Data Sheet

Smart Machine Smart Decision

2 AT Commands According to V.25TER

These AT Commands are designed according to the ITU-T (International Telecommunication

Union, Telecommunication sector) V.25ter document.

2.1 Overview of AT Commands According to V.25TER

Command Description

Re-issues the last command given

ATA Answer an incoming call

ATD Mobile originated call to dial a number

ATD><N> Originate call to phone number in current memory

ATD><STR> Originate call to phone number in memory which corresponds to field

<str>

ATDL Redial last telephone number used

ATE Set command echo mode

ATH Disconnect existing connection

ATI Display product identification information

ATL Set monitor speaker loudness

ATM Set monitor speaker mode

+++ Switch from data mode or ppp online mode to command mode

ATO Switch from command mode to data mode

ATP Select pulse dialling

ATQ Set result code presentation mode

ATS0 Set number of rings before automatically answering the call

ATS3 Set command line termination character

ATS4 Set response formatting character

ATS5 Set command line editing character

ATS6 Pause before blind dialling

ATS7 Set number of seconds to wait for connection completion

ATS8 Set number of seconds to wait for comma dial modifier encountered in

dial string of D command

ATS10 Set disconnect delay after indicating the absence of data carrier

ATT Select tone dialing

ATV TA response format

ATX Set connect result code format and monitor call progress

ATZ Reset default configuration

AT&C Set DCD function mode

AT&D Set DTR function mode

SIM800 Series_AT Command Manual_V1.05 26 2014-07-31