DS020-7 Oct ‘06

©2006 REG No 277 4001, ENGLAND.

Page 13

Followings are examples of some AT commands. Please refer to the AT Command guide for a full description.

Note : Issue AT+CMEE=1 to have extended error code (+CME ERROR)

Description

AT commands Modem response

Comments

AT+CREG?

CREG=<mode>,1

Modem registered to the network

CREG=<mode>,2

Registration lost, re-registration attempt

Network Registration

Checking

CREG=<mode>,0

Modem not registration on the network, no

registration attempt

Receiving signal

strength

AT+CSQ

+CSQ: 20,0

The first parameter has to be at least 15 for normal

communication

RING

An incoming call is waiting

ATA

Answer the call

Receiving an

incoming call

OK

ATD1234567;

Don’t forget the « ; » at the end for « voice » call

OK

Communication established

CME ERROR : 11

PIN code not entered (with + CMEE = 1 mode)

CME ERROR : 3

AOC credit exceeded or a communication is

already established

Make a call

CME ERROR : 10

Cannot read the SIM card

ATD 112;

Don’t forget the « ; » at the end for « voice » call

Make an emergency

call

OK

Communication loss

NO CARRIER

ATH

Hang up

OK

AT+CPIN=1234

OK

PIN Code accepted

+CME ERROR : 16

Incorrect PIN Code (with +CMEE = 1 mode)

Enter PIN code

+CME ERROR : 3

PIN already entered (with +CMEE = 1 mode)

AT&W

Saves parameters in

non-volatile memory

OK

The configuration settings are stored