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1. 发明申请

US20050058061A1 System and method for utilizing direct user signaling to enhance fault tolerant H.323 systems 有权
标题翻译：利用直接用户信令来增强容错H.323系统的系统和方法
公开(公告)号：US20050058061A1
公开(公告)日：2005-03-17
申请号：US10672545
申请日：2003-09-25
申请人： Shmuel Shaffer , William Beyda , Randall Wuerfel
发明人： Shmuel Shaffer , William Beyda , Randall Wuerfel
IPC分类号： H04L29/06 , H04L29/14 , G01R31/08 , G06F11/00 , H04J1/16
CPC分类号： H04L29/06 , H04L29/06027 , H04L65/1009 , H04L65/1046 , H04L65/1059 , H04L65/1069 , H04L69/40
摘要： An H.323 client terminal (102) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines (110a, 110b). The primary control unit (110a) sends signaling messages to a primary gatekeeper (108a) and triggers the secondary control unit (110b) to send a message with an appropriate correlation identifier directly to a second client terminal. The primary control unit (110a) establishes a call per standard H.323 protocols. The secondary control unit (110b) also establishes a direct signaling connection to the second client terminal as back up. However, no media channels are established for this backup signaling. The secondary control unit (110b) checks the status of the call with the primary control unit (110a). If the call signaling on the primary control unit (110a) is proceeding normally, no further action is taken. If the call signaling with the primary gatekeeper (108a) fails, the secondary control unit (110b) takes over the signaling communication via the direct signaling channel.
摘要翻译：根据本发明实施例的H.323客户终端（102）采用主要和次要H.323控制单元或状态机（110a，110b）。主控制单元（110a）向初级关守（108a）发送信令消息，并且触发次级控制单元（110b）将具有适当的相关标识符的消息直接发送到第二客户终端。主控制单元（110a）根据标准H.323协议建立呼叫。次级控制单元（110b）还建立到第二客户终端的直接信令连接作为备份。然而，这种备份信令没有建立媒体渠道。次级控制单元（110b）利用主控制单元（110a）检查呼叫的状态。如果主控制单元（110a）上的呼叫信令正常进行，则不采取进一步的动作。如果与主网守（108a）的呼叫信令失败，则次级控制单元（110b）经由直接信令信道接管信令通信。

2. 发明授权

US07724641B2 System and method for utilizing direct user signaling to enhance fault tolerant H.323 systems 有权
标题翻译：利用直接用户信令来增强容错H.323系统的系统和方法
公开(公告)号：US07724641B2
公开(公告)日：2010-05-25
申请号：US10672545
申请日：2003-09-25
申请人： Shmuel Shaffer , William J. Beyda , Randall Wuerfel
发明人： Shmuel Shaffer , William J. Beyda , Randall Wuerfel
IPC分类号： H04J1/16 , H04L12/56
CPC分类号： H04L29/06 , H04L29/06027 , H04L65/1009 , H04L65/1046 , H04L65/1059 , H04L65/1069 , H04L69/40
摘要： An H.323 client terminal (102) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines (110a, 110b). The primary control unit (110a) sends signaling messages to a primary gatekeeper (108a) and triggers the secondary control unit (110b) to send a message with an appropriate correlation identifier directly to a second client terminal. The primary control unit (110a) establishes a call per standard H.323 protocols. The secondary control unit (110b) also establishes a direct signaling connection to the second client terminal as back up. However, no media channels are established for this backup signaling. The secondary control unit (110b) checks the status of the call with the primary control unit (110a). If the call signaling on the primary control unit (110a) is proceeding normally, no further action is taken. If the call signaling with the primary gatekeeper (108a) fails, the secondary control unit (110b) takes over the signaling communication via the direct signaling channel.
摘要翻译：根据本发明实施例的H.323客户终端（102）采用主要和次要H.323控制单元或状态机（110a，110b）。主控制单元（110a）向初级关守（108a）发送信令消息，并且触发次级控制单元（110b）将具有适当的相关标识符的消息直接发送到第二客户终端。主控制单元（110a）根据标准H.323协议建立呼叫。次级控制单元（110b）还建立到第二客户终端的直接信令连接作为备份。然而，这种备份信令没有建立媒体渠道。次级控制单元（110b）利用主控制单元（110a）检查呼叫的状态。如果主控制单元（110a）上的呼叫信令正常进行，则不采取进一步的动作。如果与主网守（108a）的呼叫信令失败，则次级控制单元（110b）经由直接信令信道接管信令通信。

3. 发明授权

US06738343B1 System and method for utilizing direct user signaling to enhance fault tolerant H.323 systems 有权
标题翻译：利用直接用户信令来增强容错H.323系统的系统和方法
公开(公告)号：US06738343B1
公开(公告)日：2004-05-18
申请号：US09320826
申请日：1999-05-26
申请人： Shmuel Shaffer , William J. Beyda , Randall Wuerfel
发明人： Shmuel Shaffer , William J. Beyda , Randall Wuerfel
IPC分类号： H04J116
CPC分类号： H04L29/06 , H04L29/06027 , H04L65/1009 , H04L65/1046 , H04L65/1059 , H04L65/1069 , H04L69/40
摘要： An H.323 client terminal (102) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines (110a, 110b). The primary control unit (110a) sends signaling messages to a primary gatekeeper (108a) and triggers the secondary control unit (110b) to send a message with an appropriate correlation identifier directly to a second client terminal. The primary control unit (110a) establishes a call per standard H.323 protocols. The secondary control unit (110b) also establishes a direct signaling connection to the second client terminal as back up. However, no media channels are established for this backup signaling. The secondary control unit (110b) checks the status of the call with the primary control unit (110a). If the call signaling on the primary control unit (110a) is proceeding normally, no further action is taken. If the call signaling with the primary gatekeeper (108a) fails, the secondary control unit (110b) takes over the signaling communication via the direct signaling channel.
摘要翻译：根据本发明实施例的H.323客户终端（102）采用主要和次要H.323控制单元或状态机（110a，110b）。主控制单元（110a）向初级关守（108a）发送信令消息，并且触发次级控制单元（110b）将具有适当的相关标识符的消息直接发送到第二客户终端。主控制单元（110a）根据标准H.323协议建立呼叫。次级控制单元（110b）还建立到第二客户终端的直接信令连接作为备份。然而，这种备份信令没有建立媒体渠道。次级控制单元（110b）利用主控制单元（110a）检查呼叫的状态。如果主控制单元（110a）上的呼叫信令正常进行，则不采取进一步的动作。如果与主网守（108a）的呼叫信令失败，则次级控制单元（110b）经由直接信令信道接管信令通信。

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