Greetings,
To use certain features on voicemail the client opted not to have International service from their carrier on their PRI. They got a call from At&t fraud and their carrier about suspected fraudulent international calls. At&t believes their PIC code was used. The client asked me why their carrier would allow a PIC code to be dialed, and why At&t would allow the calls with out them having an account? Thoughts?
Ummm...sure, I have thoughts.
AT&T are imbeciles, crooks and devoted to furthering their cellular-based racket, to the exclusion of any cogent or responsible action on behalf of their other subscribers.
IXCs may allow casual dialing up to a certain point before blocking an ANI.
If arrangements are in place, the LEC would bill the end user on behalf of the IXC.
Your lec may use AT&T to process some calls.
As far as. Pic code, I don't think a lec can block that.
Your pbx has to.
In English piease. The client said no International calls. They had no arrangement with At&t for international calls so why did their carriar and At&t allow them through? And why do both of them think I'm on the hook for the calls? BTW the client doesn't believe it and their legal is involved.
The IDDD blocking would, likely, occur in the IXC's switch as opposed to the LEC's switch.
Because at&t has no association with the end user, there would be no restrictions on the customer's ANI in at&t's IXC switch.
What make of phone system does the customer have? Does it use ARS?
It is an old Norstar 0x32. I had forwarned them years ago this could happen based on what they wanted to do. They said their carrier would allow no International calls. I looked at the restriction table on the mail ports and I'm restrocting 0 and 1. I put the restriction table on the sets and couldn't get out where they got by placing the restrictions on a set. How did they do it? I have my guess.
Who is the carrier and who choose the carrier
They either prefixed the international number with 1010288 to get to AT&T, or they prefixed 1-800-225-5277 to do the same.
Block 101XXX, and block 1800/1888/1877/etc for the voicemail ports
Earthlink is the carrier and the client chose them. The voicemail ports are now locked down only allowing the specific numbers they need allowed to go out.