Create your own protocol .. try to see how wide is the channel and then try some solution like sending pulses in morse code whith location .. or translate nmea protocol into pulses .. the thing is u will need some kind of device made speciaally for your need's .. I don't known if it's possible to send data whith an old modem 33 kbps or less .. it depend's on the bandwith of the channel but that's an other option ...but it'll hace to be half duplex and the talk/no talk action will be hard yto implement .... a verry simple option is ..... a code at the beggining .. s eries of pulses separated in thime so that the machiine knowns the truck is triing to communicate .. and then send each numbres of the lat and long. in pulses ...a specific time .. it's slow and noise sensitive but it's something ...
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I am very new in the telecom field and so interested on BTS. Please I
would like to get all the materials and data manual with BTS installing
and commissioning for GSM and WCDMA........
if you have document please send through the below email address; Thanks
The T5720 user manual does not list the TPL codes possible in the radio. However, they are the standard list, with zero being "open squelch" (no code). Here is a link to a Motorola manual which has a list of the PL codes in order on page 43. http://www.thekidshuttle.com/ABC%20Docs/CP100_Manual.pdf
for 5720 - open two screws below battery compartment. and two screws are under the front false faceplate. Pull out the face plate (from the top) and unscrew the two screws above the display.
you have it dismanteled !