Yealink SIP-T44U
Specifications
Calling
- SIP accounts / lines
- 12
- Programmable keys
- 21
- Local conference participants
- 5
Display
- Display size
- 2.8 in
- Display resolution
- 320 x 240
- Colour display
- Yes
Connectivity
- Ethernet
- Gigabit
- Power over Ethernet
- Yes
- Wi-Fi
- Optional adapter
- Wi-Fi standard
- Unknown
- Bluetooth
- Optional adapter
- Bluetooth version
- Unknown
- USB ports
- 2
Accessories
- Headset interfaces
- RJ9, USB, Bluetooth (adapter), EHS (adapter)
- Expansion modules
- EXP43 (up to 3; optional)
Physical
- Wall mountable
- Yes
Audio
- HD voice
- Yes
- Full-duplex speakerphone
- Yes
- Audio codecs
- G.722, PCMU, PCMA, G.723.1, G.729, G.729A, G.729B, G.729AB, G.726, iLBC
Security
- TLS signalling
- Yes
- SRTP media encryption
- Yes
Compatible phone systems
The indicator shows whether a compatible configuration path is documented, or whether the result still needs verification. A not-listed result does not mean technically incompatible. It does not replace checking the provider firmware branch, tenant, network and feature requirements.
3CX V20Compatible path documented
Listed firmware applies to 3CX V20. Cloud or remote phones need a router phone or SBC. Recheck the current provider release before deployment.
Compatible path documented Provisioning documented
Evidence reviewed: 2026-09-08
Provider-listed firmware: 108.87.0.26
Also listed for the router-phone role
Sources and scope
Yealink SIP-T44U. Provider documentation only. Regional availability, hardware revisions and headset combinations remain unverified. No tenant or device was tested.
- 3CX Yealink T4 configuration
Exact-model heading; Router Phones; Firmware Requirements
- 3CX V20 phone firmware
Phone Firmware table; exact model row; V20 scope note
Zoom PhoneCompatible path documented
Yealink phones require Zoom-specific firmware. A certification entry does not confirm every feature or regional deployment.
Compatible path documented On certified hardware list
Evidence reviewed: 2026-09-08
Provider-listed firmware: 108.87.3.1
Provider firmware date: 2026-07-19
Sources and scope
Yealink SIP-T44U. Provider documentation only. Regional availability, hardware revisions and headset combinations remain unverified. No tenant or device was tested.
- Zoom Phone certified hardware
Desk phones > Yealink; exact model rows; Yealink custom firmware required
Microsoft Teams SIP GatewayNeeds verification
This is SIP Gateway compatibility, not native Teams-phone certification. Use the gateway provisioning path and approved firmware; confirm tenant licensing, policies and network requirements.
Needs verification Not on reviewed list
Evidence reviewed: 2026-09-08
Sources and scope
Yealink SIP-T44U. Provider documentation only. Regional availability, hardware revisions and headset combinations remain unverified. No tenant or device was tested.
- Microsoft Teams SIP Gateway plan
Compatible devices > Yealink; Minimum firmware version and Approved firmware version columns