Hello @Diego8663

that is a good question. While *MATREADY: 1 is listed as unsolicited result code in the SIM7020 AT document the description column is empty. And searching the Internet doesn’t really help either.

That said, my best guess would be that it means something like ‘Module AT READY’ or in other words the module is ready to accept AT commands.

Thanks
Felix

They are still running, so this seems to be the (temporary) solution.

@MeneerJacco you might check this entry as well, which points to a small web page doing the calculation work reg. at+cpsms command.
https://forum.iotcreators.com/topic/642/psm-calculation-tool-t3412-t3324-value-decoding?_=1622307153602

Be aware, that entering the value via at+cpsms is only a request towards the network. The network decides if your values are committed. To check the network reply, use

and check the values via:

You can paste the reply in the above mentioned web page as well to get the values ‘decoded’.
My recommendation: set the active time (T3324) to a minimum and use the ‘RAI’ - release assistance indicator after sending data to shorten the RRC connected mode to a minimum. Then your device will enter PSM faster.
BR,
Markus