> After receiving an Assignment Command for a hopping TCH/F I
> call l1ctl_tx_dm_est_req_h1() with all necessary parameters

IIRC, the L1 in burst_ind mode doesn't support changing channel assignement without first resyncing to the C0.

So you can not do BCCH -> SDCCH -> TCH
you have to do BCCH -> SDCCH -> BCCH (wait for sync) -> TCH

It's a limitation of the current public code in burst_ind mode.

> and tch_mode GSM48_CMODE_SPEECH_V1 or _EFR.

tch_mode is useless for burst_ind

Cheers,

Sylvain