Good day all
We have 2 asterisk servers connected to each other via IAX2 using ilbc.
Each call we make goes up to 25kbit and each one there after 25kbit as
well

bit rate is 13333bps, giving 1667 bytes/sec packetization is 20ms, giving 34 bytes per packet IAX header is 4 bytes UDP header is 8 bytes IP header is 20 bytes this means one packet is 34+4+8+20=66 bytes 50 packets per second gives 3300 bytes/per second, meaning 26400bps

Is there a way to bring it down?

yes hack asterisk to use a lower packetization value

roy

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