At the heart of the NAT mapping is the modification of the destination address of the datagram header. ( )

Forward Error Correction FEC enables super error correction when more than 0.1% of the media stream drops within 10S are detected after the two parties have established a call. The super error correction function will divide the call bandwidth into a part and use it to transmit redundant code streams that are anti-packet loss.

In Wireshark, the user can click a button to use a large number of bits in OSI model 2 through 7 Layers of agreements are filtered.

GK supports the resolution of the called number to the neighbor GK when the called node belongs to the neighbor GK area based on the called number.

H.460 Signaling Interoperability Scheme ( ).