ETSI TS 102 424-2005 电信和互联网融合业务及高级网络协议(TISPAN).支持公民和当局在紧急情况下通讯的NGN网络的要求(版本1.1.1)
Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Requirements of the NGN network to support Emergency Communication from Citizen to Authority (V1.1.1)