Documented specifications
Yealink · Manufacturer documentation available at review; remaining support period and local availability not established.
| Specification | Documented value |
|---|---|
| Display | Adjustable display Source ↗ |
| Wi-Fi | 2.4/5 GHz integrated Source ↗ |
| Bluetooth | 4.2 integrated Source ↗ |
| Expansion | Up to three EXP50 modules Source ↗ |
| DECT accessory | DD10K, up to four compatible handsets Source ↗ |
Unlisted fields remain unverified. Platform compatibility and remaining support life require confirmation for the exact ordered model.
What it is and why consider it
T57W targets executives and managers handling a substantial call load. Compare its larger touch-oriented workflow with the physical-key T54W before standardizing a desk role.
Reasons to choose something else
A touch interface is not automatically faster for a receptionist who relies on tactile keys. Evaluate the approved firmware and screen workflow directly, particularly for accessibility and headset-heavy use.
Deployment and acceptance checks
Pilot directory search, attended transfer and several held calls. Check display readability at the actual desk angle and recovery after a provisioning refresh.
Record the ordered model, hardware revision, installed firmware and calling platform together. Confirm administrator and provisioning ownership before connecting a previously used device. Keep the previous configuration and a supported recovery method before changing firmware; an arbitrary downgrade can remove security fixes.
Firmware, support and evidence
Use the linked Yealink support resources to match the device to its approved firmware and provisioning instructions. The facts above come from manufacturer documentation; no hands-on measurements, current price or merchant offer are implied.
Where the table does not specify display, SIP-account capacity, network ports, PoE, Wi-Fi, Bluetooth, codecs, headset or expansion support, that field remains unverified for this record. A base station, handset and accessory have different responsibilities; do not copy a feature between them. Confirm lifecycle notices and support entitlement before a fleet purchase.
Sources & applicability
Primary references for the technical details above. Operational examples and planning checklists are VoIP.info editorial guidance.
Examples require adaptation to your topology. No live PBX or hardware testing is claimed.