Terms Used In This Guide - Avaya 4600 Series Administrator's Manual

Introduction
Document Organization

Terms Used in This Guide

802.1p 802.1Q defines a layer 2 frame structure that supports VLAN identification and a QoS mechanism
802.1Q usually referred to as 802.1p, but the content of 802.1p is now incorporated in 802.1D.
ARP Address Resolution Protocol, used for example, to verify that the IP address provided by the DHCP
server is not in use by another IP Telephone.
CELP Code-excited linear-predictive; voice compression requiring only 16 kbps of bandwidth.
CLAN Control LAN, type of Gatekeeper circuit pack.
DHCP Dynamic Host Configuration Protocol, an IETF protocol used to automate IP Address allocation and
management.
DiffServ Differentiated Services, an IP-based QoS mechanism.
DNS Domain Name System, an IETF standard for ASCII strings to represent IP addresses.
Gate- H.323 application that performs essential control, administrative, and managerial functions in the
keeper media server. Sometimes called CLAN in Avaya documents.
HTTP Hypertext Transfer Protocol, used to request and transmit pages on the World Wide Web.
IETF Internet Engineering Task Force, the organization that produces standards for communications on the
internet.
LAN Local Area Network.
LDAP Lightweight Directory Access Protocol, an IETF standard for database organization and query
exchange.
MAC Media Access Control, ID of an endpoint.
NAPT Network Address Port Translation.
NAT Network Address Translation.
PHP Hypertext Preprocessor, software used to assist in the format and display of web pages.
PSTN Public Switched Telephone Network, the network used for traditional telephony.
QoS Quality of Service, used to refer to a number of mechanisms intended to improve audio quality over
packet-based networks.
RSVP Resource ReSerVation Protocol, used by hosts to request resource reservations throughout a network.
RTCP RTP Control Protocol, monitors quality of the RTP services and can provide real-time information to
users of an RTP service.
RTP Real-time Transport Protocol, provides end-to-end services for real-time data (such as voice over IP).
SIP Session Initiation Protocol; an alternative to H.323 for VoIP signaling.
TCP/IP Transmission Control Protocol/Internet Protocol, a network-layer protocol used on LANs and
internets.
TFTP Trivial File Transfer Protocol, used to provide downloading of upgrade scripts and application files to
the IP Telephones.
UDP User Datagram Protocol, a connectionless transport-layer protocol.
VLAN Virtual LAN.
VoIP Voice over IP, a class of technology for sending audio data and signaling over LANs.
WML Wireless Markup Language, used by the 4620 web browser to communicate with WML servers.
12 4600 Series IP Telephone Release 2.1 LAN Administrator's Guide
July 2004