December 15, Newbury, UK – Eurotel Praha, spol. s r. o., the Czech Republic’s leading wireless network operator and a member of the Telefonica global communications group, has selected UK-based wireless network optimisation specialists Arieso to maximise the performance of its new 3G network, which went live at the start of December.

Eurotel will use Arieso’s pioneering algorithm-based product Altaro to optimize its 3G network, which includes the new High Speed Downlink Packet Access (HSDPA) technology upgrade, in order to deliver the best possible levels of service to its subscribers. With HSDPA in particular, Eurotel will be able to provide the highest quality delivery of advanced data and multimedia services, such as video telephony, streamed broadcast content and large-scale file transfers.

In competitive trials, Arieso’s Altaro consistently outperformed its rivals, and achieved a 20% improvement in such key performance indicators (KPIs) as network coverage, dropped call numbers, and data speeds.

Altaro uses unique algorithm technology to process network performance data from multiple sources, including network planning tools, switch counters and drive-testing solutions. Altaro combines this data alongside elements such as base site location, power levels, antenna type, direction and tilt, to automatically generate a network configuration whose performance best meets the parameters set by the operator. For operators, Altaro is the most cost-effective solution to enable the best possible coverage, traffic capacity and quality of service for 2G, 2.5G and 3G mobile networks for least cost.

Commenting on Arieso’s appointment, Pavel Kolár, Chief Network Officer of Eurotel Praha said, "All of us at Eurotel are committed to the success of our 3G service. To achieve this goal we wanted to select a network optimisation tool that would quickly establish 3G service of a high quality. From the suppliers in our tender we selected Arieso because Altaro fully met our expectations. We are close to UMTS launch and Altaro helps us to optimise our growing initial network so that we can offer our customers the sort of attractive services and reliability necessary for 3G."

Shirin Dehghan, Arieso CEO, said, “Altaro’s impressive results identify it as the most cost-effective solution for Arieso’s network operator customers to achieve the best possible performance from their network in order to deliver the best possible service to their subscribers. Network optimisation is a crucial business issue for network operators. By using Arieso’s intelligent optimisation technology, operators can improve their network performance and maximize their return on investment, which has a real impact upon their bottom line. We are delighted to be Eurotel’s partner of choice for 3G network optimization.”

Earlier this year, Arieso announced a contract with UK network operator O2 to optimise its 3G network. Arieso technology continues to be trialed by network operators around the world who want to harness the maximum capability of their radio networks and deliver the highest quality of service to customers.

About Eurotel

Eurotel Praha is a limited liability company (spol. s r. o.), and is owned (100%) by CESKÝ TELECOM, a. s. Eurotel Praha, spol. s r.o. reported almost 4.5 million customers in its nework at the end of September 2005. Eurotel’s mobile networks cover 99 percent of the population of the Czech Republic (more than 10 million people).

Eurotel is the only mobile operator in the Czech Republic which offers the two most advanced GSM (wireless) data transfer technologies. General Packet Radio Service (GPRS) and GSM High-Speed Circuit-Switched Data (HSCSD) are available to contractual customers and customers with prepaid services. Eurotel is the first operator in Europe to offer the CDMA2000 1xEV-DO high speed Internet access in its 450 MHz network. Eurotel holds a UMTS license for the operation of 3rd generation mobile services and will start running the network within a few months.

For more information please visit www.eurotel.cz .

About Arieso
Arieso is a world-leading developer of unique, automatic network optimisation products and services, which deliver significant cost-savings to the operator community as well as a vastly improved mobile user experience. Founded by an expert team of technologists and industry professionals, the company uses a unique simulator-based approach that delivers optimal radio networks for 2G, 2.5G, 3G and HSDPA technology. Arieso, whose customers include O2, Vodafone and Eurotel Praha, is based in Newbury, Berkshire, UK.