|[AMRadio] Numbers Stations - NPRs slant|
don.schichler at PaeTec.com
Mon Nov 15 12:28:25 EST 2004
That's right, some of those numbers were used for "loop-around" transmission
testing of trunk circuits. Having been in the telecommunications industry
for 30+ years, I remember many times hearing kid's conversations when we
tried to use them for their intended purpose. After listening to them for a
little while, one of my co-workers would sometimes plug in and say "this is
the police and we have your phone numbers!" That usually scared them off -
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net]On Behalf Of Robert M. Bratcher
Sent: Saturday, November 13, 2004 9:31 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] Numbers Stations - NPRs slant
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.
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