I have FINALLY gotten to play with my sysmoBTS acquired many months ago, and updated to the latest packages using okpg, and am running a NITB.
GSM850 test setup in open mode A5/0, and I can SMS and call between devices. However, there is no audio, and BTS console logs reports many repeats of the following during an established call. <0006> tch.c:601 (bts=0,trx=0,ts=7,ss=0) Rx Payload Type EFR is unsupported <0006> tch.c:601 (bts=0,trx=0,ts=7,ss=0) Rx Payload Type EFR is unsupported <0006> tch.c:601 (bts=0,trx=0,ts=7,ss=0) Rx Payload Type EFR is unsupported >From the code @ https://github.com/osmocom/osmo-bts/blob/master/src/osmo-bts-sysmo/tch.c line:583 I deduct that " #if defined(L1_HAS_EFR) && defined(USE_L1_RTP_MODE) " is why I'm seeing this message logged, but it seems to be #define... Any pointers, ideas ? This doesn't seem like a configuration thing, but a compilation time option? I'd have expected that EFR is fully supported? osmo-bts.cfg snippet ------------------------------ bts 0 band 850 ipa unit-id 1801 0 oml remote-ip 127.0.0.1 rtp jitter-buffer 100 paging queue-size 200 paging lifetime 0 trx 0 clock-calibration 603 trx-calibration-path (null) clock-source ocxo uplink-power-target -75 min-qual-rach -5 min-qual-norm -5 Regards, Roelf.
