Cannot send Downlink data from thingsboard to TTI

TTN Network and Services
1

Hi,

I can send uplink data from TTI cloud console to ThingsBoard by using MQTT integration.
But I am facing a problem of downlink data from thingsboard to TTI .
Downlink converter payload data is queuing in the ThingsBoard Integration, but it cannot proceed to TTI cloud.
Uplink

message in TB integration
{
“topic”: “v3/iot-controller-application@agb-iot-tti/devices/eui-24e124445d080814/up”,
“payload”: {
“end_device_ids”: {
“device_id”: “eui-24e124445d080814”,
“application_ids”: {
“application_id”: “iot-controller-application”
},
“uplink_message”: {
“f_port”: 85,
“f_cnt”: 5,
“frm_payload”: “AwAABAAABQAABgAABwEACAEB”,
“decoded_payload”: {
“gpio_in_1”: “off”,
“gpio_in_2”: “off”,
“gpio_in_3”: “off”,
“gpio_in_4”: “off”,
“gpio_out_1”: “NC”,
“gpio_out_2”: “NO”
}
}
}
Downlink

message in TB integration
{
“topic”: “v3/iot-controller-application@agb-iot-tti/devices/eui-24e124445d080814/down/push”,
“payload”: {
“downlinks”: [{
“f_port”: 2,
“confirmed”: false,
“frm_payload”: {
“fport”: 2
},
“priority”: “HIGHEST”
}]
}
}

the above downlink cannot proceed to my TTI cloud downlink queue.
My gateway is milesight UG 63
Milesight UC 300 IoT controller
I really hope for help to solve my issue.
Khu khu

2

This isn’t right - perhaps check the docs!

Not really relevant - they all work to the same spec - but what would be super extra brilliant to know is what device you are using as that speaks to the format.

Please review your formatting of your post - you can edit it with the pencil tool after you’ve posted.

3

OK. I will update it.

4

What device!!!

5

Milesight UC 300 IoT controller
Here are download queue in TTI console
{
“name”: “ns.down.data.schedule.attempt”,
“time”: “2023-11-09T09:58:28.972970329Z”,
“identifiers”: [
{
“device_ids”: {
“device_id”: “eui-24e124445d080814”,
“application_ids”: {
“application_id”: “iot-controller-application”
},
“dev_eui”: “24E124445D080814”,
“join_eui”: “24E124C0002A0001”,
“dev_addr”: “27037069”
}
}
],
“data”: {
“@type”: “type.googleapis.com/ttn.lorawan.v3.DownlinkMessage”,
“raw_payload”: “YGlwAyeDCAACFQHGTaQv”,
“payload”: {
“m_hdr”: {
“m_type”: “UNCONFIRMED_DOWN”
},
“mic”: “xk2kLw==”,
“mac_payload”: {
“f_hdr”: {
“dev_addr”: “27037069”,
“f_ctrl”: {
“adr”: true
},
“f_cnt”: 8,
“f_opts”: “AhUB”
},
“full_f_cnt”: 8
}
},
“request”: {
“downlink_paths”: [
{
“uplink_token”: “CiIKIAoUZXVpLTI0ZTEyNGZmZmVmNTU0NGESCCThJP/+9VRKEJXf4hQaDAjE2rKqBhDZkbGMAiCIvLejou8F”
}
],
“rx1_delay”: 5,
“rx1_data_rate”: {
“lora”: {
“bandwidth”: 125000,
“spreading_factor”: 7,
“coding_rate”: “4/5”
}
},
“rx1_frequency”: “923400000”,
“rx2_data_rate”: {
“lora”: {
“bandwidth”: 125000,
“spreading_factor”: 10,
“coding_rate”: “4/5”
}
},
“rx2_frequency”: “923200000”,
“priority”: “HIGHEST”,
“frequency_plan_id”: “AS_923”
},
“correlation_ids”: [
“gs:uplink:01HESR9MYK4M1GSER5ZV1JYQ8Y”,
“ns:downlink:01HESR9NBCZW0QV4ME97AZZJYH”,
“ns:transmission:01HESR9NBCEDHAG5MQV7CAXDVH”
]
},
“correlation_ids”: [
“gs:uplink:01HESR9MYK4M1GSER5ZV1JYQ8Y”,
“ns:downlink:01HESR9NBCZW0QV4ME97AZZJYH”,
“ns:transmission:01HESR9NBCEDHAG5MQV7CAXDVH”
],
“origin”: “ip-10-21-7-80.ap-southeast-2.compute.internal”,
“context”: {
“tenant-id”: “CgthZ2ItaW90LXR0aQ==”
},
“visibility”: {
“rights”: [
“RIGHT_APPLICATION_TRAFFIC_READ”
]
},
“unique_id”: “01HESR9NBCN09WVRBKAS0KTM59”
}

6

Ah, I can see that now, which is why clear formatted spaced posts are so important.

If you have your own instance, do you not have a support option as well??

7

I do not understand what do you mean?
You ask me about technical support from TTI?
There is no any technical support for me, I am a new learner of TTI and thingsboard platform by reading document and try step by step.

8

You have an instance called agb-iot-tti so you are not using the community (TTN) edition.

If you have a private instance, did you subscribe to support?

Subscribing to a support plan is not related to how much you know, it’s about your choices when you registered - if you have support, TTI can help you. If you don’t, then it’s just whatever we can figure out here.

Hopefully in the meanwhile you’ve sorted out your JSON payload!

9

Thank you for your well explanation. If so, I will try to contact technical support team or open a ticket.

10

Or you could just read the docs and make the JSON format correct!

11

Yes, I have check the document, and I tried to fix the JSON format.
I take a reference here.
ThingsBoard | The Things Stack for LoRaWAN (thethingsindustries.com)

Sincerely I do not have enough skill in writing code.
In my tti instance, Uplink payload formatter is processing well.
I think I have problem in downlink formatter encoderDownlink(input)
I read reference, I think, it is depending on the user background skills to make code modification.

</>
function encodeDownlink(input) {
return {
bytes: ,
fPort: 1,
warnings: ,
errors:
};
}

function decodeDownlink(input) {
return {
data: {
bytes: input.bytes
},
warnings: ,
errors:
}
}
</>

12

will it be possible to make your post more readable

if you post code or any text from debug use the </> tool in the post editor please

13

Ok, noted it.