[net.followup] Modem Users Beware: Detecting Modems

ggr@pyuxbb.UUCP (10/22/83)

The Phone Company already has circuits to detect modems -- they are used
on toll trunks to disable the echo suppression circuits when the
modem carrier is detected.

			=== Guy Riddle == AT&T Bell Laboratories, Piscataway ===