Avaya 4600 Series Administrator's Manual page 15

OPS Off-PBX Station.
PAE Port Access Entity. The protocol entity associated with a port. The PAE supports the
protocol functionality associated with the authenticator, supplicant, or both.
PHP Hypertext Preprocessor, software used to assist in the format and display of Web
pages.
PoE Power over Ethernet.
PSTN Public Switched Telephone Network, the network used for traditional telephony.
QoS Quality of Service, used to refer to several mechanisms intended to improve audio
quality over packet-based networks.
Registration A SIP server that accepts REGISTER requests. The Registration Server places the
Server information received in the requests into the location service for the domain the
server handles.
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.
SDP Session Description Protocol. A well-defined format for conveying sufficient
information to discover and participate in a multimedia session.
Signaling Encryption of the signaling protocol exchanged between the IP telephone and the call
Channel server. Signaling channel encryption provides additional security to the security
Encryption provided by media channel encryption.
SIP Session Initiation Protocol. An IETF standard protocol for IP communication. SIP
enables IP telephony gateways, client endpoints, PBXs, and other communication
systems or devices to communicate with each other. SIP mainly addresses the call
setup and tear down mechanisms of sessions and is independent of the transmission
of media streams between the caller and the called party. SIP is an alternative to
H.323 for VoIP signaling.
SMTP Simple Mail Transfer Protocol. An IETF standard protocol (RFC 2821) for e-mail. Part
of the TCP/IP protocol suite. SMTP sets the message format and message transfer
agent that stores and forwards the email.
SNMP Simple Network Management Protocol. The Internet standard protocol, defined in
STD 15, RFC 1157, developed to manage nodes on an IP network.
SNTP Simple Network Time Protocol. An adaptation of the Network Time Protocol used to
synchronize computer clocks in the internet.
Supplicant An entity at one end of a point-to-point LAN segment that is being authenticated by
an authenticator at the other end.
TCP/IP Transmission Control Protocol/Internet Protocol, a network-layer protocol used on
LANs and internets.
Document Organization
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