VoIP (Voice over Internet Protocol) is voice communication over internet network or other that over internet protocol. Voice signal will be separated and packaged. It will be sent over network that ordinary use to communicate substitute of traditional telephony communication.
Codec
G.711 (64 kbps)
G.726 (32 kbps)
G.729 (8 kbps)
G.723 (5.3 & 6.3 kbps)
GSMFR (13.2 kbps)
Port
TCP 1720
UDP 5060 – 5070
UDP 10000 – 20000
UDP 4569
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