G.722 is a high bit rate (48/56/64Kbps) ITU standard codec.

Technical description

ITU G series reccomendations

There was long thread on the one of the Asterisk Mailing Lists recently about the G.722 codec..
Some of the more interesting messages:

• Andrew Lindh - Comparison of different versions of G.722.
• Andrew Lindh - pointer to source code for a G.722 implementation

Additional reading

• Why g722 is not ideal by GIPS, why it is still a good choice by Michael Graves

See Also

• Codecs