Yealink SIP-T33P Administrator's Guide

Audio Features
180
Web UI
Settings > Voice > Acoustic Shield > Acoustic Shield Mode
Parameter
features.acoustic_shield.level <y0000000000xx>.cfg
Description
It configures the noise suppression level for handsets and headsets.
The higher value represents the better noise suppression effect.
If it is set to 3, the phone automatically shields the noise out of 20 centimeters (7.9 inches) when you
are using the phone handset or a headset.
Permitted
Values
Integer from 1 to 3
Default
2
Supported
Devices
T57W, T54W, T53W, T53, T48U, T46U, T43U, T42U
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 <y0000000000xx>.cfg
Description
It enables or disables the phone to block out the slight noise from the far end when there is no speech
in a call.
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.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Supported
Devices
T57W, T54W, T53W, T53, T48U, T46U, T43U, T42U, T33P, T33G, T31P, T31G, T31, T30P, T30,
CP920
Web UI
Settings > Voice > Smart Noise Filtering > Smart Noise Filtering
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

Yealink SIP-T33P Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Wall mountable	Yes
Operating system installed	Linux
Lines quantity	4 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	4
Volume control	Buttons
Number of function keys	5
Display diagonal	2.4 \
Display resolution	320 x 240 pixels
Voice codecs	AGC, AJB, CNG, G.711a, G.711u, G.722, G.723.1, G.726, G.729, G.729A, PLC, VAD, iLBC
Security algorithms	AES, HTTPS
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
RJ-9 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Input frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
Power consumption (typical)	3 W
Power consumption (Power over Ethernet (PoE))	5 W
Number of handles included	1 pc(s)
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Depth	186 mm
Width	212 mm
Height	146 mm