Avaya Scopia XT Series User Manual page 79

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.
SSO
See Single Sign On
Standard Definition
See SD on page 77.
STUN
A STUN server enables you to directly dial an endpoint behind a NAT or firewall by giving that
computer's public internet address.
SVC
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
SVGA defines a video resolution of 800 x 600 pixels.
SQCIF
SQCIF defines a video resolution of 128 x 96 pixels.
Switched video
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 switching increases the port capacity of the Scopia
User Guide for Avaya Video Collaboration Solution for IP Office
Version 8.3
on page 78.
®
Elite MCU only by four times.
Glossary of Terms for Scopia
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