Notification about the incoming calls, addressed to your land line or office phone, coming to your cell phone. For instance, if you had a call to the office at the moment when you were unavailable, a notification about the missed call will come to your mobile phone.
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
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