AMR AMR-WB mode-set Parameter
AMR/AMR-WB codecs support 9 standard encoding modes as shown in the following table.
Frame Content Mode Indicator Frame Content
AMR 4.75 kbit/sec 0 AMR-WB 6.60 kbit/sec
AMR 5.15 kbit/sec 1 AMR-WB 8.85 kbit/sec
AMR 5.90 kbit/sec 2 AMR-WB 12.65 kbit/sec
AMR 6.70 kbit/sec 3 AMR-WB 14.25 kbit/sec
AMR 7.40 kbit/sec 4 AMR-WB 15.85 kbit/sec
AMR 7.95 kbit/sec 5 AMR-WB 18.25 kbit/sec
AMR 10.2 kbit/sec 6 AMR-WB 19.85 kbit/sec
AMR 12.2 kbit/sec 7 AMR-WB 23.05 kbit/sec
NA 8 AMR-WB 23.85 kbit/sec
The optional AMR/AMR-WB mode-set parameter can be used to restrict the session mode set to a sub-set of the 9 standard modes. If a mode-set is specified, it must be honored, and frames encoded with modes not specified within the sub-set must not be sent in any RTP payload or used in codec mode requests. In the absence of a mode-set parameter, the inclusive mode-set (0,1,2,3,4,5,6,7,8) provides the default value.