User's Manual

CAREU U1 Lite(WR) Vehicle Tracker User
Guide
Chapter 3
17
3.6 Communication Settings
The CAREU U1 Lite(WR) vehicle tracker communicates with your control center by
either SMS or GPRS (TCP/UDP). Before the device is installed into a vehicle,
communication parameters should be set.
1. SMS Configuration
Use AT$SMSDST command to set a SMS control center phone number or short code.
For example, if the SMS control center phone number is [phone], the
AT$SMSDST command to be issued into HyperTerminal should be:
AT$SMSDST=[phone]
OK
Then you can try to use cellular phone or SMS gateway to send a SMS message to
the CAREU U1 Lite(WR) device. Send a SMS message --> "AT$MODID?"
Device will response:
$MODID=101000001
OK
This proves a successful mobile phone SMS connection.
2. GPRS Configuration
Set GPRS servers by using the folloiwng commands:
AT$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 Lite(WR) Protocol Document for more command details.