User's Manual

Table 1 Modem Commands
Standard Commands
ATA Answer mode: Modem monitors telephone line
A/ Repeat last command line; entered without “AT”
ATB Switching between BELL/CCITT Standards at 300 or 1200 bps
ATD Enter automatic dialing
ATE Controlling of echo modem commands on screen
ATH Break off an existing connection
ATI Information on Modem product code
ATL Loudspeaker volume control
ATM Switch on and off loudspeaker
ATN Select Data Rate Handshake
ATO Return to Online-mode after entering Esc sequence
ATQ Controlling modem messages
ATS Read and modify modem register(s)
ATT Select Tone dialing
ATV Modem message format (verbal or numeric)
ATW Directing speed messages
ATX Modem function during dialing; modem messages
ATY Long Space Disconnect
ATZ Modem Reset and Load one of the stored modem profiles
+++ Escape Sequence to return temporarily to Command mode
AT&C Controlling M5 (DCD) Signal at the serial interface
AT&D DTR Option
AT&F Load the factory setting
AT&G Switch on a Guard Tone
AT&K Flow Check
AT&R Controlling M2 (CTS) and S2 (RTS) Signal at the serial interface
AT&S Controlling M1 (DSR) Signal at the serial interface
AT&T Modem test functions
AT&V Displaying current configuration
AT&W Storing Modem settings
AT&Y Selecting the configuration which will be active after modem start
AT&Z Storing telephone numbers
AT+MS Select Modulation
Extended MNP- and V.42bis-Befehle
AT\A MNP Block Size
AT\B Transmit Break
AT\G Set Modem Port Flow Control
AT\J bps Rate Adjust Control
AT\K Set Break Control
AT\N Set Operating Mode
AT\Q Set Serial Port Flow Control
2-2 AT COMMANDS: DATA MODEM