| 摘要 |
PROBLEM TO BE SOLVED: To provide a private branch exchange capable of distinguishing incoming history to an extension group. SOLUTION: The private branch exchange is provided with: a caller's information detection means 15a for receiving caller's information informed of from a telephone line at incoming; a group incoming table 17b capable of allowing two or more extension numbers to correspond to an extension incoming group number; and an incoming group control means 18a for extracting an extension number made to correspond to the extension incoming group number from the group incoming table 17b when an incoming destination from the telephone line is the extension incoming group number, transmitting an incoming signal to respective extensions corresponding to the extension number and storing the caller's number received by the caller's information detection means 15a into a group incoming log table 17c. COPYRIGHT: (C)2005,JPO&NCIPI
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