METHOD AND SYSTEM FOR CONTROLLING COLOUR RING BACK TONE SERVICE IN IP MULTIMEDIA SUBSYSTEM

摘要

FIELD: information technology.;SUBSTANCE: method includes steps where: a CRBT service server receives a self-contained CRBT service call from a user, outputs to the user with an inviting tone signal, detects a key pressing operation performed by the user according to the inviting tone signal and controls the CRBT service for the user according to the key pressing operation.;EFFECT: enabling a user to directly control the CRBT service to achieve a technical effect consisting in saving labour resources.;7 cl, 4 dwg