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Administrator’s Guide for the V500 System
3 - 10 www.polycom.com/videodocumentation
Specifying Quality of Service
Set the Quality of Service options for the way your network handles IP packets
during video calls.
To specify Quality of Service:
1. Go to System > Admin Settings > Network > IP > Quality of Service.
2. Configure these settings:
If the system is connected to the Internet via DSL or a cable modem, it is useful to set
maximums for transmitting and receiving bandwidth. DSL and cable modems typically allow
for faster download (receive) speeds compared to upload (transmit) speeds, and so these
settings provide an opportunity to regulate differences.
Setting Description
Type of Service Specifies your service type and lets you choose how to set the
priority of IP packets sent to the system for video, audio, and
far-end camera control:
• IP Precedence — Represents the priority of IP packets sent to
the system. The value can be between 0 and 5. If this option is
selected, enter the value in the Type of Service Value field.
• DiffServ — Represents a priority level between 0 and 63. If this
option is selected, enter the value in the Type of Service Value
field.
Type of Service
Value
Specifies the IP Precedence or Diffserv value for Video, Audio,
and Far-End Camera Control.
Enable PVEC Allows the system to use PVEC (Polycom Video Error
Concealment) if packet loss occurs.
Dynamic
Bandwidth
Specifies whether to let the system automatically find the optimum
line speed for a call.
Maximum Transmit
Bandwidth
Specifies the maximum transmit line speed between 48 Kbps and
512 Kbps.
Maximum Receive
Bandwidth
Specifies the maximum receive line speed between 48 Kbps and
512 Kbps.