MACH Signs Contract With Vivacell To Deliver Financial Clearing And IOT Check Solutions And Extends Contract For Data Clearing

Luxembourg, 27th November, 2007 – MACH, the leading global clearing and settlement partner for mobile based transactions, today announced that VivaCell, a subsidiary of Mobile TeleSystems OJSC (NYSE: MBT), has chosen MACH’s Financial Clearing and IOT Check (Inter-Operator Tariff) solutions, whilst also extending their contract for MACH Data Clearing.

The announcement with VivaCell represents a further endorsement of MACH’s technology within the East European mobile market.

VivaCell is the leading Armenian mobile operator in a country with a population of more than 3 million people, a growing telecommunications sector and increasing investment levels. VivaCell manages and operates a state-of-the-art mobile services network which transcends national borders, integrating Armenia with other mobile networks around the world.

VivaCell considers the diversification of its products and services, flexible tariff plans and proximity to its customers as essential factors in keeping and expanding further the high levels of success already achieved.

VivaCell has invested in MACH IOT Check, which proactively ensures that Inter-Operator Tariffs (IOTs) are correct when a user is roaming. MACH IOT Check ensures that VivaCell are proofed against incorrect tariffs, and more importantly that their subscribers don’t incur excess roaming charges. This is vitally important as VivaCell today is working with 265 mobile operators, thus allowing its subscribers to roam in 145 countries.

VivaCell General Manager Ralph Yirikian commented, “MACH’s solution helps VivaCell to improve further its billing system, which surely makes the usage of VivaCell services for our roaming subscribers more comfortable and clear.”

VivaCell’s adoption of MACH Finance and IOT Check from MACH’s advanced suite of solutions runs alongside MACH Data Clearing, a contract that has been extended by VivaCell. MACH Data Clearing enables VivaCell and mobile operators all over the world to exchange billing and settlement information on which the whole business concept of international roaming is based. MACH Finance is the globally renowned, proven financial clearing & settlement solution subscribed to by many leading operators.

Terence Ledger, Chief Commercial Officer – MACH commented, “We are delighted to extend our partnership with VivaCell, by not only renewing our existing Data Clearing contract, but by also delivering MACH Finance and MACH IOT Check”. Terence Ledger concludes: “Eastern Europe is a big market for MACH, and extending contracts and supplying our solutions to companies like VivaCell is a great endorsement of our work in that market.”