TTN v3 Class C support

End Devices (Nodes)
1

Hi

I was wondering with v3 support, if I wipe my gateway firmware and switch from chirpstack back to TTN v3, can I now use Class C?

And are there limitations?

I have a gate that I need to be able to open randomly (but straight away on command) throughout the day but probably not more than 5 times a day if that.

Thank you!

2

I can confirm that class C works in TTS CE (TTN V3). My Dragino LT-22222 and LT-33222 work both in Mode C. If I send a message from the V3-console to the Draginos e.g. to switch the relays, the relays react within abt. 1 second.

2 Likes
3

The limitations are given e.g. by the FUP - 10 downloads per device and day.

1 Like
4

I see. So after 10 downlinks or uplinks it will stop working completely.

5

No, but everyone in your area using TTS CE will start looking for the guy who is making a mess of the airwaves.

And, and I really hope they do, at some point, TTI may enforce the FUP - at least for downlinks.

The alternative is for you to use a paid for TTS.

Nothing in the reception or transmissions of LoRaWAN are guaranteed - particularly if someone is sending downlink a lot in an area.

If you are facing the gate in your car, there are better solutions. If you are in the house <500m away, there are better solutions.

6

What you need to plan for its that there is no guarantee that the downlink will be received.

So if, maybe because of range issues, a download is sent multiple times before being received the fair useage policy still limits you to 10 a day.

7

Hi wolfp, I am trying to get a Milesight UC300 to work in class ā€˜Cā€™ mode on TTN v3, but no success so far, TTN insists on queueing the downlink, even though I have ensured that both the UC300 is in class ā€˜Cā€™ mode and identified that in TTN. There must be comething I am missing. I do hope you can help Wolfp. Chris

8

@ukiotltd it has not so much to do with the gateway (the UC300 is definitely good for Class C), but most of it is down to the end-device. What device do you use? How did you configure that device on TTN, and can you verify that your device is operating in Class C?

9

What buttons do you press to do this?