User's Manual

HAYES AT COMPATIBLE COMMAND SET

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234839, Revision 2.2

After a connection is established, the response is: CONNECT

Dialing

The AT commands may be used to initiate dialing with the modem.

The D (Dial) command is used to initiate a telephone call. The most basic form of the D Command is:

ATD number

Where the number is the telephone number you are dialing.

Having set your communications software for 19200 bps operation:

Type: ATD1234 <CR>

Your modem dials the number ‘1234’. You may substitute this number for the number of any

remote modem.

If your modem receives a character from your computer while dialing is being performed, it

immediately hangs up, sends a NO CARRIER response message to the computer and returns

to local command state.

After a few seconds the message, CONNECT appears on the screen.

If a NO CARRIER message appears, your modem has not been able to make a connection. Check

your communications software is set for 19200 bps operation and your modem is correctly connected

to your computer.

To hang up the modem, type an escape sequence (+++). The modem responds with an OK message.

Type: ATH0 <CR>

The modem hangs up.

Hanging Up

The H0 command is used to hang up the modem. After you have finished communicating with

another modem you must hang up your modem.

Similarly, you must hang up the phone after calling another person. If you don’t, no one will be able to

call you.

To hang up your modem:

Type: ATH0 <CR>