Power saving control apparatus for simple electronic exchange system

Abstract

Power saving control apparatus and method for a simple electronic exchange system which may ensure the efficient system operation and reliably maintain the operation of the system by the usage of the electric power from an auxiliary AC power in consideration of battery power even after a main AC power is down. The power saving control apparatus for a simple electronic exchange system which is coupled to a plurality of extension telephones, each having a unit for transmitting a signal asking for setting or releasing a power saving mode and a unit for inputting passwords for each extension telephone, and operating from an auxiliary AC power when a main AC power is down, comprising: a memory for storing the passwords corresponding to the respective extension telephones; a unit for transmitting a signal requesting the input of the passwords to the extension telephones in response to a request for setting the power saving mode, which is received from an arbitrary extension telephone; a unit for checking if a password that is inputted from the extension telephone corresponds with an original password of the extension telephone previously registered in the memory; a unit for transmitting an operation limit command to the extension telephone when the two passwords are coincided with each other; and a unit for cutting off a call with the extension telephone until the power saving mode is changed for another mode when the two passwords are coincided with each other.