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71. 发明授权

US07747672B1 Method and apparatus using lightweight RRQ for efficient recovery of a call signaling channel in gatekeeper-routed call signaling 有权
标题翻译：使用轻量级RRQ的方法和装置，用于有效地恢复网守路由呼叫信令中的呼叫信令信道
公开(公告)号：US07747672B1
公开(公告)日：2010-06-29
申请号：US10660938
申请日：2003-09-12
申请人： Manish Marwah
发明人： Manish Marwah
IPC分类号： G06F15/16
CPC分类号： H04L65/1009 , H04L65/1073 , H04L67/1002
摘要： The present invention is directed to the recovery of a call signaling channel in connection with a realtime communication established using a packet data network. Specifically, in the event of the failure of an endpoint's current gatekeeper, this invention provides a fast mechanism for searching for an alternate gatekeeper with which the endpoint can re-establish its call signaling channel and hence can regain call service, including call features on existing calls. In accordance with an embodiment of the present invention, a lightweight registration request message is sent on the RAS channel to an alternate gatekeeper in response to the loss of an established call signaling channel, even though a keep alive signal is not then due. The lightweight RRQ message may be sent to individual gatekeepers on an alternate gatekeeper list, until a registration confirmation message is received. Alternatively, a lightweight RRQ message may be sent to all or a number of the gatekeepers on the alternate gatekeeper list simultaneously. A call signaling channel is then established between the first alternate gatekeeper to respond with a registration confirmation message, or to a selected gatekeeper where a number of gatekeepers provide an RCF message.
摘要翻译：本发明涉及与使用分组数据网络建立的实时通信相关的呼叫信令信道的恢复。具体来说，在端点当前网守发生故障的情况下，本发明提供了一种用于搜索替代关守的快速机制，终端可以通过该机制重新建立其呼叫信令信道，并因此可以重新获得呼叫服务，包括现有呼叫功能电话。根据本发明的一个实施例，即使保持活动信号不是到期，轻量级注册请求消息在RAS信道上被发送到备用网守，以响应建立的呼叫信令信道的丢失。轻量级RRQ消息可以被发送到备用网守列表上的各个维护者，直到接收到注册确认消息。或者，可以同时向备用网守列表上的全部或多个守门员发送轻量级RRQ消息。然后在第一备用看门人之间建立一个呼叫信令信道，以响应一个注册确认消息，或者一个选择的看门人，其中多个看门人提供一个RCF消息。

72. 发明申请

US20060291400A1 Efficient load balancing and heartbeat mechanism for telecommunication endpoints 有权
标题翻译：电信终端的高效负载平衡和心跳机制
公开(公告)号：US20060291400A1
公开(公告)日：2006-12-28
申请号：US11170659
申请日：2005-06-28
申请人： Mehmet Balasaygun , Frank Boyle , Scott Hendrick , Renee Krahn , Manish Marwah , Sung Moon , Nancy Schmidt
发明人： Mehmet Balasaygun , Frank Boyle , Scott Hendrick , Renee Krahn , Manish Marwah , Sung Moon , Nancy Schmidt
IPC分类号： H04L12/26 , G06F11/00 , H04J3/14 , G01R31/08 , H04L12/66 , G08C15/00 , H04J1/16 , H04L1/00
CPC分类号： H04L65/1009 , H04L29/06 , H04L29/06027 , H04L67/1002 , H04L67/1008 , H04L67/1012
摘要： The present invention is directed to load balancing call signaling channels at the times that they are established, the use of variable frequency keep alive mechanisms depending on the state of the call signaling channel, and the establishment of a call signaling channel when resources are available or otherwise based on need.
摘要翻译：本发明涉及在建立呼叫信令信道时负载均衡的呼叫信令信道，根据呼叫信令信道的状态使用可变频率保持活动机制，以及当资源可用时建立呼叫信令信道，否则根据需要。

73. 发明授权

US07054435B2 Apparatus and method for determining a minimal time bound for performing tone detection 有权
公开(公告)号：US07054435B2
公开(公告)日：2006-05-30
申请号：US10117371
申请日：2002-04-05
申请人： Sharmistha Sarkar Das , Manish Marwah
发明人： Sharmistha Sarkar Das , Manish Marwah
IPC分类号： H04M3/00
CPC分类号： H04M3/005 , H04M1/82 , H04M2201/14 , H04M2201/18
摘要： Performing tone detection for an amount of time that is calculated from the tones that the detector is designed to detect.

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