Avaya scopia elite 6000 series Installation Manual page 81

Gateway
GLAN
H.225
H.235
H.239
H.243
H.245
H.261
H.263
H.264
H.264 Baseline
Profile
H.264 High Profile
February 2016
A gateway is a component in a video solution which routes information
between two subnets or acts as a translator between different protocols.
For example, a gateway can route data between the headquarters and a
partner site, or between two protocols like the TIP Gateway, or the Scopia
100 Gateway.
GLAN, or gigabit LAN, is the name of the network port on the XT Series. It
is used on the XT Series to identify a 10/100/1000MBit ethernet port.
H.225 is part of the set of H.323 protocols. It defines the messages and
procedures used by gatekeepers to set up calls.
H.235 is the protocol used to authenticate trusted H.323 endpoints and
encrypt the media stream during meetings.
H.239 is a widespread protocol used with H.323 endpoints, to define the
additional media channel for data sharing (like presentations) alongside the
videoconference, and ensures only one presenter at a time.
H.243 is the protocol used with H.323 endpoints enabling them to remotely
manage a videoconference.
H.245 is the protocol used to negotiate call parameters between endpoints,
and can control a remote endpoint from your local endpoint. It is part of the
H.323 set of protocols.
H.261 is an older protocol used to compress CIF and QCIF video
resolutions. This protocol is not supported by the XT Series.
H.263 is an older a protocol used to compress video. It is an enhancement
to the H.261 protocol.
H.264 is a widespread protocol used with SIP and H.323 endpoints, which
defines video compression. Compression algorithms include 4x4 transforms
and a basic motion comparison algorithm called P-slices. There are several
profiles within H.264. The default profile is the H.264 Baseline Profile, but
H.264 High Profile uses more sophisticated compression techniques.
See H.264 on page 81.
H.264 High Profile is a standard for compressing video by up to 25% over
the H.264 Baseline Profile, enabling high definition calls to be held over
lower call speeds. It requires both sides of the transmission (sending and
receiving endpoints) to support this protocol. H.264 High Profile uses
compression algorithms like:
• CABAC compression (Context-Based Adaptive Binary Arithmetic
Coding)
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Avaya Scopia Elite 6000 Series MCU Installation Guide
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Gateway
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