CJSC “Babilon-Mobile” is the largest mobile communications operator in Tajikistan providing broad range of GSM, UMTS and HSDPA services. This turnkey project was aimed for design, deployment and tuning of large scale IO-intensive transactional database infrastructure for the zero downtime billing system. After the launch of the new infrastructure the customer utilized its capabilities and rapidly increased subscriber base by delivering competitive services to the masses, becoming the leading GSM provider in the country.