Data/voice/fax compression multiplexer
    81.
    发明授权
    Data/voice/fax compression multiplexer 失效
    数据/语音/传真压缩复用器

    公开(公告)号:US5682386A

    公开(公告)日:1997-10-28

    申请号:US229958

    申请日:1994-04-19

    摘要: A data multiplexing network is described which multiplexes a plurality of asynchronous data channels with an asynchronous data stream representing compressed voice signals and/or facsimile signals onto a single synchronous data packet stream. The single synchronous data packet stream is then transmitted by a high speed statistical multiplexer over a composite link to a second site using a modified high-level synchronous data link control protocol with an overlay of a priority statistical multiplexing algorithm. The asynchronous data channels and the compressed voice channel and/or facsimile signals are demultiplexed and reconstructed for sending to other asynchronous computer terminals and to a standard telephone or facsimile analog port at the second site, respectively. PBX trunk interfaces are also provided to allow PBX's to share the composite link between sites.

    摘要翻译: 描述了一种数据复用网络,其将多个异步数据信道与表示压缩语音信号和/或传真信号的异步数据流复用到单个同步数据分组流上。 然后,使用具有优先级统计复用算法的覆盖的修改的高级同步数据链路控制协议,单个同步数据分组流由高速统计多路复用器通过复合链路发送到第二站点。 异步数据信道和压缩语音信道和/或传真信号被解复用和重构,以分别发送到第二站点的其他异步计算机终端和标准电话或传真模拟端口。 还提供PBX中继接口,以便PBX共享站点之间的复合链路。

    System and method for communication of audio data over a packet-based
network
    85.
    发明授权
    System and method for communication of audio data over a packet-based network 失效
    用于通过基于分组的网络通信音频数据的系统和方法

    公开(公告)号:US5526353A

    公开(公告)日:1996-06-11

    申请号:US359393

    申请日:1994-12-20

    摘要: A system and method for communicating audio data in a packet-based computer network wherein transmission of data packets through the computer network requires variable periods of transmission time. The system comprises: (1) a packet assembly circuit for constructing a data packet from a portion of a stream of digital audio data corresponding to an audio signal, the packet assembly circuit generating a position identifier indicating a temporal position of the portion relative to the stream, inserting the position identifier into the data packet and queuing the data packet for transmission through a backbone of the computer network and (2) a packet disassembly circuit, having a buffer associated therewith, for receiving the data packet from the backbone, the packet disassembly circuit inserting the portion into an absolute location of the buffer, the position identifier determining the location, the portion thereby synchronized with adjacent portions of the stream of digital audio data in the buffer to compensate for the variable periods of transmission time.

    摘要翻译: 用于在基于分组的计算机网络中传送音频数据的系统和方法,其中通过计算机网络传输数据分组需要可变的传输时间周期。 该系统包括:(1)分组组合电路,用于从对应于音频信号的数字音频数据流的一部分构建数据分组,分组组合电路产生一个位置标识符,该位置标识符指示该部分相对于该音频信号的时间位置 将位置标识符插入到数据分组中,并且排队数据分组以便通过计算机网络的骨干传送;以及(2)具有与之相关的缓冲器的分组分解电路,用于从主干接收数据分组,分组 将部分插入到缓冲器的绝对位置,位置标识符确定位置,该部分由此与缓冲器中的数字音频数据流的相邻部分同步,以补偿传输时间的可变周期。