Research On The Application Of CRBT Technology About GSM Communication System

Since the first mobilephone enters the Chinese market,the handset has become the essential communication facilities.People's needs regarding course of communications in service personalization also become more and more intense. The people not only have more and more many requests to the machine style and the function,but also hoped the irrevocable ring can have the improvement,The Color Ring Back Tonel service arises at the historic moment.The personalization ring-back tone service,which called the Color Ring Back Tone service,uses playback and telephone channel bridge joint function of the independent intelligence peripheral, and substitutes tradition monotonous ringing tone by richly colorful music. The calling subscriber will hear music ting but will not be the ordinary ring-back tone in the call process. This service is applied by the called subscriber, and may act according to the different calling subscriber classification to provide the different ring-back tone.This article have made the exhaustive description On the CRBT service introduction,the formulation and the realization plan. The user may applies this service through many kinds of ways. Does in it is called time,Music or DIY sound recording which made for the calling subscriber is broadcasted. The CRBT service realization plan has the intelligent network way and the switch way two kinds, At present these two ways have the question of the route to be circuitous and unable to hear music in interprovincial roam. In order to resolve these contradictions, The China mobile communications co.,ltd has promoted the new CRBT service standard. This standard point out that the target net way will be development ships,meanwhile it proposes the standard and the progress request for various provincial offices'CRBT equipment transformed.This article has done the research to the Tianjin Mobile CRBT service present situation and the development situation. The CRBT service is deeply welcomed by user communities since it is promoted by Tianjin Mobile the fourth quarter in 2003,The user quantity increases unceasingly,and the network has been Carried on successively several time expanded accommodates. Tianjin Mobile CRBT service is realized through intelligent network way. Along with the Promotion of the group...