CABLE-RS232 RFSOLUTIONS [rfsolutions.ltd], CABLE-RS232 Datasheet - Page 9

• Manufacturer Part Number: CABLE-RS232
• Description: LOW COST GSM MODEM
• Manufacturer: RFSOLUTIONS [rfsolutions.ltd]

DS-GSMT35I-2
4.2 Basic AT Command List
The commands in the table below can be used for basic control of the GSM modem.
Description
Network Registration
Checking
Receiving signal
strength
Receiving an
incoming call
Make a call
Make an emergency
call
Communication loss
Hang up
Enter PIN code
Saves parameters in
non-volatile memory
Oct ’07
www.rfsolutions.co.uk
AT commands
AT+CREG?
AT+CSQ
ATA
ATD1234567;
ATD 112;
ATH
AT+CPIN=1234
AT&W
L
OW
C
OST
©2007 REG No 277 4001, ENGLAND.
Modem response
CREG=<mode>,1
CREG=<mode>,2
CREG=<mode>,0
+CSQ: 20,0
RING
OK
OK
CME ERROR : 11
CME ERROR : 3
CME ERROR : 10
OK
NO CARRIER
OK
OK
+CME ERROR : 16
+CME ERROR : 3
OK
GSM M
ODEM
Comments
Modem registered to the network
Registration lost, re-registration
attempt
Modem not registration on the
network, no registration attempt
The first parameter has to be at
least 15 for normal communication
An incoming call is waiting
Answer the call
Don’t forget the « ; » at the end for
« voice » call
Communication established
PIN code not entered (with + CMEE
= 1 mode)
AOC credit exceeded or a
communication is already
established
Cannot read the SIM card
Don’t forget the « ; » at the end for
« voice » call
PIN Code accepted
Incorrect PIN Code (with +CMEE =
1 mode)
PIN already entered (with +CMEE =
1 mode)
The configuration settings are
stored
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