Appendix

Appendix L: AT Command Summary (TA)

How To Use AT Commands

Usually, your data communication software controls the ISIHI-2S terminal adapters for you. However, you may also want to use AT commands,which give you complete control over the TAs. Be careful using these commands because

loose its ability to control the TA. If you find that an AT command causes a problem, turn the computer off and then back on to reset AT commands to the factory default settings. You also can type AT&F to return to the factory default setting.

To use an AT command, you must first:

1.Run your communication software.

2.Configure the software for the appropriate COM port and IRQ settings, if necessary.

3.Enter Terminal mode (aka Command mode, Local mode, or Direct mode). This is the mode in which most data comm software packages start up. Type the AT command and press ENTER. For example, type ATH0 and press ENTER to hang up the TA connection or AT&V and press ENTER to display current configuration.

Most AT commands can be entered in strings (on the same command line) without spaces between the individual commands. For example: AT&VH0 <ENTER>.

The TA usually returns a response (or Result Code) at the next line if it understands the command. The response usually is OK or ERROR unless the AT command provides other (extended) messages.

COMMAND

DESCRIPTION

AT

Attention Code

 

The attention code precedes all command lines except A/ and the escape sequence.

RETURN

Return key

 

Press the RETURN (ENTER) key to execute most commands (sometimes abbreviated <cr>).

+++AT<cr> In-Band Escape Code

TA enters command mode (without disconnecting the call) when online with a remote device.

<break>AT<cr> Out-of-Band Escape Code

TA enters command mode while remaining online.

AAnswer Call

Forces the TA to answer an incoming call. To cause the TA to autoanswer, set register S0 to a value higher than 0.

DDial

Causes TA to dial a telephone number (e.g., ATD785-3500 <cr>).

DSn Dialing a Stored Telephone Number

n = 0–9

To dial a stored telephone number, type ATDSn in terminal mode, where n is the location of the number you want to dial. For example, typing ATDS6 <cr> dials a telephone stored in memory register 6 location.

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Multi Tech Equipment ISIHI-2S manual Appendix L AT Command Summary TA, How To Use AT Commands
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ISIHI-2S specifications

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