Warning: new_channel request not acknowledged

ChirpStack Network Server
#1

I try to configure extra channels: 8 channels from 867,1 to 868,5 are working fine.
But the GW offers 16 channels, additional from 863,1 to 864,5 MHz. If I try add one of the second eight channels I always get following warning from the loraserver:

Jan 24 09:38:29 lora-server.mgmt.komro.net loraserver[16910]: time=“2019-01-24T09:38:29+01:00” level=info msg=“new_channel request acknowledged” channel=4 frequency=867500000 max_dr=5 min_dr=0
Jan 24 09:38:29 lora-server.mgmt.komro.net loraserver[16910]: time=“2019-01-24T09:38:29+01:00” level=info msg=“new_channel request acknowledged” channel=5 frequency=867700000 max_dr=5 min_dr=0
Jan 24 09:39:24 lora-server.mgmt.komro.net loraserver[16910]: time=“2019-01-24T09:39:24+01:00” level=warning msg=“new_channel request not acknowledged” channel=7 channel_frequency_ok=false data_rate_range_ok=true frequency=863100000 max_dr=5 min_dr=0

#2

This (mac-command) is returned by the device, you can also inspect this in the LoRaWAN frame-logs of the device. LoRa Server asks the device to configure an additional channel but the device rejects this channel. You would have to look into the device firmware source or ask the device vendor why the device is rejecting this mac-command.

#3

I have seen if I enable second eight channels (in complete sum 16 channels) of the GW most of the sensors don’t accept it. And the other bad thing is ADR isn’t working any more!

#4

To me this seems to be a problem with the devices? What vendor / type are you using?

#5

Most sensors we use from ELSYS, they allow on their Config App different 8 chan sub bands but not 16 channels

#6

Following the LoRaWAN specification a device must be able to support at least 16 channels

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You might want to confirm this with ELSYS or else ask if they can update their firmware :slight_smile: