RAI feature with LTE-M and MQTT

[Frikkie Badenhorst]

Hi there,

We are currently conducting tests on the nRF9160 using the LTE Serial Modem app. We do however have issues testing the RAI feature on the device with an LTE-M network. The network does indeed support the RAI feature, as we have been able to test this using different devices.

According to the AT commands reference manual, the %XRAI command is not supported in a LTE-M network? Is that indeed the case?

We then refer to the %RAI (8.17 in AT commands reference manual) and %REL14FEAT (8.18). However, we are not able to use any of these 2 features? We continuously get the "ERROR" response when trying to active the REL 14 features. We have set CFUN to 0,1 and 4 to attempt this. 

Can you please assist with instructions on how to enable this feature on a LTE-M network so that we can test it? 

This is very urgent as we need to decide on which hardware we will use in our product today/Monday.

[Albrecht Markus Schellenberger]

Thanks a lot!

Yes, modem firmware 1.3.0 is available now. But please be aware that this firmware version is not backwards compatible with firmware 1.2.3. or older versions.

I have contacted our modem team and await their response.

Regards,

Markus

[Frikkie Badenhorst]

Thanks Markus, we will test 1.3.0 in the meantime. 

A bit of topic - I have also created a ticked here regarding max transmit power. It is apparently assigned to a support engineer, but haven't received a response yet. Would you be able to assist with this or check internally whether someone is one this?

We need to be sure that all the devices that we are testing are transmitting at the same power, otherwise we are not really comparing apples with apples.