Black Box MD1640A, MD1641A manual Simple Operations, Answer/Originate Voice/Data Toggle Switch

CHAPTER 2: Installation and Connection

2.4.1 Simple Operations

You can dial a number by using the ATD command and the phone number of the modem with which you wish to connect, e.g., ATD6127853500. Your modem will dial the number, and hear a “scrambling” noise as the modem negotiates the kind of connection it can make, and once the modems have settled on a common connection, you will receive a connect message on your computer’s video display. As the modem dials and connects, you may notice changes across its front LED panel: the OH (Off Hook) LED lights to let you know the modem is operating as if you had picked up the handset to a phone. The CD (Carrier Detect) LED lights to let you know the modem has detected a device it can connect to. A speed LED lights to let you know at which speed the connection has been made.

To hang up a call, enter +++ATH<CR>. Your modem will return on hook, just as if you had returned a phone’s handset to its cradle. Notice also that the OH, CD and speed LED’s are no longer lit. Your video now displays OK, signifying that your modem is ready for your next command.

2.5 The Answer/Originate - Voice/Data Toggle Switch

Located on the front of the modem is a Voice/Data "toggle" switch with Originate/Answer capabilities. This switch enables the modem to auto- matically dial a phone number stored in the N1 location of memory whenever this switch is toggled. (Note that you must first enter AT$VD1&W0<CR>. This command string enables Voice/Data dialing when the Voice/Data toggle switch is activated.)

If you are "manually" dialing with an attached telephone device (and not with your keyboard), your Modem originates when this switch is toggled to the corresponding position (DOWN); and if you are "manually" answering (modem is not configured to automatically answer via S-Register S0 setup), the Modem answers when this switch is toggled to the corresponding position (UP).

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