# GSM - 13 Kbps (full rate), 20ms frame size
# iLBC - 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size
# ITU G.711 - 64 Kbps, sample-based Also known as alaw/ulaw
# ITU G.722 - 48/56/64 Kbps
# ITU G.723.1 - 5.3/6.3 Kbps, 30ms frame size
# ITU G.726 - 16/24/32/40 Kbps
# ITU G.728 - 16 Kbps
# ITU G.729 - 8 Kbps, 10ms frame size
# Speex - 2.15 to 44.2 Kbps
# LPC10 - 2.5 Kbps
which codec is the best to use and gives the best voice quality??
I'm using g729 ( $10/per channel ) now.
I'm trying to figure out how to get the best quality of conversation for my customers. I know it depends on many things - DID quality + asterisk settings and etc.......
Sometimes i notice when i call my asterisk the ivr announcement even breaks up - what could it be the cause of that???
|