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US6011845A Method and system for two-way call holding using an intelligent communication device 失效
使用智能通信设备进行双向呼叫保持的方法和系统

Method and system for two-way call holding using an intelligent
communication device
摘要:
A partitioned communication system includes a shared switch network system in communication with an Intelligent Network Processor (INP). A terminating intelligent communication device (ICD) located outside the management and control of the shared network operates as an Originating Communication System (OCS) to negotiate 2-way call holding with a Called Communication System (CCS).
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