TLT-8A GPS/GSM Car Tracker Instruction Manual V1.0
17/34
Instruction for incoming call restriction off: 171+user password
For example: 1710000
Description: After success to receive instruction for incoming call restriction on (170), TLT-8Awill return
confirmation message: SET UNLIMITED MODE OFF OK. At this time, the device can only receive incoming call
from 3 prestored numbers. Incoming call from non-prestored number will be hung up without other response.
After success to receive instruction for incoming call restriction off (171), TLT-8Awill return confirmation
message: SET UNLIMITED MODE ON OK. The device can answer incoming call from any cell phone.
Note: Default setting is incoming call restriction on.
11.
11.
11.
11. Phone
Phone
Phone
Phone positioning
positioning
positioning
positioning function
function
function
function
Description: If incoming call is from one of the three prestored phone numbers and it is hung up after ringing
for 2-5 times, the device will send position information with the same format as “request for single positioning” to
the incoming call number. The information status is STATE: CALL. If non-prestored phone number calls in, it will
be hung up without other response.
12.
12.
12.
12. Emergency
Emergency
Emergency
Emergency alarm
alarm
alarm
alarm (SOS)
(SOS)
(SOS)
(SOS)
Description: Press SOS key for over 3 seconds to send positioning information with information format
returned from “request for single positioning” to the three prestored phone numbers. Information status is STATE:
SOS. At the same time, the first prestored phone number will be called. If it fails (the phone is turned off or cannot
be connected), the second and the third phone number will be called in sequence.
Note: If calling status is off, message will be sent to prestored user instead of calling him.
1
1
1
13
3
3
3.... Geo-fence
Geo-fence
Geo-fence
Geo-fence function
function
function
function
Geo-fence of the device has the following two modes: round geo-fence and square geo-fence.
Round geo-fence takes the set coordinates as center of circle and uses the set semi-diameter to determine
fence scope. Square geo-fence uses 4 known latitude and longitude points to determine a square fence.
When the function is activated, once TLT-8Asteps beyond fence scope, it will send positioning information
with the information format returned by above stated “request for single positioning” to the three prestored
numbers. Information status is STATE: OS. At the same time, the first prestored phone number will be called. If it
fails (the phone is turned off or cannot be connected), the second and the third phone number will be called in
sequence.
When TLT-8Aenters fence scope again, it will send positioning information with information format returned
from “request for single positioning” to the three prestored number immediately. Information status is STATE: RS.
At the same time, the first prestored phone number will be called. If it fails (the phone is turned off or cannot be
connected), the second and the third phone number will be called in sequence.
