Avaya one-X 1603SW Administrator's Manual page 116

Glossary of Terms
Media Encryption of the audio information exchanged between the IP telephone and the call
Channel server or far end telephone.
Encryption
NAPT Network Address Port Translation.
NAT Network Address Translation.
OPS Off-PBX Station.
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 several 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.
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 alternative to H.323 for VoIP signaling. This protocol is
not applicable to 1600 Series IP Telephones.
SNTP Simple Network Time Protocol. An adaptation of the Network Time Protocol used to
synchronize computer clocks in the internet.
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 certain IP telephones.
TLS Transport Layer Security, an enhancement of Secure Sockets Layer (SSL). TLS is
compatible with SSL 3.0 and allows for privacy and data integrity between two
communicating applications.
UDP User Datagram Protocol, a connectionless transport-layer protocol.
Unnamed Registration with Avaya Aura Communication Manager by an IP telephone with no
Registration extension. Allows limited outgoing calling.
VLAN Virtual LAN.
VoIP Voice over IP, a class of technology for sending audio data and signaling over LANs.
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