LAN Local Area Network.
MAC Media Access Control, ID of an endpoint.
QoS Quality of Service, used to refer to several mechanisms intended to improve audio
quality over packet-based networks.
RTCP Real-time Transport Control Protocol.
RTP Real-time Transport Protocol.
SRTCP Secure Real-time Transport Control Protocol.
SRTP Secure Real-time Transport Protocol.
System -
specific
Specific to a particular type of call server, for example, Communication Manager.
“System-specific signaling” refers to messages specific to the signaling protocol used
by the system, for example, H.323 and/or CCMS messages used by Communication
Manager and IP Office. “System-specific procedures” refers to telephone software
procedures that are specific to the call server with which the software is intended to be
used.
TCP Transmission Control Protocol, a connection-oriented transport-layer protocol.
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
Registration with Communication Manager by an IP telephone with no extension.
Allows limited outgoing calling.
URI & URL Uniform Resource Identifier and Uniform Resource Locator. Names for the strings used
to reference resources on the Internet (for example, HTTP://....). URI is the newer
term.
USB Universal Serial Bus. An industry standard used by PCs and various devices for
communication.
VLAN Virtual LAN.
VoIP Voice over IP, a class of technology for sending audio data and signaling over LANs.
Terms Used in This Guide
86 H.323 Installation & Maintenance Guide R6.1 May 2011
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