Virtual subscriber service

摘要: A Virtual Subscriber Service (VSS) is a system and method for operators to provide multiple mutually exclusive telephone numbers, each with its own unique plan features, subscriber who associated single terminating device. VSS makes it possible manage communications directed toward any number his as if one of the numbers were only telephone. Further, in addition primary number, can originate or return missed from virtual More specifically, some embodiments involve use pre-paid account telecommunications service that has destination code well common device such mobile Advantageously, operator enables have an additional private without purchasing another multi-SIM card.