AddPac IPNext190 Installation Manual page 127

IPNext 190 System Installation Guide
HTTP
IPSec
IPv6
ISP
ITU-T
IVR
perform call transfer.
Stands for Hypertext Transfer Protocol. This protocol enables a Web browser or a Web
server to transfer files such as text files and graphic files.
Stands for Internet Protocol Security protocol. IPSec is a still developing standard for the
security of networks or the packet processing layer of network communications. In the
previous security techniques, security has been included in the application layers of a
communication model. IPSec is particularly useful for the implementation of remote user
access through dial-up access to Virtual Private Networks (VPN) and regular private
networks. The main advantage of IPSec is that security can be ensured without replacing an
individual user PC with a new one. Cisco takes the initiative of suggesting IPSec as the
standard, and has embedded support to this feature into its network router.
IPv6 is the latest IP, and has been embedded into part of IP support into many products
including the operating systems of PC. IPv6 is called IP Next Generation (IPng), that is the
next-generation IP. IPv6 is the formal IETF standard. IPv6 is designed as an evolutional
version of the currently used IP version 4. Network hosts or intermediate nodes that adopt
either IPv4 or IPv6 can process any packets formulized by either IPv4 or IPv6; thus, the
users and service provides can upgrade their IP to IPv6 individually without collaboration.
Stands for Internet Service Provider. ISP refers to service providers that provide Internet
access services, Web site construction and Web hosting services to individuals or
enterprises. ISP has devices and communication lines required for Internet access, and large
ISPs have their own high-speed dedicated lines in order to provide services that have better
quality and are less dependent on telephone network service providers to their customers.
The large nationwide ISPs of the U.S. are AT&T WorldNet, IBM Global Network, MCI,
Netcom, UUNet, and PSINet. Those of Korea are INet, Channeli, Netsgo, and Netian. The
users access the Internet through online service providers. The main online service
providers of the U.S. are America Online and Compuserve, and those of Korea are
Chollian, Unitel, and Hitel.
Stands for International Telecommunication Union Telecommunication Standardization
Sector. This is an international organization that develops global standards on
communication technologies. ITU-T performs the previous tasks of CCITT.
Stands for Interactive Voice Response. IVR refers to a system that provides data in the form
of recorded messages through phone lines as a response to user input in the form of human
voice or mainly DTMF signal processing. Examples are banks that allow you to check
balance by using a phone or automated stock quotations system.
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