LISA-C200 & FW75-C200
AT commands examples - Application Note
CDMA-CS-12000
Preliminary
Page 11 of 41
4
Network registration and Idle State
4.1
CDMA registration
The module initial registration in CDMA occurs automatically.
Idle State is defined as the stage in which the CDMA terminal goes into “sleeping mode”, this behavior helps for
energy saving implementation. This will be treated as “Low Power Mode” in order to harmonize the definitions.
The module needs 30 s from the time it was powered up to allow proper registration.
The application should wait until this process is successfully finished before sending AT commands that
may interrupt the process.
4.1.1
Network Registration
Command
Response
Description
AT+CMEE=2
OK
Set verbose error messages
AT+CREG=1
OK
Turns on the unsolicited registration messages.
This step will help visualize any type of
registration performed by the module.
+CREG:4,54,1
OK
This URC confirms the module has registered with the
operator.
AT+CREG?
+CREG:1,4,54,1
OK
Reports the operator in which the module has
registered (4).
+CREG:4,54,0
OK
Module loses CDMA service and reports the URC.
+CREG:4,54,1
OK
The module re-acquires CDMA service and reports
another URC
4.1.2
Low Power Mode Registration
Forcing the module to work in Low Power Mode, will require it to send a registration to the network, this
registration communicates to the network that the module isn’t in service and that all incoming messages should
be kept until the module returns to service again.
Command
Response
Description
AT+CMEE=2
OK
Set verbose error messages
AT+CREG=1
OK
Turns on the unsolicited registration messages
This step will help visualize any type of
registration performed by the module.
AT+CREG?
+CREG:1,4,54,1
OK
Returns the System Identification number in which the
module has registered, the last digit reports a
registration in its “Home” system
LISA-C
FW-75
LISA-C
FW-75
