Avaya Scopia Elite 6000 Administrator's Manual page 106

Glossary
SNMP
Software endpoint
SQCIF
SRTP
SSO
Standard Definition
Streaming
STUN
SVC
SVGA
Switched video
December 2017
Simple Network Management Protocol (SNMP) is a protocol used to
monitor network devices by sending messages and alerts to their
registered SNMP server.
A software endpoint turns a computer or portable device into a
videoconferencing endpoint via a software application only. It uses the
system's camera and microphone to send image and sound to the other
participants, and displays their images on the screen.
SQCIF defines a video resolution of 128 x 96 pixels.
Secure Real-time Transport Protocol (SRTP) adds security to the
standard RTP protocol, which is used to send media (video and audio)
between devices in SIP calls. It offers security with encryption,
authentication and message integrity. The encryption uses a symmetric
key generated at the start of the call, and being symmetric, the same key
locks and unlocks the data. So to secure transmission of the symmetric
key, it is sent safely during call setup using TLS.
See Single Sign On on page 105.
See SD on page 105.
Streaming is a method to send live or recorded videoconferences in one
direction to viewers. Recipients can only view the content; they cannot
participate with a microphone or camera to communicate back to the
meeting. There are two types of streaming supported in Equinox Solution:
unicast which sends a separate stream to each viewer, and multicast
which sends one stream to a range of viewers.
A STUN server enables you to directly dial an endpoint behind a NAT or
firewall by giving that computer's public internet address.
SVC extends the H.264 codec standard to dramatically increase error
resiliency and video quality without the need for higher bandwidth. It is
especially effective over networks with high packet loss (like wireless
networks) which deliver low quality video. It splits the video stream into
layers, comprising a small base layer and then additional layers on top
which enhance resolution, frame rate and quality. Each additional layer is
only transmitted when bandwidth permits. This allows for a steady video
transmission when available bandwidth varies, providing better quality
when the bandwidth is high, and adequate quality when available
bandwidth is poor.
SVGA defines a video resolution of 800 x 600 pixels.
Switching is the process of redirecting video as-is without transcoding, so
you see only one endpoint's image at a time, usually the active speaker,
without any video layouts or continuous presence (CP). Using video
Administrator Guide for Avaya Scopia
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Elite 6000 MCU 106