Telecommunications management and control apparatus
    1.
    发明授权
    Telecommunications management and control apparatus 失效
    电信管理和控制设备

    公开(公告)号:US5638428A

    公开(公告)日:1997-06-10

    申请号:US389289

    申请日:1995-02-16

    IPC分类号: H04N1/00 H04M11/00

    CPC分类号: H04N1/00281

    摘要: A data communication control apparatus for use in association with a facsimile transmission device, comprising: a memory for storage of telephone number data, private network protocol information and telephone line communicable data; an off-hook detector for determining when the facsimile device is placing an outgoing call; a controller for controlling the outgoing call in response to an instruction from the off-hook detector, the controller comparing the number of the outgoing call with the telephone number data in the memory and determining whether that number is served by the private network; and a fax-tone detector in association with the off-hook detector and memory for determining the time-out parameter of the facsimile device placing the outgoing call; wherein when the outgoing call is placed by the facsimile device, the off-hook detector instructs the controller which first determines whether or not the outgoing call is a long distance number and, if so, whether the long distance area code is serviced by the private network and, if so determined, the call is diverted to the said private network where if the call is not connected to the destination facsimile device within the time out period of the originating facsimile device, the call is diverted to the private network's store and forward facility.

    摘要翻译: 一种与传真发送装置相关联使用的数据通信控制装置,包括:用于存储电话号码数据,专用网络协议信息和电话线路可通信数据的存储器; 用于确定传真设备什么时候正在发出呼出呼叫的摘机检测器; 控制器,用于响应来自摘机检测器的指令来控制呼出呼叫,所述控制器将所述呼出呼叫的数量与所述存储器中的电话号码数据进行比较,并确定所述号码是否由所述专用网络服务; 以及与摘机检测器和存储器相关联的传真音检测器,用于确定放置呼出呼叫的传真设备的超时参数; 其中当通过传真设备放置呼出呼叫时,摘机检测器指示控制器首先确定呼出呼叫是否是长距离号码,并且如果是,长途区号是否由私人服务 网络,并且如果确定了,则呼叫转移到所述专用网络,其中如果在始发传真设备的超时期间呼叫未连接到目的地传真设备,则呼叫被转移到专用网络的存储并转发 设施。

    Security system using call display
    2.
    发明授权
    Security system using call display 失效
    安全系统使用呼叫显示

    公开(公告)号:US5511109A

    公开(公告)日:1996-04-23

    申请号:US130502

    申请日:1993-10-01

    IPC分类号: H04M11/04 H04M11/00

    CPC分类号: H04M11/04

    摘要: An improved alarm security system is disclosed which provides caller identification information when an alarm panel completes a telephone communication with a central computer. Such information is automatically provided by the telephone network upon initiation of a telephone communication. The central computer can use this information alone or in combination with other information received from the alarm panel to improve reliability and provide a more effective security system.

    摘要翻译: 公开了一种改进的警报安全系统,其在警报面板完成与中央计算机的电话通信时提供呼叫者识别信息。 这种信息在电话通信开始时由电话网络自动提供。 中央计算机可以单独使用这些信息或者结合从报警面板接收的其他信息来提高可靠性并提供更有效的安全系统。

    Oil ring design
    3.
    发明授权
    Oil ring design 失效
    油环设计

    公开(公告)号:US4053165A

    公开(公告)日:1977-10-11

    申请号:US641372

    申请日:1975-12-17

    IPC分类号: F16J9/06

    CPC分类号: F16J9/069

    摘要: This invention relates to a piston ring having two ring elements and a spacer-expander the latter including a series of interconnected parts each comprising two pairs of inwardly directed limbs, the inner ends of which are in contact with and resiliently load the ring elements, and a spacer element which extends transversely to space apart the ring elements at the outer periphery.