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* Unable to catch at least 15 valid Main tracker packets, an alarm record will be generated with AVL ID 1153. After '''delay timeout (s)''' is reached, device will send that generated record to the server and enable other record generation/sending (Periodic and Eventual record).
* Unable to catch at least 15 valid Main tracker packets, an alarm record will be generated with AVL ID 1153. After '''delay timeout (s)''' is reached, device will send that generated record to the server and enable other record generation/sending (Periodic and Eventual record).
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[[File:Backup feature logic.png|1000px]]
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==Limitations==
==Limitations==
Since the feature relies on Bluetooth functionality, all of the existing Bluetooth limitations are applied.
Since the feature relies on Bluetooth functionality, all of the existing Bluetooth limitations are applied.
One of such limitations is the fact that FMB devices only store up to 100 BLE devices per scan. This means, that if there are more than 100 BLE devices in the surrounding environment, backup tracker being able to catch main tracker packets in time gets reduced.
One of such limitations is the fact that FMB devices only store up to 100 BLE devices per scan. This means, that if there are more than 100 BLE devices in the surrounding environment, backup tracker being able to catch main tracker packets in time gets reduced.
==Parameter ID's==
==Backup feature logic==
[[File:Packet format.jpg]]
{| class="wikitable"
|+
! rowspan="2" style="width: 150px; background: #003475; color: white;" |'''Parameter ID'''
! rowspan="2" style="width: 150px; background: #003475; color: white;" |'''Name'''
! rowspan="2" style="width: 100px; background: #003475; color: white;" |'''Data Type'''
! colspan="3" style="width: 150px; background: #003475; color: white;" |'''Value range'''
! rowspan="2" style="width: 250px; background: #003475; color: white;" |'''Description'''
|-
! style="width: 75px; background: #003475; color: white;" |Min
! style="width: 75px; background: #003475; color: white;" |Max
! style="width: 75px; background: #003475; color: white;" |Default
|-
!style="text-align: center; vertical-align: center;" |70200
|style="text-align: center; vertical-align: center;" |FMB Tracker mode
|style="text-align: center; vertical-align: center;" |Uint8
|style="text-align: center; vertical-align: center;" |0
|style="text-align: center; vertical-align: center;" |2
|style="text-align: center; vertical-align: center;" |0
|style="text-align: center;" |0 - Disabled; <br> 1 - Main; <br> 2 - Backup.
|-
!style="text-align: center; vertical-align: center;" |70201
|style="text-align: center; vertical-align: center;" |FMB Tracker mode
|style="text-align: center; vertical-align: center;" |String
|style="text-align: center; vertical-align: center;" |-
|style="text-align: center; vertical-align: center;" |15
|style="text-align: center; vertical-align: center;" |-
|style="text-align: center;" |IMEI of the tracker which is configured as a main tracker
|-
!style="text-align: center; vertical-align: center;" |70202
|style="text-align: center; vertical-align: center;" |Update frequency
|style="text-align: center; vertical-align: center;" |Uint16
|style="text-align: center; vertical-align: center;" |60
|style="text-align: center; vertical-align: center;" |65535
|style="text-align: center; vertical-align: center;" |120
|style="text-align: center;" |Frequency, at which backup tracker should start scanning for Main Tracker BLE packets.
|-
!style="text-align: center; vertical-align: center;" |70203
|style="text-align: center; vertical-align: center;" |Delay timeout
|style="text-align: center; vertical-align: center;" |Uint16
|style="text-align: center; vertical-align: center;" |0
|style="text-align: center; vertical-align: center;" |65535
|style="text-align: center; vertical-align: center;" |0
|style="text-align: center;" |Delay, after which backup tracker starts sending records after an alarm occurs
|-
|}