| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-line operation phone system that applies a multi- line incoming call to PHS and multi-functional phones for a business office. SOLUTION: In the multi-line operation phone system provided with multi- functional phones 3-1, 3-2 in extension connection to a PBX 2, cordless connectors (BSS) for business office 4-1, 4-2, and digital cordless phones 5-1, 5-2 in wireless connection to the BSS, when an incoming call arrives in the multi-function phone 3-1 to which a main channel number 2000 is set via the PBX 2 from a trunk line, a relay line or an extension, the incoming call reaches the multi-function phone 3-2 and the digital cordless phones 5-1, 5-2 to which slave channel numbers 2001, 3000, 3001 corresponding to the main channel number 2000 are respectively set in a way of multi-line based on multi-line information stored in a memory 7 of the PBX 2.
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