Audio; Video - Polycom ViewStation FX User Manual

Chapter 1

Audio

Video

© Polycom, Inc.
• In H.323 calls, the lightning bolt appears if more than 100 audio
and video packets are lost. The display counter is reset each
time the lightning bolt appears.
The lightning bolt is triggered when your system detects a certain
level of packet loss on the network. The frequency of the packet loss
rate can be adjusted using the remote control shell (either via
RS-232 or via Ethernet/Telnet). Refer to the FX and VS4000 Remote
Control API document that is included on the Documentation CD.
No audio in a call.
• The ViewStation FX or VS4000 is connected to the wrong audio
input on the monitor. Make sure the monitor cables are
connected as shown in the ViewStation FX or VS4000 color
cable diagrams.
• Far site is muted. If the far site is muted, a far site Mute icon
appears in the lower left corner of the monitor. Ask the far site to
press the MUTE button to check if they are muted or are not
connected properly.
• Use the Generate Tone test on the VS4000 to help diagnose the
problem.
You hear echo when speaking.
Echoes are always caused by the far site in a call. Have the far site
turn down the volume and make sure that their microphones are
placed away from the ViewStation FX or the VS4000 and monitor
speakers.
Not enough volume in a call.
The volume is set too low on either the ViewStation FX, the VS4000
or the television monitor. For best results, set the volume on the
television monitor to one-half its maximum volume and set the
volume on the ViewStation FX or the VS4000 to a comfortable level.
No picture on the main monitor.
The system enters sleep mode after 3 minutes of inactivity. In sleep
mode, the system appears to be powered off. To "wake up" the
45 ViewStation FX/VS 4000 User's Guide
Getting Started