The selective call acceptance allows controlling incoming calls by making a list of telephone numbers which you are ready to accept. But incoming calls from subscribers that are not listed are directed to the answering machine by which the caller is informed that you do not accept calls at the moment.
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
Read more