M100 CDMA
plus
www.maestro-wireless.com
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Then you can type command like “AT” and check the "OK" response from the modem.
Basic operations
Followings are examples of some AT commands. Please refer to the AT command document for a full description.
Note:
Issue AT+CMEE=1 to have extended error code (+CME ERROR)\
Description
AT commands
Modem response
Comments
Network registration checking
AT+CREG?
CREG=<mode>,1
Modem registered to the network
CREG=<mode>,2
Registration lost, re-registration attempt
CREG=<mode>,0
Modem not registered 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
Receiving an incoming call
RING
An incoming call is waiting
ATA
OK
Answer the call
Make a call
ATD1234567;
OK
Communication established (Don’t forget
the “;” at the end for “voice” call)
+CME ERROR: 11
PIN code not entered (with +CME=1
mode)
+CME ERROR: 3
AOC credit exceeded or a communication
is already established
Make an emergency call
ATD 112;
OK
Communication established (Don’t forget
the “;” at the end for “voice” call)
Communication loss
NO CARRIER
Hang up
ATH
OK
Saves parameters in non-
volatile memory
AT&W
OK
The configuration settings are stored
Failsafe factory reinstall using USB Binary Update Tool
In case your modem firmware is crash or can’t be flash via Serial port, Maestro Wireless can provide a binary update tool
using USB, please contact [email protected] to receive those files.
