9 Mar
2017
9 Mar
'17
11:54 p.m.
Or it THOUGHT it heard a tone - some people's voices could trigger it.
Or the actual bells still ringing for a short period of time after you
picked up the handset even.
Some of the acoustic couplers I played around with would start signing
when people were talking in the same room, or certain music was playing.
I did a lot of work with 300 (103 standard) and 1200 baud modems (both
202 and 212 standard), and some of them were very quirky. I'm trying to
remember if the 202 initiated any tones on the originating side, but I
can't remember.
The 202 standard is still in use to transmit caller ID on phone lines
between the 1st and 2nd rings.
Also, if they were used for dial-back, they could have been set to
originate.
On 3/9/2017 4:29 PM, Dave Horsfall wrote:
On Thu, 9 Mar 2017, Noel Chiappa wrote:
Interesting: I've heard this same story, but
told about TIPs and the
ARPANET. A computer at BBN was set up to regularly dial all the TIP
modem lines, to check that they were working. One line was always down,
so they listened in, and heard some human say "it's just that pevert
with the whistle again".
I wonder which one was the original: anyone know for sure?
Now that takes me back;
urban myth, because the calling modem didn't
squeak until the called modem did.