[TUHS] Harasing whistlers (Was: UUCP mis-history?)

Arthur Krewat krewat at kilonet.net
Fri Mar 10 08:54:26 AEST 2017

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 

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.

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