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首页> 外国专利> CALLING STATE TRANSFER SWITCH-BACK METHOD IN VoIP PHONE SYSTEM, THE VoIP PHONE SYSTEM, AND PHONE TERMINAL AND SWITCH MANAGEMENT DEVICE FOR THE VoIP PHONE

CALLING STATE TRANSFER SWITCH-BACK METHOD IN VoIP PHONE SYSTEM, THE VoIP PHONE SYSTEM, AND PHONE TERMINAL AND SWITCH MANAGEMENT DEVICE FOR THE VoIP PHONE

机译：VoIP电话系统中的呼叫状态转移回切方法，VoIP电话系统以及用于VoIP电话的电话终端和交换机管理装置

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PROBLEM TO BE SOLVED: To realize a function of a calling state transfer switchback function, even in a VoIP phone system which is in compliance with the ITU-T recommendation H. 323.;SOLUTION: When a switchback operation is detected by a transfer source, before a transfer destination responds to a call after starting a calling state transfer procedure is started, a transfer source transmits a facility message of a switchback request to an IP network. The facility message for indicating a failure of transfer to the transfer destination by the calling state transfer procedure is notified to the transfer source. Furthermore, a speech state by end of transfer is notified by the facility message, to bring a call state to the transfer source and the transfer destination, depending on the switchback operation.;COPYRIGHT: (C)2003,JPO
机译：要解决的问题：即使在符合ITU-T建议H.323的VoIP电话系统中，也要实现呼叫状态转移回拨功能的功能;解决方案：当转移源检测到回拨操作时在开始呼叫状态转移过程开始之后，在转移目的地响应呼叫之前，转移源将回切请求的便利消息发送到IP网络。将用于指示通过呼叫状态转移过程向转移目的地转移失败的便利消息通知转移源。此外，根据回切操作，设施消息会通知传输结束之前的语音状态，以将呼叫状态带到传输源和传输目的地。版权所有：（C）2003，JPO

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