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1.发明授权Controlling the transition glitch that occurs when a gateway switches from voice over IP to voice band data 失效控制网关从IP语音切换到语音频带数据时发生的转换故障公开(公告)号：US07058066B1
公开(公告)日：2006-06-06
申请号：US10763771
申请日：2004-01-22
CPC分类号： H04L12/6418 , H04J3/0632
摘要： In a gateway router the length of the play-out buffer in VBD mode is not set at a previously established value. Instead the length of the play-out buffer in VBD mode is determined by the length of the buffer in the previous audio mode. When the system switches from audio mode to VDB mode, the length of the play-out buffer in audio mode is noted. The length of the play-out buffer in VBD mode is then set equal to its length in the prior audio mode plus a dilation factor. An audio concealment algorithm (which fills in gaps caused by missed packets) is used during the transition from audio to VDB to conceal any transition glitch during the answer tone.
摘要翻译： 在网关路由器中，VBD模式下的播放缓冲区的长度不会设置为先前建立的值。 相反，VBD模式中的播放缓冲器的长度由先前音频模式中缓冲区的长度决定。 当系统从音频模式切换到VDB模式时，注意音频模式下播放缓冲区的长度。 然后将VBD模式中的播放缓冲器的长度设置为等于其在先前的音频模式中的长度加上扩张因子。 在从音频到VDB的过渡期间使用音频隐藏算法（其填充由错过的分组引起的间隙），以在应答音中隐藏任何转换毛刺。
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2.发明授权Technique for connecting fax machines with advanced capabilities over a network which is not adapted to handle certain protocols 有权通过网络连接具有先进功能的传真机的技术，不适合处理某些协议公开(公告)号：US07639403B2
公开(公告)日：2009-12-29
申请号：US11058491
申请日：2005-02-14
申请人： Mehryar Khalili Garakani , Hanh Luong , Brooks S. Read , Steven J. White , Ilya Umansky , Herbert M. Wildfeuer
发明人： Mehryar Khalili Garakani , Hanh Luong , Brooks S. Read , Steven J. White , Ilya Umansky , Herbert M. Wildfeuer
IPC分类号： H04N1/04
CPC分类号： H04N1/00209 , H04N1/32719 , H04N1/32721 , H04N1/32723 , H04N1/32771 , H04N1/32784 , H04N1/32795 , H04N1/32797 , H04N1/33338
摘要： An improved method and system for connecting Super Group 3 fax machines over network gateways that operate using the un-enhanced T.38 protocol. With the present invention, the CM tone is suppressed. Thus a gateway that generates an AnsAm tone, will not receive a CM tone in response. The T.38 protocol does not specify what occurs if a CM tone is not received; however, it has been found that, in practice, existing fax machines fall back to V.21 mode if a CM tone is not received.
摘要翻译： 一种改进的方法和系统，用于通过网络网关连接超级组3传真机，使用未增强的T.38协议进行操作。 根据本发明，抑制了CM色调。 因此，生成AnsAm音调的网关将不会收到CM音。 T.38协议没有指定如果没有收到CM音，会发生什么; 然而，已经发现，在实践中，如果没有接收到CM音调，现有的传真机将返回到V.21模式。
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3.发明授权公开(公告)号：US07543063B1
公开(公告)日：2009-06-02
申请号：US10144154
申请日：2002-05-10
申请人： Vincent T. Grove , Herbert M. Wildfeuer , Mehryar Khalili Garakani , Bruce D. Juhlin , Scott Anthony Boynton
发明人： Vincent T. Grove , Herbert M. Wildfeuer , Mehryar Khalili Garakani , Bruce D. Juhlin , Scott Anthony Boynton
IPC分类号： G06F15/16
CPC分类号： H04L12/6418 , H04L12/2898 , H04L29/06027 , H04L65/1026 , H04L65/1036 , H04L2012/6424 , H04L2012/6481 , H04M7/122
摘要： A modem data aggregating gateway that supports modem relay functionality for permitting reliable switching of modem traffic between a VoIP network and a data packet switch Internet Protocol (IP) network, s.a. the Internet. The modem relay aggregator may receive modem data encapsulated as Voice over IP (VoIP) data packets in accordance with a Simple Reliable Protocol Transport (SRPT) mechanism. The packet data may be error corrected and/or decompressed before being repackaged for forwarding to the ultimate destination. In the event that the destination is itself an IP device, the modem relay aggregator may forward the packets directly over the IP network. As a result, if the destination of a modem call is an IP device (such as a Web site or other Internet-enabled device) the technique eliminates two points from a processing path in which digital signal processing (DSPs) would otherwise have to perform modem protocol processing. Otherwise, minimal modem reformatting can be performed at the aggregation point.
