关键词: 码分多址, 无线智能网, 增值业务, 呼叫状态模型, 非标准来话

Abstract: To solve the problem of restricted development of nonstandard valueadded services in code division multiple access network. A call model of terminating party of nonstandard service is analyzed with help of an examplesingle international mobile subscriber identification number(IMSI) multiple mobile station international integrated services digital network numbers(MSISDN) service．Combined with call forwarding no answer service based on switching control point, a new call model of terminating party based on transform of basic call state model (BCSM) is presented．Experiments verify the validity of the proposed call model to implement nonstandard valueadded services with the transform attribute of called party number．

Key words: code division multiple access, wireless intelligent network, value-added service, basic call state model, non-standard terminating call