| 摘要 |
<p>PURPOSE:To reduce a memory capacity for subscriber data, to decrease data management processing load, and to facilitate a data management processing by variably causing each terminal equipment belonging to a line to commonly use a comparatively small number of logical terminal numbers for accessing a subscriber data area. CONSTITUTION:When a call from the arbitrary terminal equipment connected through a certain line to a call detecting part 2 of a digital exchange is detected by the call detecting part 2, a line number and a call number corresponding to the call are sent from the call detecting part 2 to a call control part 3. A logical terminal number registration processing part 7 to accept the line number from the call control part 3 reads a logical terminal number unoccupied/occupied table 5, registers an occupied display in registering area in which the unoccupied display is detected, and simultaneously, registers the logical terminal number corresponding to the registering area to a registering table 6 corresponding to the call number. The logical terminal number read out of the registering area of the register 6 corresponding to the call number is accessed to the subscriber data area. Thus, the memory capacity can be reduced, and the data management processing load can be reduced.</p> |
