NMS Communications Helps China Unicom Improve Mobile Call Quality

2/11/2003 - China Unicom has improved the call experience for its Shanxi Unicom subsidiary's 1.4 million subscribers by installing voice quality enhancement products from NMS Communications (Nasdaq: NMSS), trusted supplier of communications products and services. NMS' voice quality enhancement products employ Studio Sound®, the only software solution that pairs state-of-the-art noise reduction and noise compensation with other robust voice quality enhancement features to create an optimal listening environment for both parties in a conversation which is particularly important in noisy mobile settings. With Studio Sound, carriers like Shanxi Unicom can deliver a subscriber experience that is proven to result in better customer satisfaction, increased usage, higher retention rates, and, ultimately, greater revenue.

"Our voice quality is greatly enhanced with NMS' technology and products. We are impressed with the technology and how easy and cost effective it was to deploy in our GSM and CDMA networks," said Mao Jianzhuang, Deputy General Manager of China Unicom, Shanxi branch.

"People, particularly the heaviest users, make more calls in noisy environments and spend more time on them when the network has Studio Sound. And most mobile environments by nature are noisy cars, buses, trains, airports, and other public settings," said Clarke Ryan, senior vice president and general manager of NMS' Voice Quality Systems business. "China Unicom takes customer service seriously, and sees voice quality as a differentiator that will attract and retain subscribers. The company recognizes that its subscribers will spend more time on calls in more places if they can hear and be heard. It's as simple as that."

About Shanxi Unicom
As a subsidiary of China Unicom, Shanxi Unicom officially began operating on May 28, 2001. Now it provides mobile communications, paging, IDD, network services, and other valuable, revenue generating services to end users. Further information is available at http://www.sx165.com.

About NMS Communications
NMS Communications (Nasdaq:NMSS) helps its customers increase revenues and returns on investments by rapidly deploying new carrier-grade communications products and services. Every telecom operator and communications equipment provider on the Global Fortune 50 list relies on NMS Communications for technology-leading products and services, including system building blocks, systems, consulting, and support. Visit www.nmscommunications.com for more information.

NMS Communications and is a trademark of NMS Communications Corporation. Studio Sound is a registered trademark of NMS Communications Corporation.

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