AS923 DWELL_TIME disable v4 4.5.2

ChirpStack (v4) Setup and configuration
1

Is there anyone able to disable the DWELL_TIME on AS923?
I am using 4.5.2. Thanks!

2

ChirpStack v4 does not have Dwell time setting.

So it is up to the node with default setting.

3

well noted with thanks

4

@brocaar Hi, is there any way we can disable Dwell Time in ChirpStack.

RAK modules have Dwell Time enabled and have no API to disable Dwell Time.

So if we can disable DwellTime for AS923_x, RAK module will be set to disabled DwellTime from ChirpStack.

I tried to set in ChirpStack.toml.
But it doesnt seem to work.

uplink_dwell_time_400ms=false
downlink_dwell_time_400ms=false

Thanks a lot.

5

Could you create a GitHub issue for this so I can look into this? The forum is not a good place for me to keep track of feature requests :slight_smile:

1 Like
6

Ok, I will do it.
Thanks a lot.

7

It already works for me at 4.6.0, but you need to specify the 3 values: downlink and uplink dwell time setting, and the maximum transmission uplink power.

Missing any of these, prevented it from working.

These settings do not seem documented for V4, but exist in the source code.

8

Thanks a lot for your hint.
Let me try.

9

For posterity, here are the sections I used. I was very busy at work, so I didn’t include these snippets earlier.
They were combined from some other posts on this forum:

    # Enforce 400ms dwell time.
    #
    # Some regions require the configuration of the dwell time, which will
    # limit the time-on-air to 400ms. Please refer to the LoRaWAN Regional
    # Parameters specification for more information.
    #
    # When configured and required in the configured region, ChirpStack Network Server will
    # use the TxParamSetup mac-command to communicate this to the devices.
    uplink_dwell_time_400ms=false
    downlink_dwell_time_400ms=false

    # Uplink max. EIRP.
    #
    # This defines the maximum allowed device EIRP which must be configured
    # for some regions. Please refer the LoRaWAN Regional Parameters specification
    # for more information. Set this to -1 to use the default value for this
    # region.
    #
    # When required in the configured region, ChirpStack Network Server will use the
    # TxParamSetup mac-command to communicate this to the devices.
    # For regions where the TxParamSetup mac-command is not implemented, this
    # setting is ignored.
    uplink_max_eirp=20

To explain the values shown here: I am in Singapore, where there is no 400ms dwell time restriction for both uplink and downlinks. And the maximum transmission power for end units is 20dBm.

10

May be last time, I missed this.
Thanks a lot for sharing.
I appreciate it.