|[AMRadio] Numbers Stations - NPRs slant|
Robert M. Bratcher Jr.
bratcher at pdq.net
Sat Nov 13 21:30:44 EST 2004
At 10:54 AM 11/13/2004, you wrote:
>I was never in on the busy signal thing, but I did do something
>similar. Telephone numbers that had the suffix beginning with 99 were
>designated as "official" numbers for internal phone company use. As I
>recall, you could dial xxx-9929 and have a friend dial xxx-9930, and the
>two of you could hold a conversation.
Thats known as a loop. Lots of them out there but most are muted so you
can't talk on them. Other prefix exchanges worked too.
The other fun thing is to find a bridge which is a bunch of numbers toed
together so several people could be on at once.
I used to be a phone phreak in my younger days back when the blue box (for
free long distance called) used to work.
The coin sounds in a payphone is called a red box. Doesn't work on COCOT
(customer owned) payphones because the dialtone you hear is not from Ma
Bell's line but generated by the phone.
More information about the AMRadio mailing list
This page last updated 11 Dec 2017.