This field is deprecated. Specifies the number of frames to transmit per packet.
For G.711 encoding mode, valid values range from 5 to
40 frames, in increments of 5 frames. The default value
for G.711 is 10 frames per packet. For G.723 encoding
mode, valid values are 1 or 2, with a default value of
1 frame per packet.
A value of 0 specifies the number of frames per packet
equal to the default value for the encoding mode
(e.g. 10 frames per packet for G.711).