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3.24 GPRS communication protocol
As soon as the IP & Port & APN are set up, the user can make a call or send SMS to tracker. The tracker
will hand up and report the coordinates to IP address.
The message format sent by tracker to IP address is as following:
Serial number + authorized number + GPRMC + GPS signal indicator + command + IMEI number +
CRC16 checksum.
For example:
090907070718,13145826175,GPRMC,070718.000,A,2234.0228,N,11403.0764,E,0.00,,070909,,,A*73,F,
, imei:354776030042714,05,50.1,F:4.11V,0,132,40512,460,01,2533,720B
GPRMC,070718.000,A,2234.0228,N,11403.0764,E,0.00,,070909,,,A*73,
GPS mode’s Original GPRMC sentences
Full GPS signal (L= No GPS signal)
the tracker’s IMEI number
Full battery power (L:3.65V=Low battery power)
The length of the GPRS string
(Remark: GSM ID can be add or delect according to customer;s requirement.)
Note:
Our gprs supports TCP or UDP protocol, so please confirm whether your GPRS webserver supports TCP or UDP
protocol before having the order.
Please use a SIM card which has GPRS function.
Pleases use the following SMS to set up YOUR website in the SMS for the tracker home+password+space+the
customer’s WEBSITE home+password+space+space (if there is no website in the SMS)
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