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Teltonika Data Sending Protocols (view source)
Revision as of 18:18, 10 November 2023
, 18:18, 10 November 2023no edit summary
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='''<big>CODEC 15</big>'''=
*'''<big>Protocol Overview</big>'''
Codec 15 is based on Codec12 protocol. Codec15 is original Teltonika protocol for device->server communication over GPRS messages.
Codec15 is available in RS232 modes:
1. TCP/UDP Ascii
<br>2. TCP/UDP Binary
<br>3. TCP/UDP Ascii Buffered
<br>4. TCP/UDP Binary Buffered
*'''<big>Structure of Codec 15 messages</big>'''
{| class="nd-othertables_2" style="width:100%;"
|+
! rowspan="1" style="width:10%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |0x00000000 (Preamble)
! rowspan="1" style="width:5%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |Data Size
! rowspan="1" style="width:10%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |0x0F (Codec ID)
! rowspan="1" style="width:10%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |Command quantity
! colspan="1" style="width:10%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |Message type
! rowspan="1" style="width:14%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |Command size + timestamp + imei
! rowspan="1" style="width:5%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |Timestamp
! rowspan="1" style="width:5%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |IMEI
! rowspan="1" style="width:10%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |Command
! rowspan="1" style="width:10%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |Command quantity
! rowspan="1" style="width:10%; border-bottom: 2px solid #0054A6; vertical-align: middle; text-align: center;" |CRC - 16
|-
| style="vertical-align: middle; text-align: center;" |4 bytes
| style="vertical-align: middle; text-align: center;" |4 bytes
| style="vertical-align: middle; text-align: center;" |1 byte
| style="vertical-align: middle; text-align: center;" |1 byte
| style="vertical-align: middle; text-align: center;" |1 bytes
| style="vertical-align: middle; text-align: center;" |4 byte
| style="vertical-align: middle; text-align: center;" |4 bytes
| style="vertical-align: middle; text-align: center;" |8 bytes
| style="vertical-align: middle; text-align: center;" |X bytes
| style="vertical-align: middle; text-align: center;" |1 bytes
| style="vertical-align: middle; text-align: center;" |4 bytes
|-
|}
*'''<big>Structure explanation</big>'''
'''Preamble''' - four zero bytes.
<br>'''Data size''' - size is calculated from codec id(0x0F) field to the second command quantity field.
<br>'''Codec ID''' - in Codec 15 it is always 0x0F.
<br>'''Command quantity''' - a number which defines how many commands are in the packet.
<br>'''Message type''' - this value is configurable in RS232 settings box.
<br>'''Command size + Timestamp + IMEI''' - it is equal to size of payload + size of timestamp + size of imei.
<br>'''Timestamp''' – data record creation time in seconds(Unix timestamp).
<br>'''IMEI''' - send as HEX value. Example if device IMEI is 123456789123456 then IMEI data field will contain 0x0123456789123456 value.
<br>'''Command field''' - actual received data.
<br>'''Command quantity''' - a number which defines how many commands are in the packet.
<br>'''CRC field''' - calculated from Codec ID to the Second Number of Data.
*'''<big>Codec 15 examples</big>'''
Device sends messag „Hello\n“ via GPRS Codec15:
000000000000001b0f010b00000013654b65a4012345678912345648656c6c6f210a01000093d6
Parsed:
<br>'''Preamble''': 0x00000000
<br>'''Packet Length''': 0x0000001b
<br>'''Codec''': 0x0f
<br>'''Quantity of commands''': 0x01
<br>'''Command type''': 0x0b
<br>'''Command size''': 0x000000013
<br>'''Timestamp''': 0x654b65a4
<br>'''IMEI''': 0x0123456789123456 (HEX string)
<br>'''Command''': 0x48656c6c6f210a (HEX of Hello\n)
<br>'''Quantity of commands''': 01
CRC: 0x 000093d6
The algorithm to calculate CRC is CRC-16 (also known as CRC-16-IBM). All the fields from codec ID to second command/response quantity field are used to calculate CRC.
='''<big>24 Position SMS Data Protocol</big>'''=
='''<big>24 Position SMS Data Protocol</big>'''=
