| 摘要 |
FIELD: telephone equipment. SUBSTANCE: multiple telephone lines are grouped into sets with given number of lines in order to set required number of groups. Said method involves detection of state of groups, then state of telephone lines in groups which state has been altered. Data about state of telephone lines are read in set of groups for detection of any group which state has been altered. State of telephone lines which belong to detected group are detected sequentially in order to detect any telephone line with altered state. Then method involves detection of direction of state alternation in telephone line, and update of data about state of telephone line in previous moment, if alternation direction in detected telephone line has been detected. EFFECT: decreased load on control equipment, decreased cost due to decreased number of serial-parallel converters. 4 cl, 7 dwg |
