User's Manual

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Then you can try to use cellular phone or SMS gateway to send a SMS message to
the CAREU U1 PLUS device. Send a SMS message -->"AT$MODID?"
Device will response:
$MODID=101000001
OK
This proves a successful mobile phone SMS connection.
2.WirelessConfiguration
Set GPRS servers by using the folloiwng commands:
AT$APN=internet,username,password (APN=internet, Username=username,
Password=password) OK
AT$HOSTS=1,0,60.148.19.10,6000
(Server IP address = 60.148.19.10 and Port number =6000) OK
AT$RETRY=5,10 (Message retry settings) OK
AT$IPTYPE=1 (Using TCP/IP mode) OK
AT$GPRSEN=1 (GPRS enable) OK
AT$HB=60,1 (Heartbeat setting) OK
Please refer to the CAREU U1 PLUS Protocol Document for more command details.
3.3 GPS Tracking Configurations
After the device communication settings are done, the remote GPS tracking is ready
to function. The setting of GPS tracking can be done by using AT$PDSR command.
For example,
AT$PDSR=1,30,0,0,2,0,0,1,0 (Tracking through GPRS by time interval 30 seconds)
OK