USC support twofixed-point G729 codecs: USC_G729A_Fxns (G729A =reduced-complexity G729 fixedrate 8000) and USC_G729I_Fxns (G729/D/E with 8000, 6400 and 11800 multi-rate mode). Both codecs optionally supports Annex B (VAD/DTX).
This is in accordance withUSC G729 readme file (.\speech-codecs\codec\speech\g729i\readme.htm):
Standard: ITU-T G.729 Annexes A, B
Standard: ITU-T G.729, Annexes B, C, C+, D, E, I
You may also want to look at our umc_speech_rtp_codec sampledemonstrating how to use USCforRTP encode/decode.
IPP Speech Codecs