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Posted by Carl Navarro on September 7, 2007, 8:15 am
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On Thu, 06 Sep 2007 13:42:02 -0700, berlacher@schmaili.com wrote:
>Hello!
>
>I want to setup a VOIP project in the USA and want to block phone
>calls to special numbers like expensive service numbers, mobile phone
>numbers and phone numbers like police and so on. I have no idea how
>the phone number structure in the US is set up. So I am looking for
>kind of a list that tells me in which way such numbers can be checked
>by a script so that only "normal" phone numbers can be called.
>
>Best regards
>Marc
Our system doesn't work that way. The caller pays for calls into
XXX-976 numbers, but I think they only work in your home area code.
With the exception of a specific 800 numbers calls to toll-free
numbers are free, and except for a Carribean code, calls to area codes
are billed at the same rate. If you call a cell phone, the called
number pays airtime and the caller only has to pay if it is long
distance.
As far as police, you can randomly dial the 10-digit number associated
with 911 in our exchange...well sort of, but you'd have to know all
the trunk numbers to block them.
Carl Navarro
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