'wake up' or 'morning call' system for automatically signaling private branch exchange extension stations

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• 2. 用户小交换机系统中的分机用户间相互呼叫处理方法 [P] . 中国专利： CN1574980A . 2005-02-02
• 3. "WAKE UP" OR "MORNING CALL" SYSTEM FOR AUTOMATICALLY SIGNALING PRIVATE BRANCH EXCHANGE EXTENSION STATIONS [P] . CA594960A . 1960-03-22

  机译： 用于自动给私人分支交换扩展站发信号的“唤醒”或“电话呼叫”系统

• 4. METHOD FOR ALLOCATING INCOMING-CALL TO EXTENSION TELEPHONE SETS IN PRIVATE BRANCH EXCHANGE AND PRIVATE BRANCH EXCHANGE HAVING AUTOMATIC INCOMING-CALL ALLOCATING FUNCTION [P] . CA2013915C . 1994-11-29

  机译： 具有自动拨入呼叫分配功能的私人分支交换中的分配呼叫电话到扩展电话机的方法

• 5. Method for allocating incoming-call to extension telephone sets in private branch exchange and private branch exchange having automatic incoming-call allocating function [P] . 美国专利： US5268958A . 1993-12-07

  机译： 在具有自动来电分配功能的专用小交换机和专用小交换机中将电话分配给分机的方法

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• 5. Digital Private Network Signaling System (DPNSS)/Digital Access Signaling System 2 (DASS 2) Extensions to the IUA Protocol [O] . R. Mukundan, K. Morneault, N. Mangalpally 2005

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