| 摘要 |
PURPOSE:To reduce maintainer's man-hour and to prevent erroneous adjustment due to a misoperation by setting the data/time information from ISDN to a clock circuit in a private branch exchange. CONSTITUTION:An ISDN interface means 2 generates and extracts the various sorts of message and information transferred between a private branch exchange and ISDN 1 connected with the private branch exchange, a time setting means 3 sets the data/time information extracted from the various sorts of information through the ISDN interface means 2 to a clock circuit 4. |
