In-Call Handover not working?

Hello List, I've noticed that In-Call Handover doesn't work on my Nokia InSites. OpenBSC attempts the handover but as far as I can tell the device never moves to the new channel.  E.g. <000d> handover_decision.c:203 (bts=2,trx=0,ts=1): Cell on ARFCN XXX is better: <000d> handover_logic.c:97 (old_lchan on BTS 2, new BTS 1) Starting handover <0004> abis_rsl.c:1059 (bts=1,trx=0,ts=1,ss=0) CHANNEL ACTIVATE ACK <000d> handover_logic.c:206 handover activate ack, send HO Command <0004> abis_rsl.c:1032 (bts=1,trx=0,ts=1,ss=0) HANDOVER DETECT access delay = 0 <0000> abis_rsl.c:1481 (bts=1,trx=0,ts=1,ss=0) SAPI=0 ESTABLISH INDICATION <0000> abis_rsl.c:1481 (bts=1,trx=0,ts=1,ss=0) SAPI=0 DATA INDICATION <0003> gsm_04_08.c:1196 HANDOVER COMPLETE cause = Normal event <000d> handover_logic.c:263 Subscriber AAABBBC00000ZZZZ HO from BTS 2->1 on ARFCN YYY->XXX <0000> chan_alloc.c:421 (bts=2,trx=0,ts=1,ss=0) starting release sequence Here it seems to get measurement results, because the device is still on BTS2 (never moved?) <0004> abis_rsl.c:967 (bts=2,trx=0,ts=1,ss=0): MEAS RES for inactive channel <0004> abis_rsl.c:967 (bts=2,trx=0,ts=1,ss=0): MEAS RES for inactive channel <0004> abis_rsl.c:967 (bts=2,trx=0,ts=1,ss=0): MEAS RES for inactive channel After sometime things start to go crazy and the log fills up with messages like: illegal trau (C1-C5) 00 00 01 01 00 Thanks, Gus