| 摘要 |
PURPOSE:To solve the diaadvantage of release of the absence transfer service by dialing or the confusion of a subscriber due to forgotten release by checking the service in a call connection processing and applying release processing when the absence transfer is registered. CONSTITUTION:When an extension 1 makes a call, a main controller 3 uses a data memory 4 via a channel switch group 2 to check the absence transfer service function. As a result, when the absence transfer is registered, the channel switch group 2 is controlled to transmit the state to the absence transfer registration release state and the extension 1 listens to a dial tone by a dial tone function section. |
