This attribute counts the total number of cells containing audio data
received from the interface while the channel was seized. A CCS
channel is always considered to be seized. Audio data includes cells
containing voice as well modem audio, but not silence.
A cell contains 44 bytes of data from the DS0 channel(5.5 ms).
This flow is measured before compression is performed on the
channel.
This counter wraps to zero after reaching its maximum value.