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
Hi Marc,
I suggest you to try miniSipServer(MSS) which is a SIP server for windows. You can use miniSipServer to connect to your carriers and register your SIP phones/clients to MSS.
In MSS, you can configure dialing plan to block special service numbers, and more, it provides a feature 'system blacklist', it can also help you to block calls.
Have a try.
B.R. Hongtian
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