Standard At Hayes Commands For Controlling The M20 - Siemens M20 Terminal Technical Description

Siemens Information and Communication Products
5.3

Standard AT Hayes commands for controlling the M20

Command Function
A/ Repeat previous command line
+++pause Switch from data mode to command mode
ATA Answer a call
ATD Mobile originated call to dial a number and call of supplementary services
ATD><mem><n> Originate call to phone number <n> in memory <mem>
ATD=<n>; Originate call to phone number <n> in current memory
ATD<str> Originate call to phone number in memory with corresponding alphanum. field
ATDI<n> Mobile originated call to dialable ISDN number <n>
ATDL Redial last telephone number used
ATDS Dial stored phone number in ME-phonebook
ATE Enable command echo
ATH Disconnect existing connection
ATI Display product identification information
ATL Set monitor speaker loudness
Command ignored, command for V.25ter compatibility only
ATM Set monitor speaker mode
Command ignored, command for V.25ter compatibility only
ATO Switch from command mode to data mode
ATP Select pulse dialling
Command ignored, command for V.25ter compatibility only
ATQ Set result code presentation mode
ATS0 Set number of rings before automatically answering the call
ATS2 Set Hayes ESC character
ATS3 Set command line termination character
ATS4 Set response formatting character
ATS5 Set command line editing character
ATS6 Set pause before blind dialling
Command ignored, command for V.25ter compatibility only
ATS7 Set number of seconds to wait for connection completion
ATS8 Set number of seconds to wait when comma dial modifier
Command ignored, command for V.25ter compatibility only
ATS10 Set disconnect delay after indicating the absence of data carrier
ATS12 Set pause length for Hayes ESC sequence
ATT Select tone dialling
Command ignored, command for V.25ter compatibility only
ATV Set result code format mode
ATX Set CONNECT result code format and call monitoring
ATZ Set all current parameters to user defined profile
AT&C Set circuit Data Carrier Detect (DCD) function mode
AT&D Set circuit Data Terminal Ready (DTR) function mode
AT&F Set all current parameters to manufacturer defaults
AT&S Set circuit Data Set Ready (DSR) function mode
AT&V Display current configuration
AT&W *) Store current parameter to user defined profile
AT&Z Store telephone number in SIM fixdialling memory "FD"
Version 8 dated 15.03.00
AT command interface
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