Chang De Yan

age ~60

from Frisco, TX

Get Report

Also known as:

Connected to:

Name / Title

Company / Classification

Phones & Addresses

Chang Yan
Director

Dallas Modern Chinese Language School

Chang Yan
Manager

AQUAINVESTA LLC

2003 Lk Country Dr, Arlington, TX 76012

Chang Ping Yan
Director, Secretary

China Education Technology, Inc

Methods And Systems For Providing Transport Of Media Gateway Control Commands Using High-Level Datalink Control (Hdlc) Protocol
view source
US Patent:

20050105559, May 19, 2005
Filed:

Nov 14, 2003
Appl. No.:

10/714106
Inventors:

Thomas Cain - Plano TX, US
Chang Yan - Plano TX, US
Simon Shie - Plano TX, US
International Classification:

H04J003/00
US Classification:

370498000, 370401000
Abstract:

A media gateway controller can manage a remote media gateway by sending standard media gateway control commands over an HDLC channel in a time division multiplexed link. The media gateway control commands are sent from the media gateway controller to a local media gateway, where the commands are encapsulated in a command packet and placed in the information field of an HDLC frame. The remote media gateway receives the HDLC frame, removes the media gateway control command, and takes the steps necessary to process the command. The command packet may include a packet header that identifies the type of command contained in the packet.