Standards
-Complete Speex RTP profile

Features
*Support for intensity stereo
*Support for 32 kHz sampling rate
*Explicit encoding of DTMF/TTY?
*Add maximum bit-rate control for VBR
*Add "VAD-only" VBR (constant bit-rate or comfort noise)

Codec
-Better VBR logic for choosing mode
-Wideband VBR
-Improve VAD
-Improve narrowband vocoder
