WorldCell to Introduce Technology to Reduce Cost of International Roaming

Silver Spring, MD–July 1, 2005 – WorldCell announced today that it has filed a patent and will operationalize technology designed to reduce the cost of international roaming.  Currently, international roamers get charged for incoming calls which are diverted to voicemail, and WorldCell’s technology is designed to eliminate these charges.

“A little known fact in international roaming is that roamers may get charged roaming as well as international call charges when an incoming call is diverted to voicemail” stated Lokdeep Singh, WorldCell’s Director of Engineering.  “Our data suggests that 15-20% of international roaming calls get diverted in such a fashion.  It can be difficult for customers to understand why they are being charged for calls they do not actually answer.  Our patent and our technology is designed to eliminate these charges.”

WorldCell intends to make this technology available to its international roamers utilizing its Viking SIM, as well as to its carrier partners which utilize its RSB Ltd. subsidiary’s Interstandard Roaming Platform later this year.

About RSB Ltd.
RSB Ltd. is a Bermuda company and a subsidiary of WorldCell, Inc.  RSB's cross protocol roaming gateway permits roaming with GSM carriers in more than 130 countries through a single agreement; transmission and clearing of roaming records and the required conversion to and from CIBER and TAP; invoicing and netting based on cleared roaming records and settlement of invoices; and fraud management through tracking of high usage across countries and networks.
RSB's cross protocol mediation platform offers SS7 signaling-the conversion to and from ANSI and ITU standards and a SS7 signaling worldwide network covering over 300 destinations; and a mediation platform made up of an HLR, VLR and Authentication Center that will perform the necessary conversion between CDMA/TDMA and GSM.  RSB delivers as well terminal fulfillment and provisioning. Subscribers' local AMPS, CDMA, or TDMA numbers will be mapped to a GSM SIM card and handset, provided by RSB, allowing subscribers to use their local numbers while roaming.

About WorldCell
WorldCell is a leading wireless services company providing global voice and data mobile services for government, enterprise and mobile professionals. WorldCell is based in Silver Spring, Maryland, USA with domestic offices Washington, DC, and international offices in Germany, Iceland, Bermuda and Brazil.