ISDN_TIMER_02SEC  248 include/linux/isdn.h #define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
ISDN_TIMER_02SEC  249 include/linux/isdn.h #define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
ISDN_TIMER_02SEC  250 include/linux/isdn.h #define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))