SUNDAY Selects Schema's Powerful UMTS Network
3/30/2005

Significant network coverage and quality improvement implementing Schema's UMTS OptiPlanner product.

Cannes, France - March 30, 2005 - Schema, a global provider of industry-leading network optimization, simulation and related management solutions, announced today that it has signed an agreement with SUNDAY Communications Limited of Hong Kong, to deploy Schema's UMTS OptiPlanner to support SUNDAY's plans for an aggressive rollout of their UMTS network.

Under the agreement, SUNDAY will deploy Schema's UMTS OptiPlanner, a field-proven automatic RF cell planning and optimization solution that produces optimal cell parameter configurations.

Bruce Hicks, Group Managing Director, SUNDAY Communications Limited, discussed the company's decision, "Our continued success in this intensely competitive market depends on improving coverage and quality in a cost effective manner, to maximize our customers' satisfaction. During the recent project with Schema's OptiPlanner, we reduced both the number of cell sites and antennas, and at the same time significantly reduced the level of dropped calls in the pre-launch network. We achieved a 19% improvement in combined Ec and Ec/Io coverage for voice service, and a 15% improvement for video calls. These results speak for themselves-they are quite significant."

"SUNDAY strives to deliver the very best network quality to its subscribers, and we are pleased to be instrumental in this process," said Andy Silberstein, Schema COO. "This market is extremely challenging in terms of its highly competitive 3G environment. Our relationship with SUNDAY adds to our recent success in the Hong Kong and Asian market as a whole, and we continue to look forward to testing and implementing our product roadmap in these challenging environments.

Schema's network optimization, simulation and related management solutions will be on display at 3GSM in Cannes, February 14-16, meeting room N6 in Hall 6.

About SUNDAY
SUNDAY is an innovative developer and provider of wireless communications and data services in Hong Kong. SUNDAY began commercial operations in 1997. The company`s core strategy is to capitalise on the convergence of wireless communications and data technologies to develop innovative services and solutions. Today, SUNDAY enhances people's lives by delivering targeted wireless data applications and services to meet their specific lifestyle needs. Owning a 3G mobile license, SUNDAY is well positioned to further develop a more advanced range of 3G wireless services to further enhance people's lives by providing innovative, relevant and value-driven services. For more information, please visit www.sunday.com.

About Schema
Schema is a global provider to telecom operators of industry-leading network optimization, simulation and related management solutions that increase network performance and efficiency, reduce costs and improve network visibility, across voice and data networks. The company has been recognized by Deloitte and Touche as one of the fastest growing and most innovative high tech companies in North America, Europe, and Israel.

Schema's solutions are deployed and benchmarked by leading wireless operators worldwide, including Verizon Wireless, Cingular Wireless, AT&T Wireless, U.S. Cellular, BellSouth International, Hutch India, Sunday Hong Kong, Cellcom Israel and Pelephone Israel. For more information about Schema, visit the company's web site at www.schema.com.




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