Extron Electronics SME 100 User Guide - Manual (Page 14)

Hypertext Transfer Protocol over Secure Sockets Layer (HTTPS) — A networking
protocol that allows web servers to transfer and display web content to users
securely.
All transferred data is encrypted so that only the recipient is able to access and read the
content.
Internet Group Management Protocol (IGMP) — A TCP/IP communications protocol
used by hosts and adjacent routers on a network to establish multicast group memberships.
Internet Protocol (IP) — The primary protocol that establishes the Internet. It defines
addressing methods and structures for datagram encapsulation, allowing delivery of packets
from a source to a destination across an internetwork based purely on addressing.
Intraframe (I-frame) — Intraframes (I-frames) are primary frames that contain the full
temporal resolution and data of a video frame.
IP address — A numerical label using the Internet Protocol assigned to devices in a
network. The IP address for the source and destination are included in an IP datagram.
Java™ — A programming language originally developed at Sun Microsystems
® , Inc. (which
is now merged with Oracle ® Corporation).
JavaScript ® — A scripting programming language designed to add interactive features to
web pages.
Maximum Transmission Unit (MTU) — The maximum packet size allowed in a network
data packet.
Media Access Control (MAC) — A sub-layer protocol that provides addressing and
channel access control mechanisms. This prottocol allows for several terminals or network
nodes to communicate within a multi-point network, typically a local area network (LAN).
MPEG-2 — The video compression algorithm used for DVD-Video, Digital Broadcast
Satellite (DBS), and Digital TV (including HDTV) delivery systems.
MPEG-4 — A patented collection of methods defining compression of audio and visual
(AV) digital data. Uses of MPEG-4 include compression of AV data for streaming media
on the web and CD distribution, voice (telephone, videophone), and broadcast television
applications.
Multicast — A network technology for the delivery of information to a group of destinations
simultaneously using the most efficient strategy to deliver the messages over each link of
the network only once, and creating copies only when the links to the group of destinations
split. Basically, a single stream is sent from the source to a group of recipients.
Network Time Protocol (NTP) — A protocol that is used for synchronizing the clocks of
computer systems over networks.
Predictive frame (P-frame) — Predictive frames (P-frames) follow I-frames and contain
data that has changed from the preceding I-frame.
Pull streaming — Streaming method that allows users to search for content, encoded with
one of the transport protocols, and initiate a download or view the stream.
Push streaming — Streaming method where the encoder sends content out to one
(unicast) or more (multicast) decoders using one of the transport protocols.
Quality of Service (QoS) — Performance, such as transmission rates and error rates, of a
communications channel or system; suite of features that configure queuing and scheduling
on the forwarding path of an E-Series router. QoS provides a level of predictability and
control beyond the best-effort delivery that the router provides by default (best-effort service
provides packet transmission with no assurance of reliability, delay, jitter, or throughput).
QuickTime
® — QuickTime is a proprietary multimedia framework developed by Apple ® Inc.
The QuickTime media player can decode and present H.264 encoded audio and video files
or live streams (
www.apple.com/quicktime ).
Real-time Streaming Protocol (RTSP) — A network control protocol designed for use in
audio visual and communications systems to control streaming media.
SME 100 • Introduction 8