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NAT Traversal
STUN is a protocol for assisting devices behind a NAT firewall or router with their packet routing.
STUN enables a device to find out its public IP address and the type of NAT service its sitting behind.
When you enable the STUN function, you must input the STUN server address.
UPnP: Enable/Disable Universal Plug and Play, default setting is Disable.
VoIP Setting
This page defines the Voice, Call service, FXS / FAX, General Dialing, URI Phone Book, Call Screen,
QoS Setting. You need to follow the ISP suggestion to setup these items. When you finished the setting,
please click the Submit button.
Voice Setting
CODEC
A CODEC is an algorithm for taking voice or video and compressing the information. This type of codec
combines analog-to-digital conversion and digital-to-analog conversion functions in a single chip. The
Codec is used to compress the voice signal into data packets. Each Codec has different bandwidth
requirement. There are 9 kinds of codec, G.711/Ulaw, G.711/Alaw, G.729, G.723, G.726 (16K bps),
G.726 (24K bps), G.726 (32K bps), G.726 (40K bps), and iLBC.
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