
October 2013 – Ed.1.0
EQUITEL E400 Family – Control and communications protocol
iii
Chapter 3.
Audio communication using RTP and G.711-A ........................................................................... 23
3.1
Encoding ............................................................................................................................................. 23
3.2
Decoding ............................................................................................................................................. 25
Chapter 4.
SIP ............................................................................................................................................... 26
4.1
Basic concepts .................................................................................................................................... 26
4.2
SIP implementation in the modules E401 and E451 .......................................................................... 27
4.2.1.
Basic elements of the SIP network ............................................................................................. 28
4.2.2.
SIP network basic configuration ................................................................................................ 28
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