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Glossary
Appendix
MLP
Data communication is also available during
communication of video/audio signals between the
videoconferencing systems. The MLP or HMLP is a
protocol for data communication such as NetMeeting.
Using the HMLP protocol allows faster data transmission.
MPEG4
A video coding algorithm recommended by the ISO/IEC
based on the H.263+ standard. Adding some tools provides
some improvement of picture quality compared with the
H.263+ standard. The MPEG4 format is commonly used
for personal computers, cellular phones, etc.
P in P
An abbreviation for “Picture in Picture.” This is a function
which allows you to monitor your own party on a small
window on your TV monitor.
QCIF
An abbreviation for Quater CIF. The number of pixels is a
quarter than one of CIF format.
176 pixels × 144 lines
SNMP
An abbreviation for Simple Network Management
Protocol. This protocol is for management information
between the management station and the managed
terminals. This enables the monitoring of Sony Video
Communication Systems.
SPID
An abbreviation for Service Profile ID.
TOS
Inputting the information data in the TOS field of the IP
address allows the communication system to judge the
packet transmission priority, etc. It also enables change of
path according to the types of service (Delay or Size).