RADVision Scopia XT1000 User Manual - page 55
RADVISION | User Guide
System Configuration Settings
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Dynamic Ports
In this menu you can set the range of Dynamic Ports for TCP and UDP, or leave in Auto
detect mode.
Note:
When a firewall is crossed, the firewall administrator must open a range of
dynamic TCP and UDP ports, as configured in the system, to allow bidirectional
IP traffic. Moreover, once the ports have been opened, the protocols (TCP 1720
(Q.931), TCP 1503 (T.120), UDP 1719, and 1718 (RAS)) involved in a call must be
taken into account.
NAT
In this menu you can:
Enable/Disable NAT traversal
Set NAT discovery mode
Manual - user can set NAT IP public address
HTTP autodiscovery - NAT discovery by means of HTTP server
STUN autodiscovery - NAT discovery by means of STUN server
Refresh time - opening time of pinhole inside NAT, also used as TTL by H.460
QoS
In this menu you can Enable/Disable QoS, that is a means to offer the ability to provide
different priority to different data flows, or to guarantee a certain level of performance to
a data flow; in particular is possible to choose between Precedence/TOS and Differentiated
Service.
Precedence/TOS - For each flow (Audio, Video, Data, Signal) it is possible to define
the Type Of Services and a Precedence to fit at best network capabilities.
Differentiated Service - For each flow (Audio, Video, Data, Signal) it is possible to
define a value to fit at best network capabilities.
Note:
Please contact your network administrator for correctly setting these
parameters.