GSM20-CAB232 RF Solutions, GSM20-CAB232 Datasheet - Page 12

• Manufacturer Part Number: GSM20-CAB232
• Description: INTERFACE, RS232 CABLE
• Manufacturer: RF Solutions

Specifications of GSM20-CAB232

• Accessory Type: RS232 Cable Interface
• Svhc: No SVHC (15-Dec-2010)
• Cable Type: RS-232
• Connector Type A: D Type
• Connector Type B: SMA
• Lead Length: 1.1m
• No. Of Ways: 15
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS100-1 May ’07
11
3.2. Basic Operation :
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)
Network Registration
Saves parameters in
Make an emergency
Communication loss
non-volatile memory
Receiving signal
Enter PIN code
Description
Receiving an
incoming call
Make a call
Checking
Hang up
strength
call
GSM & GPRS Modem
AT+CREG?
AT+CSQ
ATA
ATD1234567;
ATD 112;
ATH
AT+CPIN=1234
AT&W
AT commands Modem response
www.rfsolutions.co.uk
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
OK
OK
+CME ERROR : 16
+CME ERROR : 3
OK
NO CARRIER
©2007 REG No 277 4001, ENGLAND.
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
Comments
Page 11