h263_amr_wb_128_96_v64_12_a16.sdp
h263_amr_wb_128_96_v150_20_a20.sdp
h263_amr_wb_vbr_128_96_v36_10_a14.sdp
h263_amr_wb_vbr_128_96_v102_15_a18.sdp
h263_amr_wb_vbr_128_96_v176_25_a24.sdp