SIP-T42U
Yealink (SIP-T42U) – IP Phone (Without PSU)
The Yealink SIP-T42U is a 12-line Gigabit SIP IP phone with HD audio, dual USB ports, PoE support, and a 2.7-inch backlit display. This version is supplied without PSU, making it ideal for deployments that use PoE network switches or already have compatible Yealink power adapters.
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Description
DESCRIPTION
The Yealink SIP-T42U is a business-class IP phone designed for office users who need reliable daily VoIP communication with Gigabit connectivity and expandable features. It supports up to 12 SIP accounts and includes a 2.7-inch backlit graphical display, making it suitable for reception areas, office desks, customer support teams, and general enterprise use.
This model features dual Gigabit Ethernet ports, HD voice quality, 5-way conferencing, and dual USB ports that allow expansion for Bluetooth, