Polycom ViewStation FX4000 User Manual page 37

© Polycom, Inc. 2002
Software Update appears when you power on the ViewStation
FX or VS4000.
The system software is corrupt or not loaded properly. Load system
software on the ViewStation FX or the VS4000 from your PC. For
instructions on how to do this, refer to
consult your network equipment provider.
A lightning bolt indicator appears on the left side of your far or
near-site screen.
The lightning bolt is only a visual indicator that informs you about
WAN or LAN network problems. It does not indicate performance
problems with your ViewStation FX or VS4000.
If you are in an H.320 call, the lightning bolt most likely indicates
that the telephone company is experiencing bit errors on the line.
Contact and inform your telephone company of the existing
problem.
If you are in an H.323 call, the lightning bolt may signify that your
LAN network is experiencing packet loss, accompanied by video
and audio degradation. Contact your network manager.
The lightning bolt works differently in H.320 and H.323 calls for
software version 2.5 and above:
In H.320 calls, the lightning bolt appears if there are 3 or more
CRC (Cyclic Redundancy Check) errors within a period of one
second, or if there are 10 or more FEC (Forward Error
Correction) errors in a period of one second.
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 ViewStation FX and VS4000
ARENA API Programmer's Guide that is included on the
Documentation CD.
Chapter 1 - Welcome to the ViewStation FX/VS4000
Upgrading Software, or
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