The TBB Portal OPTIONS TAB Call Quality screen enables you to select one of two Codecs which you can use for your TBB service:
High Bandwidth Voice / Best Quality
This connection uses the G.711 codec which consumes about 87.2kbs of bandwidth per direction per call. Use this for most High Speed Connections (DSL or CABLE).
Low Bandwidth Voice / Good Quality
This connection uses the G.729 codec which consumes about 31.2kbs of bandwidth per direction per call. Use this for DSL Lite connections or when you would like to reduce the bandwidth usage.
Click here for a screenshot.