fixeria has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-bts/+/33069 )

Change subject: trx TCH DL: transmit invalid speech frames instead of dummy FACCH ......................................................................

Patch Set 2:

(1 comment)

File src/osmo-bts-trx/sched_lchan_tchf.c:

https://gerrit.osmocom.org/c/osmo-bts/+/33069/comment/320f8fa7_2f92e7c3 PS1, Line 500: what is the correct BTS Tx behavior for frame : * gaps in TCH/AFS

Please read the comment I just added under that ticket. […]

I just suggested a possible solution seeing a FIXME comment in your patch. It's not a high priority for me either, and unfortunately I don't have access to my nanoBTS units anymore to confirm that it behaves as I described. This can be easily checked by establishing a silent call from osmo-msc and looking at the Um interface captures.