thanks for the prompt response. I can see how that could be done, good workaround, but there is the detail about licenses for IVR ports and having IPCC installed ;o).

I was thinking about Unity, you think it can be pulled out with Unity? Setting a side the fact that ports will be an issue?

Thanks again!!

paolo bevilacqua Fri, 06/20/2008 - 11:26
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Hola, you can use a translation rule like:

voice translation-profile no-anon

translate calling 100

voice translation-rule 100

rule 1 reject //

voice-port x/y/z

translation-profile incoming no-anon

Or even route to an announcement if you want, let us know what is the preference.


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