摘要翻译： 一种调制解调器数据聚合网关，其支持调制解调器中继功能，以允许在VoIP网络和数据分组交换机因特网协议（IP）网络之间可靠地切换调制解调器流量。 互联网。 调制解调器中继聚合器可以根据简单可靠协议传输（SRPT）机制接收封装为IP语音（VoIP）数据分组的调制解调器数据。 分组数据可以在被重新包装以转发到最终目的地之前被纠错和/或解压缩。 在目的地本身是IP设备的情况下，调制解调器中继聚合器可以直接通过IP网络转发分组。 结果，如果调制解调器呼叫的目的地是IP设备（诸如网站或其他启用互联网的设备），则该技术消除了数字信号处理（DSP）否则必须执行的处理路径的两个点 调制解调器协议处理。 否则，可以在聚合点执行最小的调制解调器重新格式化。
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公开(公告)号：US08681784B2
公开(公告)日：2014-03-25
申请号：US11562363
申请日：2006-11-21
CPC分类号： H04L29/06231 , H04L29/06482 , H04L65/102 , H04L65/601 , H04M7/1245 , H04M11/064 , H04M2203/657
摘要： In one embodiment, one or more gateways sniff the voice channel during the voice mode. If it is determined that V.8bis signals are being initiated, then the gateway breaks these exchanges by suppressing such signaling. Modem relay communications then are allowed to proceed. Briefly, the method and apparatus involve monitoring a call during a voice mode phase for an initiating signal representative of the defined signaling, the monitoring being performed by a local gateway and, if such an initiating signal is detected during the monitoring, then suppressing such detected signaling in such manner that the signaling does not reach the remote gateway. Preferably, the monitoring is for an initiating signal characterized by a dual tone of defined frequency and duration of approximately 1375 Hz and 2002 Hz for a duration of approximately 400 ms or 285 ms, in agreement with the ITU-T Recommendation V.8bis (standard) adopted by the International Telecommunication Union. Monitoring is continued at least until an answer back from an answering station is received by the gateway. When the suppression succeeds and the remote (non-initiating gateway that may be awaiting such an initiating signal halts any further V.8bis transaction attempts, the local gateway initiates a modem relay session of operation with the remote gateway.
摘要翻译： 在一个实施例中，一个或多个网关在语音模式期间嗅探语音信道。 如果确定V.8bis信号正在启动，则网关通过抑制这种信令来中断这些交换。 然后允许调制解调器中继通信继续。 简而言之，该方法和装置涉及在代表定义的信令的启动信号的语音模式阶段期间监视呼叫，监视由本地网关执行，并且如果在监视期间检测到这样的启动信号，则抑制这种检测到的 信令以信令不到达远程网关的方式。 优选地，监视是针对起始信号，其特征在于具有大约1375Hz和2002Hz的定义的频率和持续时间的双音调，持续时间为大约400ms或285ms，与ITU-T建议V.8bis（标准）一致 ）国际电信联盟通过。 至少继续进行监控，直到网关收到来自应答站的应答。 当抑制成功并且可能正在等待这样的发起信号的远程（非发起网关停止任何进一步的V.8bis事务尝试）时，本地网关发起与远程网关的调制解调器中继操作会话。
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公开(公告)号：US07113501B2
公开(公告)日：2006-09-26
申请号：US09728431
申请日：2000-11-30
CPC分类号： H04L5/1438 , H04L1/004
摘要： Method and apparatus for synchronizing two de/compression modems, e.g. V.42bis modems, in a voice frame network, the modems each being connected with a corresponding gateway to form a corresponding segment, are described. The method includes terminating the physical layer at either end of the corresponding gateways; negotiating at either gateway a physical layer and error-correcting data link layer with the corresponding modem; sending from either gateway to an associated modem in response to any poll command therefrom a not-ready message; signaling the other gateway when physical layer and error-correcting data link layer negotiations have been completed; and when each gateway has signaled the other that negotiations have been completed, halting the not-ready message-sending and sending instead a ready message to a corresponding modem, whereby synchronized compressed and decompressed data transmissions between the modems commences on a reliable transport. Preferably, thereafter, and upon occurrence of a destructive break condition or receipt at either gateway from a corresponding modem of an initiate data transfer command, such condition or receipt is relayed from a segment where it is detected to the other segment, thereby maintaining synchronization between the modems. Preferably, the messages and commands are compliant with the ITU-T V.42 protocol.
