Save Bandwidth / Enable voice packet compression For GSM Gateway
please gudie me how can we enable voice packet compression in Asterisk/Voipswitch with G729/G723 codecs baiscally i want to compress voice packets in to 8/10kbps how can i do this please guide me awaiting thanks.
A call in G.729 over ethernet uses 31.2 Kbps per direction:
A -----------> B 31.2 Kbps
A <----------- B 31.2 Kbps
So, how many concurrent calls do you need?
32 * 31.2 kb/s = about 1 Mbit/s upload and download.
You can reduce bandwidth consumption enabling voice activity detection (VAD or silence suppression). In this case no packets are sent during silence. This technic could decrease the quality of a call introducing a little "silence hole" at the begining of the speak.
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