Controlling the transition glitch that occurs when a gateway switches from voice over IP to voice band data
    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

    IPC分类号: H04L12/56 H04J3/12

    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。

    Selective text telephony character discarding
    3.
    发明申请
    Selective text telephony character discarding 审中-公开
    选择性文字电话字符丢弃

    公开(公告)号:US20070159968A1

    公开(公告)日:2007-07-12

    申请号:US11331655

    申请日:2006-01-12

    申请人: Nicholas Cutaia

    发明人: Nicholas Cutaia

    IPC分类号: H04L12/26

    摘要: A network device has a port to allow the device to transmit text telephony packets over a packet network. The device includes at least one processor to detect impending buffer overflow, determine a number of text telephony characters to be dropped, and select a compression to be applied to the text telephony characters to manage buffer overflow.

    摘要翻译: 网络设备具有允许设备通过分组网络传输文本电话分组的端口。 该设备包括至少一个处理器来检测即将发生的缓冲器溢出,确定要丢弃的多个文本电话字符,并且选择要应用于文本电话字符的压缩以管理缓冲器溢出。