Telephone exchange and communication terminal

Details Telephone exchange and communication terminal Telephone exchange and communication terminal

H - Electricity

04

M

H04M 3/22 (2006.01) H04L 12/66 (2006.01) H04M 11/06 (2006.01) H04Q 3/64 (2006.01)

Patent

CA 2533378

A telephone exchange is connected to a communication terminal installed in a predetermined region through a network. The telephone exchange includes: a reference time acquisition unit that acquires a reference time; a storage unit that stores time difference information concerning a time difference between a local standard time of the standard time in the predetermined region and the reference time acquired by the reference time acquisition unit; a local time calculation unit that calculates a local time of the time in the predetermined region based on the reference time obtained by the reference time acquisition unit and the time difference information stored in the storage unit; and a communication unit that transmits the local time calculated by the local time calculation unit to the communication terminal.

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