Yealink SIP-T43U

Phone Keys
The following keys display on the screen:
Keys Funcons
Menu.
Turns Headset o/on.
Turns Speakerphone o/on.
Mutes/unmutes Speaker.
Holds/Resumes a Call.
Transfers a call.
Connects to Voicemail.
Le/Right selects Accounts or Call Lists.
Up/Down selects Contacts or Entries.
Adjusts the volume.
Conrms acons. Answers incoming calls.
Cancels acons. Rejects incoming calls.
Place a Call
Only one call can be Acve at any me.
To place a call, do one of the following:
• Use the handset, headset or speakerphone, rst.
Enter the phone number and Send.
• Enter the phone number and Send. Use the handset,
headset or speakerphone.
• Select a Contact from a call list and Send.
To place a new call during an Acve call, do one of the
following:
• Press a Line key. The Acve call is placed on Hold.
Enter a phone number and Send.
• Press Hold to place the Acve call on Hold. Press
NewCall. Enter a number and Send.
Redial a Call
Redial opons include:
• Redial the last dialed number: press Redial twice.
• Redial a previously dialed number: press Redial once
to enter Placed Calls list. Use the up/down arrows to
select the number and Redial or Send.
Answer a Call
Use the handset, headset or speakerphone.
To answer a new call while on an Acve call, press
Answer. The current call is placed on Hold.
End a Call
To end an Acve call, replace the handset, press the
headset or speakerphone key or End Call.
To end a Held call, navigate to the call and press Resume
> End Call.
Hold and Resume a Call
When a call is placed on Hold, it is “parked” and caller is
unable to communicate with others on the line. Mulple
calls can be on Hold.
During an Acve call, select Hold. To resume, select the
Held call and press Resume.
Forward a Call
To manually Forward incoming calls:
• While the phone is ringing, press FWD.
• Enter a phone number and Send.
To automacally Forward all calls:
• Select Menu>Features>Call Forward. Select a Line, if
available.
• Select a Forwarding Type (Always, Busy, No Answer).
If No Answer is selected, enter the number of rings or
ring me before the call is forwarded.
• Enter a forwarding number and Save.
To disable call forwarding:
• Select Menu>Features>Call Forward and a Line, if
mulple Lines.
• Select a Forwarding Type > Enter > Disable > Save.
Forward a Call with Find Me / Follow Me:
Set up Find Me / Follow Me in Applicaon Framework or
the portal to forward calls, using the linked instrucons.
Transfer a Call
Transfer a call as follows:
• Blind (automac) - Press Transfer. Enter a number or
select a Contact and Trans.
• Aended (introducon) - Press Transfer. Enter a
number or select a Contact and Send. Press Transfer
aer the Contact answers.
This guide covers the basic features and operaon of the
Yealink
®
SIP T43U IP Desktop telephone.
For more informaon, refer to the Star2Star Knowledge
Base at knowledge.star2star.com.
Copyright © 2021, Star2Star Communicaons
Phone Screens
The Home/Idle LCD screen is the default view for the
phones.
The 2.7” display screen is surrounced by sokeys that
perform specic funcons:
Yealink
®
SIP T43U IP
Desktop Telephone
Quick Start Guide

Yealink SIP-T43U Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Wall mountable	Yes
Sustainability certificates	REACH, RoHS
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Power consumption (typical)	2.2 W
Bluetooth version	4.1
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP/TFTP/HTTP/HTTPS, IPv6, LLDP/CDP/DHCP VLAN
USB 2.0 ports quantity	2
Lines quantity	12 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
Voice codecs	AGC, AJB, AMR-NB, AMR-WB, G.711Mu, G.711a, G.723.1, G.726, G.729ab, OPUS, PLC, VAD, iLBC
Number of handles included	1 pc(s)
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	3.7 \
Display resolution	360 x 160 pixels
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	206.2 mm
Width	224.9 mm
Height	174.9 mm
Package depth	223 mm
Package width	246 mm
Package height	120 mm

Summary

Phone Keys Overview

Hold and Resume Call Key

Places an active call on hold or resumes a held call.

Transfer Call Key

Initiates transferring an active call to another party.

Call Management

Placing a Call

Instructions for initiating a call using number or contact.

Placing a Call During an Active Call

Redial a Call

Answering a Call

How to answer an incoming call while on an active call.

Ending a Call

Methods to terminate an ongoing call.

Ending a Held Call

Hold and Resume a Call

Steps for placing a call on hold and retrieving it.

Forward a Call

Instructions for forwarding calls manually or automatically.

Transfer a Call

Procedures for blind and attended call transfers.