KS X 4316-2021
信息技术 系统间的电信和信息交换 专用综合业务网 交换局间信令协议 无线终端呼叫处理附加网络功能
Information technology－Telecommunications and informationexchange between systems－Private Integrated Services Network－Intere-exchange signalling protocol－Wireless terminal call handlingadditional network features