fmtp Attribute

The fmtp attribute shown in the following tables takes the form:

a=fmtp:<amrParameter> <parameterValues>

amrParameter contains one of the AMR/AMR-WB RTP-specific parameters listed below.

channels
crc
interleaving
max-red
maxtime
mode-change-capability
mode-change-neighbor
mode-change-period
mode-set
octet-align
ptime
robust-sorting

parameterValue: contains the value of the specified parameter.