1.  Add ITU O.41 filter type.  This filter is applied to the level meter when the 'Filter.Type' property is set to 10.
2.  Remove level clamping on 'Ring.Level'.  The level clamping prevented high ringing levels if a custom wave shape with low RMS values (or high crest factors) was used.

1.  Increase line voltage range.  0 to 72 volts.
2.  Increase loop current range.  15 to 72 mA.
3.  Increase ringing DC offset voltage range.  0 to 72 volts.
4.  Add 'Ring.Trip' property which can terminate ringing once an off-hook condition is detected (instead of performing a ring mute).
5.  Add 'AcCap.PlayLoopStart' and 'AcCap.PlayLoopEnd' properties.  They allow for only a subset of the capture buffer to be used for playback (instead of the entire buffer).
6.  Modify how the 'System.Reset' property functions in order to force a hard reset of the audio codec.  Previously, the soft resets could cause a codec latch-up.
7.  Add 'AcCap.PlayGain' property to control the output level of waveform playback.
8.  Add 'AcCap.RecLoopEnd' property to limit the buffer space allocated to waveform recording.
9.  Fix bug that prevented the initialization of filter delay nodes upon boot.
10.  Add 'Data.Duplicate' property in order to support limited fractional FSK bits.

1.  Fixed bug that could cause communication errors (lost data) to occur when using the USB connection to a PC.

1.  Modify operation of the soft reset command to ensure it properly resets the audio codec.  Otherwise it is possible the codec does not exit the reset state properly and prevents further audio signal generation.

1.  Improve FSK decoding performance for V.23 signals.  Now able to tolerate a wider range in twist and frequency/baud offset.
2.  Add MeterPulse.Count property which specifies the number of metering pulses to generate.
3.  Improve transfer rate of USB waveform uploads or downloads.
4.  Support 1/2 rate waveform playback.

1.  Add support for FSK signal drop-outs.
2.  Add metering pulse generation properties.
3.  Add Echo.Enable and Echo.RingDisable properties.