Applicable Products: Nyquist E7000 and C4000
Applicable Releases: 7.0.0.550 and 4.0.0.310
Fixed in Releases : 8.0.0, 5.0.0 and higher
Firmware File Name : NyqUpdate-2.0.611.tar.gz
How to apply firmware patch: Use "Firmware" view of the Nyquist web interface.

This patch provides the following enhancements using the Nyquist appliance firmware (NyqUpdate-2.0.611.tar.gz):

- Enhances talkback performance and quality on the NQ-S1810CT-G2 and NQ-S1810WT-G2 VoIP speakers by reducing the noise floor through additional DSP filtering and providing end-users with additional device controls to allow fine tuning of each speaker for its specific installation environment.  The device’s Web UI intercom tuning control has been modified to add Talkback Threshold and Talkback Decay controls to the existing Switching Sensitivity.
- Switching Sensitivity: This setting affects the level at which the half-duplex output channel is switched on and the microphone is muted. The lower the Sensitivity the softer the talkback sound has to be for the talkback circuit to switch.
- Talkback Threshold: This setting sets the sensitivity of the talkback noise gate. The lower the level the more sensitive the talkback microphone is to turning on.
- Talkback Decay: This setting sets the switching time of the noise gate. The lower the number the longer the noise gate stays open.  If talkback audio sounds choppy set the decay to a lower value.