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
Cloud-based Unified Communications Service Provider, Hardware, Hosted VoIP billing service provider, Incumbent PTT, International VoIP Wholesale Provider, Internet Telephony Service Provider, Internet VoIP and Video Conferencing Service Provider, Network
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