公开(公告)号：US20200220664A1

公开(公告)日：2020-07-09

申请号：US16817594

申请日：2020-03-12

Applicant: Cisco Technology, Inc.

Inventor： Michael A. RAMALHO ,  Jon M. SNYDER ,  Kashyap Kodanda Ram KAMBHATLA ,  Pal-Erik MARTINSEN ,  Wai-Tian TAN ,  Paul Edwin JONES

IPC: H04L1/18 ,  H04L29/12

Abstract: A method is described and in one embodiment includes receiving at a first node in a communications network a Session Traversal Utilities for Network Address Translation (“STUN”) message associated with a first flow, wherein the STUN message comprises a flow attribute including corresponding to the first flow; analyzing the flow attribute at the first node; setting policy corresponding to the first flow in the network based on the analyzing, wherein setting the policy includes using the flow attribute of the STUN message to configure a network path for the first flow in the communications network; and forwarding the STUN message to a next network node.

公开(公告)号：US20130258909A1

公开(公告)日：2013-10-03

申请号：US13905640

申请日：2013-05-30

Applicant: Cisco Technology, Inc.

Inventor： Michael A. RAMALHO ,  Gary Scrabutenas ,  Jim Frauenthal

IPC: H04M3/00

CPC classification number: H04M3/002 ,  H04B3/23 ,  H04M9/082

Abstract: In an example embodiment, a control connection is introduced between an adaptive jitter buffer (AJB) and an adaptive bulk delay (ABD) buffer of an echo canceller (ECAN) in an Internet Protocol (IP) conference bridge. The control connection allows the AJB to control the amount of delay inserted by the ABD in the ECAN convolution processor (CP) signal path. The adjustment in ABD delay restores the time alignment of the ECAN internal echo estimate and offsets variations in echo tail delay introduced by network induced AJB delay changes. Time-invariance is preserved in the echo tail path.

Abstract translation: 在示例实施例中，在互联网协议（IP）会议桥中的回波消除器（ECAN）的自适应抖动缓冲器（AJB）和自适应批量延迟（ABD）缓冲器之间引入控制连接。 控制连接允许AJB控制ABD在ECAN卷积处理器（CP）信号路径中插入的延迟量。 ABD延迟的调整恢复ECAN内部回波估计的时间对齐，并补偿由网络诱发的AJB延迟变化引入的回波尾延迟的变化。 回波尾路径中保留时间不变性。