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公开(公告)号：US08072965B2
公开(公告)日：2011-12-06
申请号：US10308592
申请日：2002-12-02
IPC分类号： H04L12/66
CPC分类号： H04L12/2898 , H04L29/06
摘要： A network device and a method for its operation are disclosed. The network device has a first interface to a client device to allow reception of client device signals and a second interface to a packet network to allow transmission and reception of modem relay signals. A processor translates between modem relay signals received or transmitted on the second interface and client device signals received or transmitted on the first interface. In one implementation the modem relay originator and the client device are collapsed into one device and the first interface is implemented as a virtual interface.
摘要翻译： 公开了一种网络设备及其操作方法。 网络设备具有到客户端设备的第一接口，以允许客户端设备信号的接收，以及到分组网络的第二接口，以允许发送和接收调制解调器中继信号。 处理器在第二接口上接收或发送的调制解调器中继信号和在第一接口上接收或发送的客户端设备信号之间进行转换。 在一个实现中，调制解调器中继发起者和客户端设备被折叠成一个设备，并且第一接口被实现为虚拟接口。
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7.发明授权公开(公告)号：US07692560B2
公开(公告)日：2010-04-06
申请号：US11971689
申请日：2008-01-09
IPC分类号： H03M7/34
摘要： A two stage compression sub-system for clear channel data. The front stage of the compressing sub-system is an octet based repeat compressor (for example a flag compressor). The second stage is dictionary based compressor (for example Lempel-Ziv (LZ) or Huffmann). Data is compressed using several different techniques, and the technique that provides the best compression is used for each particular packet. For example, each packet can be: a) compress through both compression stages. b) compress through front stage flag compressor only c) compress through back stage dictionary compressor only d) not compressed through either stage (for highly incompressible data) After compression, each packet is provided with a header which specifies the exact method used to compress that packet. At the decoder, the packet header is interrogated to determine how the packet should be de-compressed and the appropriate de-compression is then used.
摘要翻译： 一个用于清除通道数据的两级压缩子系统。 压缩子系统的前级是基于八位字节的重复压缩机（例如标志压缩器）。 第二阶段是基于字典的压缩器（例如Lempel-Ziv（LZ）或Huffmann））。 使用几种不同的技术压缩数据，并且为每个特定分组使用提供最佳压缩的技术。 例如，每个数据包可以是：a）通过两个压缩级进行压缩。 b）通过前级标志压缩器压缩c）仅通过后级字典压缩器压缩d）不通过任一级压缩（对于高度不可压缩的数据）压缩后，每个数据包都提供一个头，指定用于压缩该压缩的精确方法 包。 在解码器处，询问分组报头以确定分组如何被解压缩，然后使用适当的解压缩。
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8.发明授权Technique for connecting V.34 fax machines via fax relay gateways which are not adapted to support V.34 fax modulation 有权通过传真中继网关连接V.34传真机的技术，不适用于支持V.34传真调制公开(公告)号：US07623273B1
公开(公告)日：2009-11-24
申请号：US10743980
申请日：2003-12-22
IPC分类号： H04N1/00
CPC分类号： H04N1/32771 , H04N1/00209 , H04N1/32719 , H04N1/32721 , H04N1/32723 , H04N1/32784 , H04N1/32795 , H04N1/32797 , H04N1/33338
摘要： A method and system for connecting V.34 enabled fax machines (that is fax machines capable of operating at 33,600 bps) over network gateways that use the un-enhanced T.38 protocol, that is, gateways that have not been upgraded to handle the V.34 33,600 bps protocol in fax relay mode. When a gateway detects a V.8 protocol signal, the signal is modified so that the fax machines fall back to non V.34 protocol and operate at a slower speed which the un-enhanced T.38 gateway is capable of handling.
