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

With the Tandy direct-connect, 300-bps Intelligent Modem DCM-7, your com-
puter 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 run-
ning 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 situat-
ion 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".

(css 08/05/93)