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1. 发明授权

US07876745B1 Tandem free operation over packet networks 有权
标题翻译：通过分组网络进行串联自由操作
公开(公告)号：US07876745B1
公开(公告)日：2011-01-25
申请号：US10692233
申请日：2003-10-23
申请人： Mark Stewart , Graeme Gibbs , Dominic Walker
发明人： Mark Stewart , Graeme Gibbs , Dominic Walker
IPC分类号： H04L12/66 , H04L12/28
CPC分类号： H04M7/006 , H04L65/103 , H04M7/0072 , H04W88/181
摘要： A packet-based network carries a stream of voice band data, such as PCM voice data, which can include tandem free operation (TFO) information. Voice data is usually subject to processing, such as compression, at an ingress entity. The ingress entity determines whether the stream of voice data contain tandem free operation (TFO) information and, if TFO information is present, sends the TFO information across the packet network without subjecting it to processing. This preserves the integrity of the TFO information. TFO information can be carried by an unprocessed channel having a bandwidth of less than 64 kbit/s. TFO information is reinserted at an egress entity of the packet network.
摘要翻译：基于分组的网络携带诸如PCM语音数据的语音频带数据流，其可以包括串联自由操作（TFO）信息。语音数据通常在入口实体处理，如压缩。入口实体确定语音数据流是否包含串联自由操作（TFO）信息，并且如果存在TFO信息，则通过分组网络发送TFO信息而不对其进行处理。这保留了TFO信息的完整性。 TFO信息可以由带宽小于64kbit / s的未处理信道承载。 TFO信息被重新插入分组网络的出口实体。

2. 发明授权

US07907708B2 Voice and fax over IP call establishment in a communications network 有权
标题翻译：在通信网络中通过IP呼叫建立语音和传真
公开(公告)号：US07907708B2
公开(公告)日：2011-03-15
申请号：US10164524
申请日：2002-06-06
申请人： Dominic Walker , Graeme Gibbs
发明人： Dominic Walker , Graeme Gibbs
IPC分类号： H04M11/00
CPC分类号： H04N1/32704 , H04M7/1245 , H04M2203/2066 , H04M2203/657 , H04N1/00209 , H04N1/32708 , H04N1/32719 , H04N1/32797
摘要： In a communications network, voice and facsimile calls are established between first and second and second terminals via first and second media gateways in a communications network. Each gateway is capable of autonomous transitioning between a voice over IP (VoIP) call mode and a facsimile over IP (FoIP) call mode. A bearer path for the call is established via a media gateway controller. During call setup, the media gateways exchange confirmation of each gateway's capability to perform autonomous transitioning between VoIP and FoIP call modes. The call is established as a VoIP call, and, on a determination by the media gateways that a facsimile call is required, each media gateway autonomously transitions between its VoIP and FoIP call modes without the intervention of the media gateway controller.
摘要翻译：在通信网络中，通信网络中的第一和第二媒体网关在第一和第二和第二终端之间建立语音和传真呼叫。每个网关能够在IP语音（VoIP）呼叫模式和IP传真（FoIP）呼叫模式之间进行自主转换。通过媒体网关控制器建立呼叫的承载路径。在呼叫建立期间，媒体网关交换每个网关对VoIP和FoIP呼叫模式之间进行自主转换的能力的确认。该呼叫被建立为VoIP呼叫，并且在媒体网关确定需要传真呼叫的情况下，每个媒体网关在其VoIP和FoIP呼叫模式之间自主地转换，而无需介入媒体网关控制器。

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