Polycom GlobalManagementSystem User Manual page 160

Appendix
ViewStation Admin Setup Menu
System Info :: Admin Setup :: LAN / H.323 ::
QoS
ViewStation Field
Used Fixed Ports
TCP Ports
UDP Ports
Type of Service Field
Type of Service Value
(IP Precedence)
Type of Service Value
(DiffServ)
System is behind a
NAT
Auto discover NAT
address
Global Management System User's Guide
Type Meaning
Checkbox Checked - Specifies the fixed ports assigned to
option ViewStation when working with a firewall
User Defined TDP Ports open in firewall for IP communication
Value
User Defined UDP Ports open in firewall for IP communication
Value
Radio Buttons Specifies whether to use IP Prec or DiffServ
parameters for the Type of Service
User Defined Specifies the priority given IP packages sent to the
Value ViewStation.
User Defined Specifies IP packet service requirements
Value
User Defined Alerts ViewStation to use the IP address that
Value appears in the NAT outside (WAN) address field as
its external IP address. When using a Virtual Private
Network (VPN) for network connection, make sure
that System is behind a NAT is NOT selected.
Checkbox Checked - Option for the ViewStation to discover its
option NAT outside (WAN) address automatically
H.323
Appendix 155