摘要翻译： 一种用于通过使用未增强的T.38协议的网关网关连接支持V.34的传真机（即能够以33,600bps运行的传真机）的方法和系统，即尚未升级以处理 V.34 33,600 bps协议在传真中继模式。 当网关检测到V.8协议信号时，该信号被修改，使得传真机回退到非V.34协议并且以较慢的速度工作，未增强的T.38网关能够处理。
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9.发明申请公开(公告)号：US20090135810A1
公开(公告)日：2009-05-28
申请号：US12321497
申请日：2009-01-21
申请人： Vicent T. Grove , Herbert M. Wildfeuer , Mehryar Khalili Garakani , Bruce D. Juhlin , Scott Anthony Boynton
发明人： Vicent T. Grove , Herbert M. Wildfeuer , Mehryar Khalili Garakani , Bruce D. Juhlin , Scott Anthony Boynton
IPC分类号： H04L12/66
CPC分类号： H04M11/06 , H04L12/4633
摘要： A modem data aggregating gateway that supports modem relay functionality for permitting reliable switching of modem traffic between a VoIP network and a data packet switch Internet Protocol (IP) network, s.a. the Internet. The modem relay aggregator may receive modem data encapsulated as Voice over IP (VoIP) data packets in accordance with a Simple Packet Relay Transport (SPRT) mechanism. The packet data may be error corrected and/or decompressed before being repackaged for forwarding to the ultimate destination. In the event that the destination is itself an IP device, the modem relay aggregator may forward the packets directly over the IP network. As a result, if the destination of a modem call is an IP device (such as a Web site or other Internet-enabled device) the technique eliminates two points from a processing path in which digital signal processing (DSPs) would otherwise have to perform modem protocol processing. Otherwise, minimal modem reformatting can be performed at the aggregation point.
摘要翻译： 一种调制解调器数据聚合网关，其支持调制解调器中继功能，以允许在VoIP网络和数据分组交换机因特网协议（IP）网络之间可靠地切换调制解调器业务。 互联网。 调制解调器中继聚合器可以根据简单分组中继传输（SPRT）机制接收封装成IP语音（VoIP）数据分组的调制解调器数据。 分组数据可以在被重新包装以转发到最终目的地之前被纠错和/或解压缩。 在目的地本身是IP设备的情况下，调制解调器中继聚合器可以直接通过IP网络转发分组。 结果，如果调制解调器呼叫的目的地是IP设备（诸如网站或其他启用互联网的设备），则该技术消除了数字信号处理（DSP）否则必须执行的处理路径的两个点 调制解调器协议处理。 否则，可以在聚合点执行最小的调制解调器重新格式化。
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10.发明授权公开(公告)号：US07489633B2
公开(公告)日：2009-02-10
申请号：US10255168
申请日：2002-09-24
IPC分类号： H04L12/12
CPC分类号： H04M7/006 , H04L29/06 , H04L29/06027
摘要： Method and apparatus are described for differential MoIP bring-up and compression negotiation. A first differential, and, more particularly, overlapping, bring-up method involves initiating a bring-up of a first layer associated with a first modem; imposing a time delay; after the time delay, initiating a bring-up of a second layer associated with a second modem; and delaying completion of the first layer bring-up associated with the first modem until substantial completion of the second layer bring-up associated with the second modem. Two alternative differential, and, more particularly, sequential, V.8 modem relay link bring-up methods involve first bringing up a physical layer at a first leg while delaying bring-up of the physical layer of the second leg until completion of the bring up of the physical layer at the first leg, and thereafter completing XID exchange. All described methods and apparatus involve at least physical layer bring-up at both ends, and all optionally may involve the bring-up at either end also of error-correction (EC) layers and data compression layers.
摘要翻译： 描述了用于差分MoIP启动和压缩协商的方法和装置。 并且更具体地，重叠的提出方法涉及启动与第一调制解调器相关联的第一层的启动; 施加时间延迟; 在时间延迟之后，启动与第二调制解调器相关联的第二层的启动; 并延迟与第一调制解调器相关联的第一层提出的完成，直到与第二调制解调器相关联的第二层启动的基本完成。 两种可选的差分，更具体地，顺序的V.8调制解调器中继链路提出方法涉及首先在第一条腿处引起物理层，同时延迟第二条腿的物理层的启动，直到完成 在第一站的物理层的上升，然后完成XID交换。 所有描述的方法和装置至少涉及在两端的物理层启动，并且所有这些方法和装置都可以包括在错误校正（EC）层和数据压缩层的任一端的启动。
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