In enum gsm48_chan_mode definitions we have: GSM48_CMODE_DATA_3k6 = 0x23, It should be 0x13 as in 3GPP TS 04.08 / 10.5.2.6. Please update in repository. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/baseband-devel/attachments/20130130/163578eb/attachment.html>