Official Partner
Yealink SIP- T43U
Feature-rich SIP Phone for Workers of Co-working Space
Boost Productivity with New Powerful Chipsets
Sound and Hear with Remarkable Clarity
Yealink Optima HD Voice technology combines cutting-edge hardware and software with wideband technology for maximum acoustic performance. 
Efficient Deployment and Management
Yealink T4U series supports effortless mass deployment and Zero Touch Provisioning with Yealink's Redirection and Provisioning Service (RPS) and Boot mechanism, making the device management labor-saving and efficient for the administrators.
Dual USB Ports for Flexible Expansion Choices
Color-screen Expansion Module EXP43
The 4.3-inch color screen expansion module is designed to offer advanced call handling capabilities with its simplified UI and up to 60 programmable keys for various features.
Yealink Wireless/Wired USB Headsets
Seamlessly compatible with Yealink wireless/wired USB headsets to meet the needs of users with large call volumes or headset preference and ideal for call center or administrative assistants.
Yealink T43U SIP Phone | Features at a Glance
User Interface Features
• 3.7" screen with backlight
Audio Features
• Optima HD voice with Acoustic Shield and Smart Noise Filtering
Basic Features
• Up to 12 SIP accounts
• PoE support
• Stand with two adjustable angles, wall mountable
Advanced Features
• Wi-Fi via WF40/WF50, Bluetooth via BT41
• Support expansion modules
• Support USB recording
Connectivity
• Dual USB ports, dual-port Gigabit Ethernet
• Headset, EHS support
| Feature | Description |
|---|---|
| Audio Features | |
| HD voice | HD handset, HD speaker |
| Hearing aid compatible (HAC) handset | |
| Acoustic Shield | |
| Smart Noise Filtering | |
| Wideband codec | AMR-WB (optional), G.722 |
| Narrowband codec | AMR-NB (optional), PCMU (G.711µ), PCMA (G.711A), G.723.1, G.729, G.729A, G.729B, G.729AB, G.726, iLBC |
| DTMF | In-band, Out-of-band(RFC 2833) and SIP INFO |
| Full-duplex hands-free speakerphone with AEC | |
| VAD, CNG, AEC, PLC, AJB, AGC | |
| Phone Features | |
| 12 VoIP accounts | |
| One-touch speed dial, redial | |
| Call forward, call waiting, call transfer, call hold | |
| Call return, group listening | |
| Emergency call | |
| Mute, DND | |
| Auto answer | |
| Hotline | |
| 5-way conference call | |
| Direct IP call without SIP proxy | |
| Ring tone selection/import/delete | |
| Set date time manually or automatically | |
| Dial Plan, XML Browser, Action URL/URI | |
| RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035) | |
| Dual USB ports (2.0 compliant) | |
| Bluetooth headset through BT40/BT41/BT52 | |
| DECT wireless headset (Yealink WH62 Portable/WH63 Portable) | |
| Contact synchronization through BT40/BT41/BT52 | |
| Simultaneous connection of one headset and one mobile phone through BT40/BT41/BT52 | |
| Wi-Fi through WF40/WF50 | |
| USB call recording through USB flash drive | |
| USB headset | |
| Expansion Module EXP43 | |
| Wireless Headset Adapter EHS40 | |
| USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone/wireless headset UH38, USB connectivity to Yealink wired headset UH34/UH36/UH37: | Basic functions: Answer / end, call mute, Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple calls control |
| Enhanced DSS key | |
| Directory | |
| Local phonebook up to 1000 entries | |
| Blocklist | |
| XML/LDAP remote phonebook | |
| Smart dialing | |
| Phonebook search/import/export | |
| Call history: dialed/received/missed/forwarded | |
