Polycom ViewStation SP128 User Manual page 81

Chapter 2
© Polycom, Inc.
Figure 2-40. ViewStation SP384 Audio Screen
VCR Installed:
• Checked: Enables audio input through the VCR connection
of the ViewStation SP.
• Not checked: Disables audio input through the VCR
connection of the ViewStation SP.
Mute Auto Answer Calls:
• Checked: The ViewStation SP mutes near site audio when
an incoming call is automatically answered by the
ViewStation.
• Not checked: The ViewStation SP sends near site audio to
the far site when a call is automatically answered.
Sound Effects Volume: Highlight the Sound Effects Volume
field and press the VOLUME UP and DOWN keys on the remote
control to select the audio levels of the ViewStation SP. The
sound effects volume level may be adjusted from 1 to 10. At each
increment, a tone notifies the user of the volume level.
Audio Quality: The Audio Quality Preference screen (System
Info > Admin Setup > Video Network > IMUX > Audio Quality)
shown in Figure 2-41 allows the selection of an audio protocol.
G.722 audio delivers a higher quality of audio than G.728 and
uses 48 Kbps of the call bandwidth. G.728 delivers telephone
quality audio and only uses 16 Kbps of the video bandwidth.
G.728 is generally used for lower data rates.
63
Optional Configurations
ViewStation SP User Guide