Xpherix Goes Wireless: New Mobile Data Service Provides Connectivity for Mobile Professionals

San Jose, California, -- March 3, 2003-- Xpherix Corporation, the leading provider of personalized mobile connectivity, today announced iPhonebook™ wireless access for mobile professionals. iPhonebook, a mobile data service, provides subscribers with an online address book that wirelessly links their mobile phone to their existing Personal Information Manager (Microsoft Outlook, Outlook Express and Palm Desktop) content.

iPhonebook offers subscribers one-device convenience for all their address book numbers (business, mobile, home or pager). Subscribers can use their mobile phone to search through their contacts, find the desired number, and with one touch, get connected. With iPhonebook, the mobile phone display can also be used to browse other personal contact information such as addresses, email addresses and the Notes field. No more carrying electronic organizers, laptops or bulky address books.

"Wireless access to an entire address book is a service critical to subscribers, especially mobile professionals, who depend on contacting people for their livelihood," said Nick Walker, president and CEO, Xpherix. "Additionally, despite subscriber adoption growth predictions, wireless carriers are concerned that subscribers will not use the data services that new networks are capable of delivering. iPhonebook provides a valuable service to the subscriber while introducing the benefits of data services."

Unlike ring-tones and games, iPhonebook helps satisfy the need behind purchasing a mobile phone - to communicate. iPhonebook subscribers continually use wireless carrier networks to access content and then make voice calls based on the data.

"As wireless penetration reaches a saturation point, wireless carriers the world over are increasingly turning to non-voice services, such as iPhonebook, to drive revenues," said Rachel L. MacAulay, Program Director, Mobile Pervasive Communications at The Kelsey Group. "iPhonebook is unique in that it holds the key to driving both voice and data usage from a wireless device, allowing carriers to book revenues on both sides of the house."

According to recent Yankee Group research forecasts, there was 23.4 million mobile data service subscribers in the US at the end of 2002. That number is expected to grow 83% every year for the next four years, bringing the total to more than 128 million subscribers by 2006 and generating revenue totaling $5.8 billion.

iPhonebook also incorporates patent-pending Xpherix Phone Number Parser. The Phone Number Parser is proprietary technology that cleanses user-entered data - such as data entered into Microsoft Outlook - and makes phone numbers dial-able from a mobile phone or through a directory assistance operator with call completion.

Note to editors: iPhonebook has been selected by CTIA's Wireless Widgets Showcase. The Wireless Widgets Showcase will take place March 18, in booth 4514, Hall E, at CTIA in New Orleans.