Improving User Capacity and Disaster Recovery Time in IP Telephone Service Systems
Hiroshi Shibata, Kouki Minamida, Hiroshi Miyao, Takashi Nambu, Toru TAKAHASHI · NTT technical review · 2015
The NTT Group is working on improving Internet protocol (IP) telephone networks and solving certain problems associated with them.Specifically, efforts are underway to improve the accommodation rate, reduce network operating costs when the number of network users increases, and reduce service recovery time when a network is damaged because of a natural disaster.To resolve these problems, we developed a system architecture that simplifies the operation of IP telephone networks and uses network equipment much more efficiently.This is possible with a subscriber data management server.We describe here our new network architecture, the mechanism to solve these problems, and the effect it has on IP telephone networks.