VPDN(Virtual Private Dial－up Networks)

VPDN(Virtual Private Dial－up Networks) the realization of VPDN is through a tunnel, the enterprise network data package in the tunnel transmission. Tunnel technology is the basic process in the source network and public network interface data as the load is encapsulated in a can on transmission data format, in the purpose of local area network and public network interface data decapsulation, remove the load. The encapsulated packets pass logical pathway is known as the" tunnel". To make the data to be successfully package, transport and decapsulation, communication protocol is the assurance of the core.

VPDN is based on a dial-up access ( PSTN, ISDN ) virtual private dial-up network business, can be used to cross area group intranet, professional information service provider network, financial public service network, bank access services network services.

Scope of application

Dispersed locations, in all over the branches, moving many users, for example, distance education enterprise user user.

Personnel is dispersive, through long-distance telecommunications and even international long-distance means to contact the user. On line security and availability of certain requirements of users.

In addition, through VPDN technology, can be realized on the specific site closure, to the small ISP and large user groups to provide a multiple ports, wholesale business.

( VPDN -- Virtual Private Dial-up Network virtual dialing private network ), the business name " network", is refers in the China public multimedia communication network, the access means extending on to dial, it means, while allowing access, and the seamless combination, comprising a means of providing multiple access virtual special network.

VPN can be classified as: VLL ( Virtual Leased Lines ), VPDN ( Virtual Private Dial Networks ), VPRN ( Virtual Private Routed Networks ...