Twelve accounts, dual USB and flexible expansion for busy users who prefer physical keys.
The Yealink SIP-T43U is a professional monochrome-screen handset with strong call-handling capacity and extensive accessory support. Its dual USB ports can support two compatible functions at once, including headsets, call recording, Bluetooth, Wi-Fi and expansion modules.
At a glance
- 12 VoIP accounts
- 3.7-inch 360 × 160 backlit display
- Dual-port Gigabit Ethernet
- Two USB 2.0 ports
- Power over Ethernet
- Eight line keys with up to 21 paperless DSS assignments
- Supports EXP43 expansion modules
Why choose the T43U?
Optima HD audio
- HD handset and HD speaker
- Hearing-aid compatible handset
- Acoustic Shield and Smart Noise Filtering
- Full-duplex speakerphone with echo cancellation
- Wideband G.722 and optional AMR-WB support
Dual-USB flexibility
- Use two supported USB functions concurrently
- USB wired or wireless headsets
- Optional Bluetooth through BT40, BT41 or BT52
- Optional Wi-Fi through WF40 or WF50
- USB call recording to flash drive
- EHS40 wireless-headset adaptor support
High call-handling capacity
- Eight LED line keys
- Up to 21 paperless DSS keys over three pages
- Connect up to three EXP43 modules
- Up to 180 additional programmable expansion keys
- 5-way local conferencing
- Busy Lamp Field, park, pickup and executive/assistant functions
Efficient deployment
- Unified T4U firmware and provisioning template
- Yealink RPS and zero-touch provisioning
- FTP, TFTP, HTTP and HTTPS auto-provisioning
- Browser, phone and automatic configuration
- BroadSoft device management and TR-069
- Dual firmware images and remote diagnostics
Detailed specifications
Display and controls
- 3.7-inch 360 × 160 monochrome LCD with backlight
- Caller ID by name and number
- Call/message and red/green line-status LEDs
- Four context-sensitive soft keys
- Six navigation keys and two volume keys
- Illuminated mute, headset and speakerphone keys
- Two-angle stand and optional wall mounting
Call features
- Hold, forward, waiting, transfer and return
- One-touch speed dial, redial and hotline
- Mute, DND, group listening and auto answer
- Emergency and direct IP calling
- 5-way conference
- Custom ringtones, dial plan, XML browser and Action URL/URI
- RTCP-XR voice-quality monitoring
Directories and history
- Local phonebook for up to 1,000 entries
- Blocklist
- XML and LDAP remote phonebooks
- Smart dialling
- Search, import and export
- Dialled, received, missed and forwarded history
Hosted PBX features
- BLF and BLA
- Voicemail and visual voicemail
- Hot-desking and flexible seating
- Call park and pickup
- Executive/assistant functions
- Centralised and local recording
- Anonymous calling and rejection
Connections
- Two Gigabit Ethernet ports
- IEEE 802.3af PoE, Class 2
- Two USB 2.0 ports
- RJ9 handset and RJ9 headset ports
- EXP43, EHS40 and supported Yealink headset compatibility
- Optional 5 V / 1.2 A power adaptor
Network and security
- SIP v1/v2 and server redundancy
- IPv4/IPv6, static/DHCP and SNTP
- VLAN, QoS, LLDP, CDP and ICE
- SRTP and TLS 1.3
- HTTPS certificates and AES-256 configuration encryption
- Multiple digest algorithms, 802.1X, OpenVPN and L2TP VPN
- WPA2/WPA3, secure boot and GARP
Physical details
- Classic Grey finish
- Approx. 224.9 × 206.2 × 174.9 × 52 mm
- Power: about 0.9–2.2 W by adaptor or 1.5–3.2 W by PoE
- Operating temperature: −10°C to 45°C
- Operating humidity: 5–90%, non-condensing
- Package includes phone, handset and cord, 2 m Ethernet cable, stand and quick-start guide
- Power adaptor and wall bracket are optional
Who the T43U suits
Busy office users, shared administrative desks, supervisors and reception overflow requiring numerous programmable keys.
Installation note: Wi-Fi and Bluetooth require compatible USB dongles. Accessory combinations and EXP43 power requirements should be confirmed when configuring the system.
Supplied, provisioned and supported by AbleTech
We can supply the T43U as part of a new AbleTech Hosted PBX system or add it to a compatible existing AbleTech service. We provision user accounts, line keys, call-flow features, directories and supported accessories, then provide ongoing support.
Is the Yealink T43U right for your business?
Tell us how the user works and we will confirm the best handset, accessories and phone-system configuration.