Apparatus for converting direct coupled data devices to acoustic coupled data devices

DETAILED DESCRIPTION A method and apparatus for converting direct coupled data devices to acoustic coupled devices is disclosed.
The apparatus consists of an acoustic coupler and associated electronics to provide acoustic coupling to a telephone handset and to connect to a direct connect modem or other data device to allow operation of the direct connect modem in most modes as if directly connected to a telephone line.
The device disclosed includes circuitry for off-hook detection for automatically turning on the electronics, so that battery power is only active when required.
Other features and characteristics of the device are disclosed.