Motorola V.34-SDC manual ATH, Hang Up, ATI, Display Software Information, ATO, Leave Command Mode

Using the AT ACU

If ATD is issued while the modem is in escape mode or remote configuration, the modem responds with:

ERROR

NOTE: Any invalid characters inserted into the dial string will be ignored.

ATH, Hang Up

Settings: 0, Modem hangs up

1, Busy Out the modem

Format: ATHn<CR>

You may hang up the modem after entering the online escape mode by typing ATH or ATH0. Typing ATH1 while in command mode causes the modem to Busy Out

until either the ATH command is entered or the key is pressed. NOTE: For busy out, make certain that the TELCO OPT’S Telco option is set for RJ4MB.

ATI, Display Software Information

Settings: 0, Displays 960

1, Displays 000

2, Displays OK

9, Displays reason for last disconnect

Format: ATIn<CR>

The messages described above are displayed in addition to the “OK” sent when AT command processing is complete. NOTE: If this command is the last or only command in a command line, an additional “OK” message follows the above responses.

ATO, Leave Command Mode

Settings: 0, Leave command mode and return online

1, Leave command mode, return online, and initiate a retrain

Format: AT0n<CR>

This command can be used only when the modem is in the online escape mode, or after a “;” (semicolon) dial modifier in a dial string.

The user may leave escape mode and return to data mode by typing ATO or ATO0. If a retrain is desired while returning to data mode, ATO1 must be used.

If this command is issued while the modem is disconnected from the phone line, the modem responds with:

NO CARRIER

If this command is issued while the modem is in a remote configuration session, the modem responds with:

ERROR

NOTE: If the ATO command is issued after a “;” (semicolon) dial modifier (return to command state after dialing), the modem trains as an originate modem.

5-8 Using the AT Automatic Calling Interface