Administrator’s Guide for SIP-T2 /T3 /T4 /T5 /CP920 IP Phones
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Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T42U, T42S, T41S, T29G,
T27G, CP920
Smart Noise Block
You can use the Smart Noise Block feature to block out the local noises when there is no speech in a call.
It is only applicable to CP920 phones.
Topic
Smart Noise Block Configuration
Smart Noise Block Configuration
The following table lists the parameter you can use to configure smart noise block.
Parameter
voice.ans_nb.enable
<y0000000000xx>.cfg
Description
It enables or disables the Smart Noise Block feature.
Note
: It works only if “voice.tns.enable” is set to 1 (Enabled).
Permitted
Values
0
-Disabled
1
-Enabled
Default
0
Supported
Devices
CP920
Web UI
Settings > Voice > Noise Proof > Smart Noise Block
Acoustic Shield
The acoustic shield feature is designed for background noise suppression when you are using the phone handset
or a connected headset.
It is particularly used in the open office environment, such as the call center, where background noise can impact
far-end audio quality.
It is only applicable to T57W/T54W/T53W/T53/T48U/T46U/T43U/T42U phones.
Topic
Acoustic Shield Configuration
The following table lists the parameter you can use to configure the acoustic shield.
Parameter
features.acoustic_shield.mode
<y0000000000xx>.cfg
Description
It enables or disables the acoustic shield feature during the call.
Permitted
Values
0
-Disabled
1
-Enabled, you need to manually enable acoustic shield by pressing the
Acous.S On
soft key during
the call.
2
-Auto, the acoustic shield is automatically enabled when the call is set up. You can press the
Acous.S Off
soft key during the call to disable it.
Default
0
Supported
Devices
T57W, T54W, T53W, T53, T48U, T46U, T43U, T42U