VPN Service Design Based on the BUPT-IN System

摘要

The BUFF-IN system is an experimental Intelligent Network(IN) system designed and implemented by the National Laboratory of Switching Technology and Telecommunication Networks according to the international standards. VPN is one of the services implemented on this system.This paper introduces the principles and methods of design,describes the partitioning priority principles with several examples and discusses on some topics such as usage convenience,billing standards,interconnections with other types of networks,interaction with other IN services.