Smart Noise Filtering; Smart Noise Filtering Configuration; Dtmf; Dtmf Keypad - Yealink SIP-T3 Administrator's Manual

Smart Noise Filtering

The phones can block out the slight noise from the far party when there is no speech in a call, and at the same time
filter out the common transient noise (door closing, table knocking, and so on).
Topic

Smart Noise Filtering Configuration

Smart Noise Filtering Configuration
The following table lists the parameter you can use to configure smart noise filtering.
Parameter features.noise_filtering_rev.enable
It enables or disables the phone to block out the slight noise from the far end when there is no speech
in a call.
Description
Note: After smart noise filtering is enabled, if the far end is playing music or calling a voice service, the
background music will also be eliminated when there is no speech in a call.
0-Disabled
Permitted
Values
1-Enabled
Default 0
Supported
T57W, T54W, T53W, T53, T53C, T48U, T46U, T43U, T42U, T33P, T33G, T31P, T31G, T31, T30P, T30,
CP920, CP925, CP935W
Devices
Web UI Settings > Voice > Smart Noise Filtering > Smart Noise Filtering
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T53C/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T33P/T33G, X=1-4; for
T40P/T40G/T23P/T23G, X=1-3; for T31P/T31G/T31/T21(P) E2, X=1-2; for T30P/T30/T19(P)
E2/CP920/CP925/CP935W, X=1.

DTMF

DTMF (Dual Tone Multi-frequency) tone, better known as touch tone. DTMF is the signal sent from the IP phone to
the network, which is generated when pressing the IP phone's keypad during a call. Each key pressed on the IP
phone generates one sinusoidal tone of two frequencies. One is generated from a high-frequency group and the
other from a low-frequency group.
Topics

DTMF Keypad

Transmitting DTMF Digit
Suppress DTMF Display
Transfer via DTMF
Local DTMF Tone
DTMF Keypad
The DTMF keypad is laid out in a 4×4 matrix, with each row representing a low frequency, and each column rep-
resenting a high frequency. Pressing a digit key (such as '1') will generate a sinusoidal tone for each of two fre-
quencies (697 and 1209 hertz (Hz)).
DTMF Keypad Frequencies:
1209 Hz 1336 Hz 1477 Hz 1633 Hz
697 Hz 1 2 3 A
<y0000000000xx>.cfg
Audio Features
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