| IP-PBX Features | |
| Busy Lamp Field (BLF), Bridged Line Apperance (BLA) | |
| Anonymous call, anonymous call rejection | |
| Hot-desking, voice mail | |
| Flexible seating, Executive and Assistant | |
| Call park, call pickup | |
| Centralized call recording, call recording | |
| Visual voice mail | |
| Display and Indicator | |
| 3.7" 360x160-pixel graphical LCD with backlight | |
| LED for call and message waiting indication | |
| Dual-color (red or green) illuminated LEDs for line status information | |
| Intuitive user interface with icons and soft keys | |
| Multilingual user interface | |
| Caller ID with name and number | |
| Power saving | |
| Feature keys | |
| 8 line keys with LED | |
| 8 line keys can be programmed up to 21 paperless DSS keys (3-page view) | |
| 5 features keys: message, headset, mute, redial, hands-free speakerphone | |
| 4 context-sensitive “soft” keys | |
| 6 navigation keys | |
| 2 volume control keys | |
| Illuminated mute key | |
| Illuminated headset key | |
| Illuminated hands-free speakerphone key | |
| Interface | |
| Dual-port Gigabit Ethernet | |
| Power over Ethernet (IEEE 802.3af), Class 2 | |
| 2 x USB port (2.0 compliant) | |
| 1 x RJ9 (4P4C) handset port | |
| 1 x RJ9 (4P4C) headset port | |
| Other Physical Features | |
| Color: Classic Grey | |
| Stand with 2 adjustable angles | |
| Wall mountable | |
| External Yealink AC adapter (optional) | AC 100-240 V input and DC 5 V/1.2 A output |
| USB output currency: 5 V 500 mA | |
| Power consumption (PSU): 0.9-2.2 W | |
| Power consumption (PoE): 1.5-3.2 W | |
| Dimension (WDH*T): | 224.9 × 206.2 × 174.9 × 52 mm |
| Operating humidity: 5% to 90%, noncondensing | |
| Operating temperature: -10 to +45°C (+14 to 113°F) | |
| Storage temperature: -30 to +70°C (-22 to +158°F) | |
| Management | |
| Configuration: browser/phone/auto-provision | |
| Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy | |
| Auto-provision with PnP | |
| Broadsoft device management | |
| Zero-sp-touch TR-069 | |
| Phone lock for personal privacy protection | |
| Reset to factory, reboot | |
| Package tracing export, system log | |
| Network and Security | |
| SIP v1 (RFC2543), v2 (RFC3261) | |
| Call server redundancy supported | |
| NAT traversal: STUN mode | |
| Proxy mode and peer-to-peer SIP link mode | |
| IP assignment: static/DHCP | |
| HTTP/HTTPS web server | |
| Time and date synchronization using SNTP | |
| UDP/TCP/DNS-SRV(RFC 3263) | |
| QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP | |
| SRTP for voice | |
| Transport Layer Security (TLS 1.3) | |
| HTTPS certificate manager | |
| AES encryption for configuration file (AES256) | |
| Digest authentication: MD5/SHA1/SHA224/- | SHA256/SHA384/SHA512 |
| OpenVPN, IEEE802.1X, L2TP VPN | |
| IPv6 | |
| LLDP/CDP/DHCP VLAN | |
| ICE | |
| WPA2/WPA3 | |
| Secure boot | |
| GARP (Generic Attribute Registration Protocol) | |
| Package Features | |
| Package content: | |
| - Yealink SIP-T43U IP phone | |
| - Handset with handset cord | |
| - Ethernet Cable (2m CAT5E UTP Cable) | |
| - Stand | |
| - Quick Start Guide | |
| - Power Adapter (Optional) | |
| - Wall Mount Bracket (Optional) | |
| Qty/CTN: 5 PCS | |
| N.W/CTN: 6.0 kg | |
| G.W/CTN: 6.6 kg | |
| Giftbox size: 246 × 223 × 120 mm | |
| Carton Meas: 627 × 256 × 235mm |
| Description | Downloads |
|---|---|
| Yealink-T4U-Series-Flyer | Downloads |
| Yealink T43U SIP Desktop Phone Datasheet | Downloads |
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