Yealink SIP-T43U Getting Started

Recovery Mode on Yealink IP phones
16
For CP960 IP Phones
This section is only applicable to CP960 IP phones.
Procedures:
1. Reconnect the PoE adapter.
2. Long tap the Home touch key when the touch screen prompts “Initializing…” to trigger the recovery
mode.
The IP phone will read and upgrade the firmware from the USB flash drive, and the touch screen
prompts “Firmware Updating”.
When upgrading successfully, the touch screen prompts “Initializing”.
3. If the IP phone fails to upgrade, the LCD screen will indicate the failure. You need to check and make
sure:
 The file system of the USB flash drive should be FAT32.
 The USB flash drive has been successfully connected to the IP phone.
 The resource files are correctly renamed and placed on the USB flash drive.
 Repeat the recovery mode procedures to try again.
The LCD screen prompts “Update failed (-1)” when failing to upgrade:
4. Tap Settings->General to verify the current firmware version after upgrading successfully.
…. Update failed (-1) ….

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