Ay-program (mobile callback, callback from a mobile) can request call (callback)and monitor the balance of voip-operators pctel.ru, comtube.ru, sipnet.ru and many operators of Betamax / Dellmont(Nonoh.net, telbo.com, voipdiscount.com, powervoip.com, justvoip.com, 12voip.com, voipwise.com, actionvoip.com).For example, you can call from your russian mobile phone to other russian mobile phone for 2 rubles per minute !Ay-program allows: 1) Request the Call(callback). You specify the phone number you want to connect, and your phone number username and password are taken from the program settings. You can enter phone number manually or select it from phonebook.2) connect two phones (callback). You enter two phone numbers: "call from"-number and "call to"-number (for example, you can connect your friends with other people).4) recent calls. View and reorder recent calls (there are similar functions in the phone).5) Balance (balance). Balance request (how much money you have in the account).6) Setting. You once typing your username, password, phone number, voip-operator name and click "Save." When you run the program later the entering of these data is no longer required.7) Help. Instructions how to use the program.