WP76xx command DALSWAVEFORM

Hi ,

I have a question about command: !DALSWAVEFORM

AT!DALSWAVEFORM=<waveform>[,<PUSCH_RBs>,
<PUCCH_RBs>,<PUSCH_start_RB_index>]

As I know waveform is decided to set LTE PUSCH or PUCCH.

PUSCH_RBs = means number of PUSCH resource blocks

how many bandwidth when I set PUSCH_RBs =12 ? (I guess is about 2.4)
What are the implications of PUCCH_RBs?
What does PUSCH_start_RB_index mean?