X Up Xtras

Author notes

My first modem

plymayer

on Aug. 18, 2023

Ah yes. My first modem (modulator/demodulator).

The Commodore RS 1200. Top dial-up speed 1200 bps.

Fond memories of calling the BBS's (bulletin board systems), interacting world wide via the fidonet, usenet and others - before the internet as we know it. Used to post my computer art on some of the local BBS.

ATDT 1-410-672-0426

OPERATING MODES
® Auto answer, auto dial (touch tone or
rotary dialing ), auto baud, auto speed,
auto mode selection (originate
or answer ).
DATA FORMAT
® Binary, serial asynchronous.
DATA RATE
@ 1200 baud and 300 baud.
MODULATION/DEMODULATION
® Bell 212A compatible and Bell 103
compatible.
COMPUTER CONNECTION
© RS232C (DB25).
PHONE CONNECTION
e Direct connect using a modular
telephone jack (USOC RJ11C).
DIALING METHOD
@ Touch tone (DTMBP) or rotary dialing.
CARRIER INDICATOR
e High frequency tone from built-in
speaker.