Panasonic kx-ns500 Pc Programming Manual page 219

Echo Cancellation
The settings in this tab are for non-IP calls.
Echo Cancellation Ability
Specifies the echo canceller ability time.
Value Range
OFF, 64 ms, 128 ms
DSP Digital Gain (Down)
Specifies the DSP Digital Gain for the down voice path.
Value Range
-14–6 dB
DSP Digital Gain (Up)
Specifies the DSP Digital Gain for the up voice path.
Value Range
-14–6 dB
EC Gain
Specifies the Echo Canceller Gain.
Value Range
-14–6 dB
NLP Setting
Specifies the NLP (Non-Linear Processor) setting to control echo sound quality.
Value Range
Disable, Weak, Normal, Strong
DSP Conference
DSP Conference Priority
Specifies the Conference Priority (the conference resource you want to use).
Value Range
Preferential: Conference resource on DSP card
Alternative: Default conference resource
DSP Digital Gain (Up) on V-IPEXT side for conference
Specifies the DSP Digital Gain for the up voice path for conference calls using an extension of a V-IPEXT card.
9.2.2 PBX Configuration—[1-1] Configuration—Slot—System Property—Site
PC Programming Manual 219