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→Codec 12 Nebaigta
Supported GPRS commands on each device depend on firmware version. For available GPRS commands on each device, please refer to Table1 FM firmware requirement “SMS over GPRS” means that all standard SMS commands text can be sent to device via GPRS in Codec12 format.
Supported GPRS commands on each device depend on firmware version. For available GPRS commands on each device, please refer to Table1 FM firmware requirement “SMS over GPRS” means that all standard SMS commands text can be sent to device via GPRS in Codec12 format.
{| class="wikitable"
|-
!style="background: black; color: white;"| Device !!style="background: black; color: white;"| SMS over GPRS !!style="background: black; color: white;"| SMS over GPRS via UDP !!style="background: black; color: white;"| Special Codec12 GPRS commands
|-
| FM11YX || Available since base firmware 01.11.XX || Since base firmware
1.26.00
|| Available in FM1100 and FM1110 special firmware version 12.XX.XX*
|-
| FM12YX || Available since base firmware 01.03.XX || - || Available in FM12YX special firmware 09.XX.XX*
|-
| FM10YX || Available since base firmware 00.03.XX || - || Available since base firmware 00.06.XX and later versions**
|-
| FM3400 || Available since base firmware 01.01.XX || - || -
|-
| FM36YX || Available in base firmware || Since base firmware 01.06.01 || -
|-
| FM5300 || Available in all firmware versions || - || Available in all firmware versions**
|-
| FM5500 || Available in all firmware versions || - || Available in all firmware versions**
|-
| FM2200 || Not available || - || Special firmware version 07.XX.XX*
|-
| FM4200 || Not available || - || Special firmware version 42.XX.XX*
|-
| FM63YX || Available in all firmware versions || Since base firmware 00.02.19 || Available in all firmware versions**
|-
| FMB9YX || Available in base firmware || Available in base firmware || -
|-
| FMB0YX || Available in base firmware || Available in base firmware || -
|-
| FMB1YX || Available in base firmware || Available in base firmware || -
|-
| FMB6YX || Available in all firmware versions || Since base firmware 00.02.19 || Available in all firmware versions**
|-
| FMA1YX || Available in base firmware || Since base firmware 1.26.00 || Available in special firmware version 12.XX.XX*
|-
| FMA2YX || Available in base firmware || Available in base firmware || -
|}
<small>Table 1. FM firmware requirement</small>
'*' - supported special commands are listed on special firmware description. Please contact Your Teltonika sales manager for more details;
'**' - supported special commands are listed on device user manual, chapter “GPRS Commands”
*'''GPRS command session'''
Following figure shows how GRPS command session is started over TCP.
[[Image:wq.png|wq.png]]
First FM opens GPRS session and sends AVL data to server (refer FM protocols). Once all records are sent and correct sent data array acknowledgment is received by FM then GPRS commands in Hex can be sent to FM.
The ACK (acknowledge of IMEI from server) is a one byte constant 0x01. The acknowledgement of each data array send from FMXXXX is four bytes integer – number of records received.
Note, that GPRS session should remain active between FM and server, while GPRS commands are sent. For this reason active datalink timeout (global parameters in FMXXXX configuration) is recommended to be set to 259200 (maximum value).
*'''General Codec12 message structure'''
== <big>Codec 13 Nebaigta</big> ==
== <big>Codec 13 Nebaigta</big> ==