Research on the Implementation of Emergency Call for Vo LTE Users
Zhu Xiao-ji · Mobile Communications · 2015
According to the analysis on the troubles in the technical implementation of emergency call in existing IMS network, the system architecture and implementation flow of emergency call for Vo LTE users are re searched in this paper. By comparing the technical implementations of both fixed IMS and mobile Vo LTE users, the problems in the implementation of emergency call for Vo LTE users are presented. It is suggested that operators should specify the requirements for emergency call in the light of local regulatory policy to promote the product research, development, application and deployment for equipment and terminal enterprises.