HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual page 753

IPX Internetwork Packet eXchange. A Layer 3 networking protocol used in Novell
NetWare operating system environments. Like UDP/IP, IPX is a datagram
protocol used for routing packets in connectionless communications. For
more information on IPX use in Ethernet networks, see RFC 1132 (at http://
www.ietf.org/rfc/rfc1132.txt).
IPXCP Internetwork Packet eXchange Control Protocol. An NCP in the PPP protocol
suite. Peers establishing a PPP session exchange IPXCP to negotiate options
for the IPXCP packets that will be encapsulated in PPP frames. For more
information on IPXCP, see RFC 1552 (at http://www.ietf.org/rfc/rfc1552.txt).
ISDN Integrated Services Digital Network. A type of circuit-switched telephone
network system designed to allow devices to send voice and data digitally over
ordinary telephone copper wires. More broadly, ISDN is a set of protocols for
establishing and tearing down circuit-switched connections and for providing
advanced call features to an end user. An ISDN connection is divided into two
types of channels: bearer (B) channels, which transmit voice and data over
the line, and data (D) channels, which transmit signals for controlling, setting
up, and disconnecting the call. Each B channel supports data transfer rates of
64 Kbps. BRI ISDN provides two B channels; PRI ISDN supports up to T1 (24
B channels) or E1 (30 B channels) bandwidth. See also BRI and PRI.
ISO International Standards Office. The group responsible for setting CCITT/ITU
standards for the transmission of digital voice and data over ordinary
telephone copper wire, as well as over other media.
ISP Internet Service Provider. A company that provides individuals and businesses
access to the Internet and other related services such as website building and
virtual hosting. An ISP owns and maintains the equipment and the telecom-
munication lines that allow it to have a Point of Presence (POP) on the Internet
for the geographic area served.
ITU-T International Telecommunications Union-Telecommunications Standardiza-
tion Sector. An international body created to foster cooperative standards for
telecommunications equipment and systems. For more information on ITU-T,
see their website at http://www.itu.int/.
IXC Inter eXchange Carriers. A telephone company that provides connections
between local exchanges in different geographic areas. IXCs provide interlocal
access and transport service as described in the Telecommunications Act of
1996. In the United States, IXCs include long-distance telecom carriers like
Sprint, AT&T and MCI.
Appendix B: Glossary
B-27