D-Link DVG-3104MS - VoiceCenter PSTN Gateway User Manual page 28

Section 3 - Configuration
Country: Define user location to fit the local Telco system requirements.
Caller ID Display:
Enable / Disable Caller ID.
Outgoing IP Call: Enable/Disable the outgoing call by dialling IP address or URL without SIP server.
Incoming IP Call:
Enable/Disable the incoming call dialled by IP address or URL without SIP server.
RTP Timeout (sec): The time interval in which the Gateway disconnects an active call if no RTP is received.
RTP Port:
Initial port number for sending RTP packets.
RTP ToS:
Type of Service value for Quality of Service.
RTP ToS (lower 5 The lower 5 bits of ToS
bits):
STUN:
To enable / disable the STUN function
Stun Server: Simple Traversal of UDP through NAT. This function is used for NAT traversal.
UPnP:
Universal Plug and Play. This function is used for NAT traversal.
Apply: Click Apply to upload the settings.
D-Link DVG-3104MS User Manual