Customer Case Studies

Telekom Malaysia / Green Packet:
Why Telekom Malaysia chose Green Packet and GIPS to provide superior voice quality
Jun, 2008
Telekom Malaysia chose Green Packet and GIPS to enhances Voice Quality for "iTalk Buddy" service 

CERNET Koncept:
Koncept Network and GIPS Work Together to Provide Superior Voice Quality to the China Educational Research Network
October, 2007 
GIPS enhances Voice Quality for CERNET's 23-million users

 Yahoo!:
Yahoo! Improves Voice Quality and Customer Satisfaction through Integration of GIPS VoiceEngine Multimedia
August, 2006
Yahoo! Messenger with Voice leverages GIPS’ world class voice processing technology to become a market leading VoIP solution

V2 Tech:
China’s #1 video conferencing provider implements GIPS VoiceEngine PC VoIP solution
August, 2006
Fast testing and implementation speeds time to market for new V2 Conference 5 videoconferencing system

TelTel:
The promise of VoIP lies with the Power of SIP
August, 2006
Global IP Sound enables TelTel to deliver the next-generation SIP Communication Platform

FreePP:
Breaking the PC to PC connection and enabling people to people connection - FreePP takes VoIP to the next level
August, 2006
Fast testing and implementation speed time to market for new FreePP services

VOICE OVER WLAN

Two way VoIP over wireless nets requires low latency
December 1st, 2003
The challenges in deploying VoIP over WLAN stem mainly from issues related to access point congestion and to those that affect the link quality. The result is that WLANs experience significantly higher delay, with more network jitter and packet loss, than wired LANs. When several users are connected to the same access point, congestion easily occurs. The result is jitter that can be very significant, especially if large data packets are present. Also, the efficiency of the system quickly deteriorates when the number of users increases.

Finding Harmony Between VoIP and WLANs
November 5th, 2003
Wireless LAN systems accentuate the delay, jitter, and packet loss problems experienced in traditional VoIP architecture. But, through good sound processing techniques and QoS enhancements, designers can overcome these challenges.

The Importance of Latency Management for Wireless VoIP
September 26th, 2003
This paper was presented at the 2003 Communication Design Conference in San Jose, CA as well under the EETimes Web site. Many factors affect the perceived quality in two-way communication. An extremely important parameter is latency.

Internet Telephony over WLANs
June 2nd, 2003
This paper was presented at the 2003 USTA's Telecom Engineering Conference (TEC) at Supercomm in Atlanta Georgia. The paper address the issues that most seriously impede the use of IP telephony over WLANs, including spectrum congestion and interference.

Intel Case Study: Wireless VoIP Ready for Prime Time
January 15th, 2003
This case study discusses the optimization of Global IP Sound's VoiceEngine in Pocket Presence's Running Voice IP on Intel's XScale Processor.

Voice Over 802.11 Case Study
June 2nd, 2003
"Wi-Fi" wireless data links and increasingly powerful PDA devices are triggering a new phase of growth in Internet telephony by bringing real-time connectivity to portable, instant-on devices.

ECHO CANCELLATION

Sound Quality Evaluation: Acoustic Echo Cancellation
Fall, 2003
As voice over IP (VoIP) is emerging as a viable alternative to PSTN (public switched telephony networks) the performance of VoIP devices is expected to match that of traditional PSTN equipment. Global IP Sound selected five commercially available hands-free-capable IP phones to perform a series of subjective evaluations of the overall and specific aspects of quality related to acoustic echo cancellation.

White Paper: Network and Acoustic Echo Issues in Voice-Over-Packet Telephony Systems
October, 2002
This paper discusses how echo contributes to poor audio quality in VoP telephony, and examines how other factors that are specific to IP networks, such as delay, jitter and packet loss, increase echo problems. It also describes signal processing software-based solutions designed to address echo-related quality issues in packet voice communications.

GIPS SOUNDWARE™

White Paper: iLBC - Designed for the future
October, 2004

Achieving the Highest Voice Quality for VoIP Solutions
October, 2004
This paper was presented at the 2004 GSPx "The International Embedded Solutions Event" in Santa Clara, CA. The paper discuss the issues developers must address to ensure the highest possible voice quality in VoIP-enabled devices.

White Paper: Speech coding and speech quality in IP Telephony
October, 2001

White Paper: Third-party Evaluation of Global IP Sound Edge Device QoS Solutions for VoIP
October, 2001

GIPS NetEQ™ - A Combined Jitter Buffer Control/Error Concealment Algorithm for VoP Gateways

2002
Please contact a GIPS sales representative for more information about the NetEQ benefits in a gateway environment.

Case Study. Measurement of latency, packet loss, and jitter
2002
All international calls are affected by latency, packet loss, and jitter. To better understand the nature of these Quality of Service (QoS) problems, Global IP Sound monitored and analyzed the transmission characteristics of the Internet between several endpoints over a four-week period.