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Chapter 5 Data Testing
OneExpert DSL User's Guide
22052280, Rev. 015 April 2019 124
Press the right arrow next to STUN to specify STUN settings.
STUN (Simple Transversal of UDP [User Datagram Protocol] Through NATs [Network
Address Translators]) allows VoIP calls across a NAT router. These settings should only be
changed if necessary.
• STUN Enabled – T o enable, check the STUN Enabled box.
• Server Address Type – Select the type of server address: IP Address or DNS
Name.
• Server Address – Enter the server IP address or DNS Name.
• Server Port – Enter the port number of the stun server.
• Client Port – Enter the client port number.
• NAT Refresh – Specify the NAT refresh rate. This is the number of seconds
between messages to the STUN server to keep the NAT mapping alive.
Press the right arrow next to Quality of Service , and then specify the QoS settings.
The quality of service (QoS) measurement uses two thresholds—good and poor—to
produce three quality ratings: good, poor, and fair.
The following section describes the settings. Press each entry on the screen of your device
or select a keypad button to populate it with alphanumeric values.
• Loss Good Threshold – Enter the Pass threshold, in milliseconds.
• Loss Poor Threshold – Enter the Fail threshold, in milliseconds.
• Jitter Good Threshold – Enter the Pass threshold, in milliseconds.
• Jitter Poor Threshold – Enter the Fail threshold, in milliseconds.
• Delay Good Threshold – Enter the Pass threshold, in milliseconds.
• Delay Poor Threshold – Enter the Fail threshold, in milliseconds.
• MOS Scale – Select the scaling method. This selection affects the scaling
of the CQ-MOS and LQ-MOS results (on the “Call Scores” result screen). This
selection is only available if your unit is equipped with the MOS option.
• SIP IP ToS – Session Initiation Protocol (SIP) Type of Service (ToS). Select the
SIP type of service for VoIP signaling.
NOTE:
If STUN is enabled, the VoIP network will not come up until the
STUN client on the OneExpert DSL has determined the type of
NAT used between the OneExpert DSL and the STUN server.