Ultratec INTELE-MODEM manual Calling with Hayes Commands, How to call another computer or a TTY

CALLING WITH HAYES® COMMANDS

Use the Hayes command set with your personal computer and communications software. If you are using a terminal or workstation type of computer, you should use the Intele–Menu command set described on pages 5-13. When you follow these instructions, you will be using the following modem settings:

•Automatic communication mode, which means the modem will automatically use either 300-baud ASCII or 45-baud Baudot code, depending upon which code it receives from the other computer or TTY.

•Full-duplex

•Pulse dialing

Each command in this section is fully described on pages 16-20.

How to call another computer or a TTY ________________________

1.Turn your computer on.

2.Load your communications software.

3.Turn your Intele–Modem on. The POWER, BDT, and LO lights on the front panel of your modem will go on.

4.Follow your software instructions to get into terminal mode. Type AT and press the Enter Key. If everything is working right, you’ll read “OK” on your monitor.

5.Type ATD, followed by the telephone number you want to dial. If you make a mistake, use the Backspace Key to make corrections. Press the Enter Key. The number will be dialed. Your dialing command will look something like this:

ATD 5551212 [Enter]

You’ll see the SIG light flash on and off when the modem dials. If the phone rings, you’ll see the message RINGING on your screen. If the phone is busy, you’ll see the message “BUSY” on the screen.

6.When someone answers, your Intele–Modem will listen for an ASCII carrier tone from the other computer. If it hears the tone, you’ll read CONNECT on your screen. The CD and SIG lights on the Intele–Modem’s front panel will go on.

If the person you’re calling answers with a Baudot TTY, you won’t see anything on the screen until the other person begins to type. Then you’ll see the message CONNECT TTY on your screen. The SIG light will flash.

If your modem is in automatic mode (ATB Command set to 0), which is the default mode, it will listen indefinitely for an ASCII carrier signal or a Baudot code. Type the Escape Key to hang up.

If the modem is set to ASCII 300 mode (ATB3) or ASCII 110 mode (ATB4), and no carrier signal is detected after 30 seconds, you will read NO CARRIER and your modem will hang up.

7.After you establish a connection, you can type messages back and forth, send or receive files, or perform any other operations detailed in your communications software instructions. You’ll see the RXD (Receive Data) and TXD (Transmit Data) lights flashing as your modem sends and receives messages. If you’re using Baudot code, the SIG light will also flash; in ASCII mode the SIG light stays on continuously.

If you do not see the words you type on the computer monitor, change your duplex setting to half-duplex.

14 • CALLING WITH HAYES COMMANDS