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Codec (view source)

Revision as of 10:33, 27 April 2020

1 byte added , 10:33, 27 April 2020

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*'''<big>FM firmware requirements</big>'''

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Supported GPRS commands on each device depending on the firmware version. For available GPRS commands on each device, please refer to the table below.

{| class="nd-othertables" style="width:75%;"

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The following figure shows how the GRPS command session is started over TCP.

[[File:Codec12.png|1150px]]

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First, the Teltonika device opens ~~GPthe RS~~ session and sends AVL data to the server (refer device protocols). Once all records are sent and correct sent data array acknowledgment is received by device then GPRS commands in Hex can be sent to the device.

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First, the Teltonika device opens the GPRS session and sends AVL data to the server (refer device protocols). Once all records are sent and correct sent data array acknowledgment is received by device then GPRS commands in Hex can be sent to the device.

The ACK (acknowledge of IMEI from server) is a one-byte constant 0x01. The acknowledgment of each data array send from the device is four bytes integer – the number of records received.

Note, that the GPRS session should remain active between device and server, while GPRS commands are sent. For this reason, active datalink timeout (global parameters in device configuration) is recommended to be set to 259200 (maximum value).

Gabrielius.jankauskas

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