Filter
Top Products
PCS -1/1P
3-207-456-12 (1)
I:\3207456121PCS1WW\08OPE.FM
masterpage:Left
149Notes on Secondary Terminals
Chapter 7: Multipoint Videoconference
Notes on Secondary
Terminals
If there is a terminal that is not adequate for
the settings set by this system, that terminal
is called the secondary terminal.
Communication capabilities between the
secondary terminal and this system are
shown below.
• Sending/receiving audio
• Receiving video from the secondary
terminal
• Disables transmission of video to the
secondary terminal
For details on the secondary terminal, see
Glossary on page 180.
When a normal phone is connected
The audio mode of the other terminals is not
affected if a normal phone is connected or
disconnected any time.
If terminals with the 2B and 1B
connections are mixed among the
connected points when the ISDN line
is set to 2B
The conference is held via a 2B connection
with the terminals with 2B connection. The
1B terminal is regarded as a secondary
terminal. This system sends or receives
audio, but does not send video to the
secondary terminal. When all 2B terminals
end the conference, it will continue via a 1B
connection and transmission/receipt of
audio/video becomes available.
When terminals with different
number of lines are mixed in a
multipoint videoconference
The number of lines for the ISDN interface
can be set up to 6B.
The terminals with a different number of
lines set from that of the local party will be
regarded as secondary, and the transmission
of video is not available.
When a 56K network is mixed among
the terminals if the conference is held
via 64K network
The conference automatically changes to
that via 56 K network. Terminals that cannot
change to that network are regarded as
secondary terminals, and the transmission of
video is not available.
When a terminal with different audio
mode is connected and its video bit
rate is different
The conference is conducted in the video
mode according to the terminal with the
lowest video bit rate. A terminal that cannot
fit this rate is regarded as a secondary
terminal, and the transmission of video is not
available.
When a terminal with lower video
frame rate is connected
The system sends video to all the terminals
according to the lowest video frame rate in
the terminals connected.
When a terminal whose video mode is
QCIF standard only
The system does not send video to the QCIF
terminal.
When “Video Mode” is set to “H.263”
The H.263 mode is available only when the
video mode in all the terminals is H.263
mode. If a terminal with the H.261 mode is
included, the conference is held in the H.261
mode.