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    DEVICE AND METHOD FOR AUTOMATIC INITIALIZATION OF A MULTI-MODE INTERFACE CONTROLLER
    6.
    发明授权
    DEVICE AND METHOD FOR AUTOMATIC INITIALIZATION OF A MULTI-MODE INTERFACE CONTROLLER 有权
    DEVICE AND METHOD FOR自动初始化多模接口控制

    公开(公告)号：EP1101366B8

    公开(公告)日：2006-03-08

    申请号：EP99924461.9

    申请日：1999-05-20

    申请人： Siemens Communications, Inc.

    发明人： COLE, Steven, R.

    IPC分类号： H04Q3/60

    CPC分类号： H04Q3/60

    摘要： A method of automatically selecting a mode of operation during an initialization sequence of a multi-mode signal controller includes selectively enabling and disabling signal reception and signal driving capabilities and includes monitoring the remaining signal traffic to determine the position of the controller along a communication path. In the preferred embodiment, the signal controller is one of at least two identical signal controllers along a single communication path. For example, the controllers may be components at opposite sides of a telecommunications link of a PBX or other telecommunication system. The structurally identical controllers perform mirror image operations when the controllers are properly initialized to restrict the controllers to different modes of operation. In the initialization sequence for a particular signal controller, the signal reception is monitored to determine whether the controller is receiving a known pattern of system control, such as a universally applied clock signal. Detection of the system control signal clearly identifies the controller as being on the same side of the telecommunications link as the source of the system control signals. On the other hand, the telecommunications link may be monitored for communication signals from the other signal controller. Detection of the communication signals identifies the initializing controller as being on the opposite side of the telecommunications link from the source of the system control signals.