300 BPS DCM-7 Modem  (260-1394)    Features            Faxback Doc. # 5996

With the Tandy direct-connect, 300-bps Intelligent Modem DCM-7, your
computer or data terminal can communicate with other computers or terminals
using ordinary telephone lines.

The DCM-7 accepts data from a computer, converts the data into
two-frequency tones and then sends the tones over telephone lines to
another modem.  Conversely, the DCM-7 accepts tones from the telephone
lines and changes those tones into data that your computer understands.

This direct-connect, Bell 103-type modem is not only designed with standard
automatic dial, answer and disconnect features, but also a wide range of
system configuration enhancements as well.  Its microprocessing unit (MPU)
provides operation in both Tandy and Hayes protocol modes - each selectable
at the flip of a DIP switch.

In the Hayes protocol mode, your Modem is AT-compatible and capable of
running with Hayes software.  Special command instructions and registers in
Hayes protocol allow you to program the DCM-7 from your computer keyboard
for the same operational modes used in Tandy protocol.

For example, you can set the DCM-7 for manual originate or manual answer
mode, in which you manually dial the telephone number of answer an incoming
call when you are contacting a remote computer.  Or you can program the
DCM-7 for auto-originate or auto-answer mode and let the DCM-7 dial the
telephone number of a remote computer or answer an incoming call.  In
either Tandy or Hayes protocol, the DCM-7 can be programmed to perform
operations such as automatically seize the telephone line after a specified
number of rings and automatically redialing a phone number when
communication is not established.

Another feature of the DCM-7 is a built-in monitor speaker which enables
you to monitor audibly the dialing and data communication progress.  The
situation is reported visually on your display with messages called results
codes.

Sample programming sessions are provided in each section of this manual to
help familiarize you with the various functions of the DCM-7 and to get you
started using your Modem as quickly as possible.  After you have become
familiar with the manual and your Modem, the handy Quick Reference Card
should keep you "up and running".

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