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Glossary Page 141
Glossary (Cont.)
IRC Internet Relay Chat. A service that enables an Internet users to participate in a conversation
on line in real time with other users. An IRC channel, maintained by an IRC server, transmits
the text typed by each user who has joined the channel to all other users who have joined
the channel. Generally, a channel is dedicated to a particular topic, which may be reflected in
the channel’s name. An IRC client shows the names of currently active channels enables the
user to join a channel, and then displays the other participants’ words on individual lines so
that the user can respond.
MAPI Messaging Application Programming Interface. A Microsoft’s Windows application which is
part of WOSA (Windows Open Services Architecture). MAPI is a set of API functions and a
OLE interface that lets messaging clients, such as Microsoft Outlook, interact with various
message service providers, such as Microsoft Exchange Server and various computer
telephony servers running under Windows NT server. Overall, MAPI helps Exchange
manage stored messages and defines the purpose and content of messages – with the
objective that most end users will never know.
MSN Multiple Subscriber Numbering
NAT Network Address Translation. The process of converting between IP addresses used within
an intranet or other private network and Internet IP addresses. This approach makes it
possible to use a large number of addresses within the stub domain without depleting the
limited number of available numeric Internet IP addresses.
NNTP Network News Transfer Protocol. The Internet protocol that governs the transmission of
newsgroups.
POP3 Post Office Protocol 3. A protocol for servers on the Internet that receive, store, and transmit
e-mail and for clients on computers that connect to these servers to download and upload e-
mail.
PAP Password Authentication Protocol. A method for verifying the identity of a user attempting to
log on to a PPP server. Passwords are sent without encryption and the originator can make
repeated attempts to gain access. This authentication method must be used if encryption is
not supported at the remote end.
PPP Point to Point Protocol. A protocol which allows a PC to connect as a TCP/IP host to a
network through an asynchronous port. PPP is commonly used for connection across the
PSTN from a PC to an ISP for purposes of Internet access. PPP includes error detection and
data protection features.
PPTP Point-to-Point Tunnelling Protocol. A specification for virtual private networks in which some
nodes of a local area network are connected through the Internet.
Q.Sig See DPNSS
PRI Primary Rate Interface. Provides 30B+D running at 1.544 megabits per second and 2.048
megabits respectively.
RAS Remote Access Services. A feature built into Windows NT that enables users to log into an
NT-based LAN using a modem, X.25 connection or WAN link. RAS works with several major
network protocols, including TCP/IP, IPX, and Netbeui. To use RAS from a remote node, you
need a RAS client program, which is built into most versions of Windows, or any PPP client
software. For example, most remote control programs work with RAS.
MAC Address
The physical address of the hardware device. (Identified at the Media Access Control layer in
the network architecture.)
RSVP Resource Reservation Setup Protocol. An Internet protocol developed to enable the Internet
to support specified Qualities-of-Service (QoS's). Using RSVP, an application will be able to
reserve resources along a route from source to destination. RSVP-enabled routers will then
schedule and prioritise packets to fulfil the QoS.
INDeX IPNC Cassette Administration Manual Glossary - Page 141
38DHB0002UKDD – Issue 7 (22/11/02)