Avaya Scopia XT7100 Deployment Manual page 209

Packet Loss
PaP Video Layout
Phantom Power
PiP Video Layout
Point-to-Point
PoP Video Layout
Prefix
PTZ Camera
Q.931
April 2015
NetSense's sophisticated algorithm dynamically scans the video stream,
and then reduces or improves the video resolution to maximize quality with
the available bandwidth.
Packet loss occurs when some of the data transmitted from one endpoint is
not received by the other endpoint. This can be caused by narrow
bandwidth connections or unreliable signal reception on wireless networks.
The PaP (Picture and Picture) view shows up to three images of the same
size.
Microphones which use phantom power draw their electrical power from the
same cable as the audio signal. For example, if your microphone is
powered by a single cable, it serves both to power the microphone and
transmit the audio data. Microphones which have two cables, one for sound
and a separate power cable, do not use phantom power.
The PiP (Picture In Picture) view shows a video image in the main screen,
with an additional smaller image overlapping in the corner. Typically, a
remote presentation is displayed in the main part of the screen, and the
remote video is in the small image. If the remote endpoint does not show
any content, the display shows the remote video in the main part of the
screen, and the local presentation in the small image.
Point-to-point is a feature where only two endpoints communicate with each
other without using MCU resources.
The PoP (Picture out Picture) view shows up to three images of different
size, presented side by side, where the image on the left is larger than the
two smaller images on the right.
See Dial Prefix on page 203.
A PTZ camera can pan to swivel horizontally, tilt to move vertically, and
optically zoom to devote all the camera's pixels to one area of the image.
For example, the XT Standard Camera is a PTZ camera with its own power
supply and remote control, and uses powerful lenses to achieve superb
visual quality. In contrast, fixed cameras like webcams only offer digital
PTZ, where the zoom crops the camera image, displaying only a portion of
the original, resulting in fewer pixels of the zoomed image, which effectively
lowers the resolution. Fixed cameras also offer digital pan and tilt only after
zooming, where you can pan up to the width or length of the original
camera image.
Q.931 is a telephony protocol used to start and end the connection in H.323
calls.
Comments? infodev@avaya.com
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Avaya Scopia XT Series Deployment Guide
Packet Loss
209