COLOR RING BACK TONE SERVICE SYSTEM AND METHOD IN CDMA COMMUNICATION SYSTEM

摘要

The present invention discloses a system and a method for implement color ring back tone service in CDMA communication system. In the system provided by this invention, each HLR (Home Location Register) at the mobile communication network side is connected to the additional SPS (signaling process system) via signaling network, respectively. The users in the HLR register the color RBT (ring back tone) service on the SPS connected to this HLR. In the method provided by this invention, when a calling party makes a call to a called party and this called party has registered the color RB" service on the SPS, the GMSC/MSC at the calling side exchanges massages with the HLR through the SPS, and the SPS routes the calling sent by the said MSC/GMSC to the MSC to which the called party belongs through color ring center by using virtual color ring center address. And then the color ring center plays the color RB" to the calling party, stops to play the color RB" if the called party hooks off, and switches on the talk.