155Appendix
Appendix
Global Management System User’s Guide
ViewStation Admin Setup Menu
System Info :: Admin Setup :: LAN / H.323 :: H.323
QoS
ViewStation Field Type Meaning
Used Fixed Ports Checkbox
option
Checked - Species the xed ports assigned to
ViewStation when working with a rewall
TCP Ports User Dened
Value
TDP Ports open in rewall for IP communication
UDP Ports User Dened
Value
UDP Ports open in rewall for IP communication
Type of Service Field Radio Buttons Species whether to use IP Prec or DiffServ
parameters for the Type of Service
Type of Service Value
(IP Precedence)
User Dened
Value
Species the priority given IP packages sent to the
ViewStation.
Type of Service Value
(DiffServ)
User Dened
Value
Species IP packet service requirements
System is behind a
NAT
User Dened
Value
Alerts ViewStation to use the IP address that
appears in the NAT outside (WAN) address eld 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.
Auto discover NAT
address
Checkbox
option
Checked - Option for the ViewStation to discover its
NAT outside (WAN) address automatically