You might of read my post about the card not hanging up after a call on a BT Line Read it Here!. Well Ive found a fix. edit wcfxs.c in your favourite editor and edit the line "#define BATT_DEBOUNCE* and change it from 64 to 24. Then edit the line #define BATT_THRESH and change it from the default value to 3. BATT_DEBOUNCE basically means its the delay that the driver will wait once the hangup happens before actually sending the hangup signal to asterisk the default of 64 is far to long as on a BT line it tends to be around 24ms.