Zhone Technologies Profile

Zhone Technologies Patent Grants

System for real time voice quality measurement in voice over packet network

Patent Number 7197010 - March 27, 2007

In assessing the capability of an IP based network to support toll telephony service, objective measurements of Speech Quality are taken. A…

Flexible SONET access and transmission system

Patent Number 6768745 - July 27, 2004

A SONET network interface for interconnecting at least one high speed unit (HSU) with at least two low speed interface units (LSUs) to enable…

Acoustic echo processing system

Patent Number 6744887 - June 1, 2004

A system and method of Acoustic Echo Cancellation includes a digital filter used to estimate the echo path is split into 2 filters: one fixed…

Mechanism for 1:1, 1+1, and UPSR path-switched protection switching

Patent Number 6690644 - February 10, 2004

A mechanism for 1:1, 1+1, and UPSR path-switched protection switching, particularly for optical interface units in synchronous optical…

Flexible SONET access and transmission systems

Patent Number 6667973 - December 23, 2003

A SONET network interface for interconnecting a high speed unit (HSU) with low speed interface units (LSUs) to enable transmission of signals…

Zhone Technologies Federal Litigation Filings

In Re: Subpoenas to Qualcomm Atheros, Inc.

California Southern District Court - August 1, 2016

Wetro Lan LLC v. Zhone Technologies, Inc.

Texas Eastern District Court - January 30, 2015

TQ Delta LLC v. Zhone Technologies Inc.

Delaware District Court - November 4, 2013

Relay IP Inc. v. Zhone Technologies Inc.

Delaware District Court - May 3, 2013

Westerlund et al v. Zhone Technologies, Inc.

Florida Southern District Court - June 15, 2010

Zhone Technologies Federal District Court Decisions

Atwater Partners of Texas LLC v. AT&T, Inc. et al

Texas Eastern District Court - March 18, 2011

MEMORANDUM OPINION and ORDER denying Deft Adtran Inc's motion to dismiss. Signed by Judge T. John Ward on 3/18/11. (ehs, )