O.S.S Corporation began to offer IP telephony and Internet services in the middle of 1999 year. In spring of 2000 it was on the top of independent ratings of the Russian IP telephony operators. Nowadays company owes the most powerful access pool to provid
GTS provides next-generation communications solutions to enterprise customers ranging from Contact Centers and Business Process Outsourcing Centers to Service Providers. We have been committed to offering a competitive alternative in the world marketplac
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