ACK and stats settings on Kerlink gateways

[betienneUCA]

Hello !
I have a question about SPF settings :

I am using a Kerlink "LoRa IoT Station 868" using SPF.
In the "global_conf.json" file, I can find these 2 lines :

                "keepalive_interval": 10,
                "stat_interval": 30,

As I understand, the first one allows gateways to send keepalives to the server every 10 seconds, and the second one a statistic packet every 30.
I have tried to change the intervals so the gateway could send much less data (I set them both to 14400, every 4 hours) as I am transmitting through M2M GSM and do not have much credit available.

But by doing so, the packet forwarder either crashes or is only transmitting Join Requests but never actual data.

Do these values have limits ? And what are their actual impact on data reception ?
By advance, thank you very much,

Respectfully,
Etienne

[rbaldwin13]

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