Filter
Top Products
4600 Series IP Telephone LAN Administrator’s Guide
Document Organization
1-4
Terms Used in This Guide 1
802.1p
802.1Q
802.1Q defines a layer 2 frame structure that supports VLAN identification and a QoS
mechanism 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-
keeper
H.323 application that performs essential control, administrative, and managerial
functions in the 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.