RADVision MCU-323, User Manual

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Glossary
6
RAS
Registration Admission Status protocol. The communication protocol used to convey
registration, admission and status messages between H.323 endpoints and the Gatekeeper.
Restricted Bandwidth
Bandwidth rates that use seven bit encoding as opposed to eight bit encoding. Restricted
rates are multiples of 56 Kbps, compared to standard rates that are multiples of 64 Kbps.
RJ-45
Registered Jack-45. Standard 8-wire connectors for IEE 802.3 10BASE-T networks.
Room system
H.320 based legacy videoconferencing stations. They are called room systems because they
are usually large monitors with a wide-angle camera and served groups of people who meet
in a room and conference with other similar groups at remote locations.
Silence Suppression
Silence information within the audio stream can consume LAN bandwidth and burden MCU
voice processing. Using compression techniques, Silence Suppression can greatly reduce the
wasted bandwidth in a a multipoint conference and on congested networks.
Socket
Unique transport address for an application or device formed by the IP address and port
number.
Subnet
A portion of an IP network defined by a subnet mask. Devices on the same subnet have the
same subnet mask.
T.120
Data sharing protocol for multipoint data communication in a multimedia conferencing
environment. T.120 enables white board collaborations, file transfers, graphic presentations
and application sharing between participants in a conference.
TCS4
A Direct Inward Dialing routing method for H.320 calls supported by the Gateway.
Unicast
In packet-switched networks, the data is sent to one user.
UTP
Untwisted Shielded Pair.