On Mar 23, 13:40, Cameron Kaiser wrote:
> Speaking of teletypes, I ended up with a matching set of Philips TX-1000
> Text Tells which are, I guess, meant for teletext transfer over phone
lines.
> (The manual and the machines are Dutch.) Anyone ever dealt with these?
> Know the communication protocol, or are they just like any other
traditional
> modem when they transmit/receive?
The type number looks familiar, but I can't be certain. What do they look
like? I expect they'll be V23 Mode 2 (1200 baud FSK receive using
2100/1300Hz, 75 baud FSK transmit using 450/390Hz CCITT tones). If they're
what I think they are, they can be programmed with a number to dial, a user
ID and a (numeric) password which is sent on receipt of a ctrl-E (ENQ) from
the remote end, but it should also be possible to use them manually.
Ob.pedantry: it would be Viewdata (comms channels), not teletext
(broadcast).
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Received on Thu Mar 23 2000 - 16:51:37 GMT