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Glossary
BONDING*
BONDING is one of the Inverse
Multiplexing methods allowing connection
of the videoconferencing system using
multiple ISDN lines. Dialing the first ISDN
line only enables you to connect all other
lines. Dialing the second and later lines is
automatically done by the communication
between the videoconferencing systems on
both sites. To use BONDING, it is required
that both videoconferencing systems are
equipped with the BONDING function and
that “Area Code” and “Local Number” in the
ISDN Setup menu on the answering site are
set correctly. As the communication
between the systems when using the
BONDING function is made via the ISDN
numbers on the answering site, setting of
“Area Code” and “Local Number” in the
ISDN Setup menu is not essential on the
dialing site.
* BONDING (Bandwidth on Demand
Interoperability Group) is a registered
trademark of THE BONDING
CONSORTIUM.
BRI
An abbreviation for Basic Rate Interface.
Basic interface standardized by the ITU-T.
Single ISDN has two B channels and one D
channel.
CIF
An abbreviation for Common Intermediate
Format. This format allows communication
between different color systems (NTSC and
PAL).
352 pixels × 288 lines
Codec
An abbreviation for Coder-Decoder. An
integrated device of a coder that converts an
analog audio/video signal to a digital data
stream and compresses it, and a decoder for
expanding to restore the original analog
signal.
DHCP
An abbreviation for Dynamic Host
Configuration Protocol. Manages IP
addresses in the network.
DNS
An abbreviation for Domain Name System.
Defines the domain name system.
Echo Canceler
Device to eliminate echo that occurs when
transmitting audio.
Frame rate
The number of frames which can be
encoded/decoded in one second.
G.711
Audio encoding/decoding format
recommended by the ITU-T. A phone
bandwidth audio signal is converted to a
digital signal with a data rate of 64 Kbps. It
can be transmitted with a data rate of 56
Kbps.
G.722
Audio encoding/decoding format
recommended by the ITU-T. A 7-kHz
bandwidth audio signal is converted to a
digital signal with a data rate of 48 Kbps, 56
Kbps or 64 Kbps.
G.722.1
Audio encoding/decoding format
recommended by the ITU-T. A 7-kHz
bandwidth audio signal is converted to a
digital signal with a data rate of 24Kbps or
32 Kbps.
G.729
Audio encoding/decoding format
recommended by the ITU-T. A phone
bandwidth audio signal is converted to a
digital signal with the data rate of 8 Kbps.
G.723.1
Audio encoding/decoding format
recommended by the ITU-T. A phone
bandwidth audio signal is converted to a
digital signal with a data rate of 5.3 Kbps or
6.3 Kbps.