Motorola 68P09396A92-A Owner's Manual page 46

ACCESSORIES
Compaq Direct Connect
The direct connection cable allows Compaq computers using
Compaq's SpeedPAQ™ 144 internal modem to transmit data or
FAXes over the cellular system. Simply connect one end of the
cable to your phone and the other end to the cellular connector on
the modem.
SpeedPAQ is a trademark of Compaq Computer Corporation.
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