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Chapter 4 - Setting Up Conferences
4-112
AGC The Auto Gain Control (AGC) mechanism regulates audio
noise and volume by balancing the received signal to all
participants. Different endpoints and phones produce
specific source noises and volume. To provide a constant
output amplitude, AGC can be applied to all incoming
audio streams prior to mixing, thereby dynamically
adjusting the amplification of the input signal.
AGC is automatically enabled for all participants. Clear this
check box to disable this option for the participant.
Enhanced Video This option is applicable to Standard Video cards and is
not required for participants connecting to conferences
which run on Video+ cards (that provide high quality video
combined with high line rates using one video port instead
of two).
The MGC unit can provide high quality video (30 frames
per second for incoming and outgoing video streams) for
line rates up to T1/ E1 in Transcoding and Continuous
Presence conferences. This is done by allocating two
video ports to the participant. One video port is used for
encoding, while the other is used for decoding the
incoming video stream.
Select this option to enable the high quality video feature
for the participant.
Note:
• To work with 30 frames per second, the High Frame
Rate flag in the system.cfg must be enabled.
• To work with bit rates higher than 768 Kbps, the High
Bit Rate flag in the system.cfg must be enabled.
• During an On Going ISDN/ATM/MPI connected
conference this setting can be greyed out.
• This option is disabled for Video Switching
conferences.
Service Name Enter the name of the Network Service to be used to
connect the ISDN/ATM/MPI/T1-CAS participant to the
conference exactly as it is defined in the Network Service
list (the system is case sensitive).
Table 4-16: ISDN/ATM/MPI/T1-CAS Participant - Advanced (Continued)
Field/Option Description