Private Integrated Services Network (PISN); Mapping functions for the employement of a circuit mode basic service and the supplementary service user-to-user signalling as a pair of on-demand inter-PINX connections (Mapping/UUS)
专用综合业务网(PISN);使用电路模式基本业务和补充业务用户对用户信令作为一对按需PINX间连接(映射/UU)的映射功能
Contains the mapping functions for a pair of on-demand Inter-PTNX connections using a circuit mode basic service and the supplementary service User-to-User Signalling of a public ISDN at the same time.