EM7565 DARCONFIG Band48

I am trying to set the transmitter on for B48, and my command crashes the modem (it resets). Is this feature working?

The three commands that I enter are:

at!entercnd= <- I’m using the correct password.
at!daftmact
AT!DARCONFIG=0,3,96,55990,3

The above crashes the modem. I also tried replacing the ‘96’ with ‘48’. This also fails.

Is there a command sequence that properly keys up the transmitter?