Our NE used wireshark to capture some calls, said “Currently it appears voip calls consume a little more than twice the amount of bandwidth they should, possibly due to payload size (ms or bytes) being set to the minimum setting.”
They want me to show them the settings from our PBX for payload size. (Default is 20ms, options are 10, 20 and 30 ms)
I couldn’t find this info looking at the settings in FreePBX Admin, or searching online, or in the asterisk guide, I do know we use G.711 codec but not sure where to configure the payload size. Is there a .conf file I just need to look in to be able to provide this?
Besides that, any tips on general things to look into to reduce bandwidth utilization (besides changing over to G729)?
Thanks in advance,
Ryan
PBX Firmware: 2.210.62-1
PBX Service Pack: 1.0.0.0
Wireshark numbers:
KB seconds KB/s total kbits kbps total packets PPS
call 1 69 3 23 552 184 276 92 171200
call 2 52 2 26 416 208 202 101
call 3 455 19 24 3640 191.5789474 1877 98.78947368
call 4 968 40 24 7744 193.6 3994 99.85
call 5 234 10 24 1880 188 966 96.6
call 6 432 18 24 3456 192 1780 98.88888889
call 7 220 9 25 1760 195.5555556 907 100.7777778