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6.18.1 Send SMS apspace+cell phone number to set the SMS
center.
If the SMS center is set up, when an authorized number sends SMS to the tracker, the
tracker will reply a SMS with Geo-info & authorized number to SMS center.
6.18.2 Send SMS noapassword to cancel the SMS center.
Response SMS format: authorized Geo-info
6.19 GPRS setting
In order to use GPRS function, the user needs to set IP, Port and APN ( access point
name ) by either cell phone, or our PC software.
6.19.1 Set an IP address and port:
Setup: Send SMS space+IP space+port.
If setup successful, the tracker will reply SMS adminip ok
Cancel: Send SMS no123456
6.19.2 Set APN
Setup: Send SMS apn+space+specify apn.
If setup successful, the tracker will reply SMS “APN ok”.
P.S. The old APN will be invalid when you set a new APN.
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 the telephone and report the coordinates to IP address.
The message sent by tracker to IP address is as following:
Serial authorized GPRMC + GPS signal ind c
IMEI CRC16 checksum.
For example, it will send GPS coordinates as below illustrated
