Considering the characteristic of a campus network accessible to subsystem,a high availability accessible to subsystem model based on backup routing through ask and dial is designed and implemented after analyzing the subsystem structure,availability and three backup methods through dial.

In this article,it tells you in detail the comprehensive solution for the user who dial to internet to assign private IP address and convert it by the Router NAT technology,then testify the identification of the user who dial to internet with AAA technology,it is widely used in internet.

Development of a non-central-switch amplifying call and talking telephone system with dialing;

Ethernet communication, which provides high speed and credibility, data storage and management which use file to make look-up easy, analysis of data, dialing, GUI and setting of parameter are deal with.

By introducing the resolution of data transmission in a management system of a medical company, the setting and application of dial-up remote access are analyzed, and the practicability of dial-up remote access is explained.

The current VPDN(virtual private dial-up network) is mainly carried by means of PSTN/ISDN.

But some intranet users may break the rules and connect to the internet either through Dialup or other ways.

Exploring Technologies for Monitoring Illegal Dialup to External Networks;