Introduction
SCL (Select Caller List) is a value addition to mobile peer to peer calling; Subscriber can define his/her caller list or Black List (Barred numbers) for incoming calls. It is a customized solution in which call terminating party (called party) can barr his/her selective incoming calls (calling party) or can even define his/her allowed Caller List . It is a subscription based service, in which the called party would have the choice to define what prompt needs to be played back to the calling subscriber. The subscriber will also have an option whether he wants to get informed of these calls through SMS or not. During call setup (before terminating party Called), this service provides pre-check to the calling party by introducing a special entity between the caller and the called party. This does not affect the basic call setup process in any way.