Apparatus for multiplexing line and data transmission method using the same
    4.
    发明授权
    Apparatus for multiplexing line and data transmission method using the same 失效
    用于复用线路和数据传输方法的装置

    公开(公告)号:US06920157B1

    公开(公告)日:2005-07-19

    申请号:US09459984

    申请日:1999-12-14

    申请人: Ok Bae Park

    发明人: Ok Bae Park

    摘要: An apparatus for multiplexing a line and a data transmission method therefor are provided to improve data transmission efficiency. The apparatus for multiplexing a line according to the present invention includes: a plurality of conversion processors for modulating a call processing request signal or transmission data from each user application by a predetermined mode and then demodulating the signal or data to an original data. The apparatus can also process an external incoming call processing request signal or transmission data by a predetermined modulation/demodulation mode and provide the incoming signal to a corresponding user application. The apparatus includes a main controller for processing the call processing request signals provided from the conversion processors, and generating call control data that is added to the at least one header. The main controller is also configured to separate header data included in incoming transmission data. A multiplexing/demultiplexing processor is used for logically multiplexing the call processing request signals or transmission data output from the main controller and for demultiplexing an external multiplexing signal.

    摘要翻译: 为了提高数据传输效率,提供一种用于多路复用的装置及其数据发送方法。 根据本发明的多路复用装置包括:多个转换处理器,用于以预定模式调制来自每个用户应用的呼叫处理请求信号或发送数据,然后将信号或数据解调为原始数据。 该装置还可以通过预定的调制/解调模式处理外部来电处理请求信号或发送数据,并将输入信号提供给相应的用户应用程序。 该装置包括:主控制器,用于处理从转换处理器提供的呼叫处理请求信号;以及产生添加到至少一个头部的呼叫控制数据。 主控制器还被配置为分离输入传输数据中包括的报头数据。 复用/解复用处理器用于逻辑地多路复用来自主控制器输出的呼叫处理请求信号或发送数据,并用于解复用外部多路复用信号。

    Method and apparatus for establishing modem connections over a packet network
    7.
    发明授权
    Method and apparatus for establishing modem connections over a packet network 有权
    通过分组网络建立调制解调器连接的方法和装置

    公开(公告)号:US06683888B1

    公开(公告)日:2004-01-27

    申请号:US10280768

    申请日:2002-10-25

    IPC分类号: H04J316

    摘要: A packet-based or cell-based data communication system is capable of determining whether a new call is a modem call or a voice call before a modem connection is established between the two end devices. The network switches are configured to monitor for distinctive facsimile modem and data modem calling and answer signals. In response to the detection of such calling or answer signals, the data communication system selects a speech coding scheme and/or a data transmission technique for use in connection with the current call, while a conventional 64 kbps PCM transmission scheme is maintained for communications between the network and the end devices. A speech coding protocol, such as ADPCM, may be enabled for voice calls, thus conserving network bandwidth. The 64 kbps PCM scheme may be employed to facilitate high speed modem transmissions.

    摘要翻译: 基于分组或基于单元的数据通信系统能够在两个终端设备之间建立调制解调器连接之前确定新呼叫是调制解调器呼叫还是语音呼叫。 网络交换机配置为监视不同的传真调制解调器和数据调制解调器呼叫和应答信号。 响应于这种呼叫或应答信号的检测,数据通信系统选择与当前呼叫结合使用的语音编码方案和/或数据传输技术,而维持传统的64kbps PCM传输方案以用于 网络和终端设备。 诸如ADPCM的语音编码协议可以被启用用于语音呼叫,从而节省网络带宽。 可以采用64kbps PCM方案来促进高速调制解调器传输。