The service offered by telephone companies allowing creating the telephone numbers on the same line where the existing number is. The call tone for every number will be different from another. There is also an opportunity to program a custom ring tone for the incoming call.
Bisatel terminaison voip sip iax.
bisatel callshop, call center.
Distribution de minutes voip à prix ultra discount.
Bisatel switch, solution de gestion de services voip pour clients.