This object specifies the size of the voice payload sample
to be produced by the coder specified in
cvVoIPPeerCfgCoderRate.
Each coder sample produces 10 bytes of voice payload. The
specified value will be rounded down to the nearest valid
size.
A value of 0, specifies that the coder defined by
cvVoIPPeerCfgCoderRate should produce its default payload
size.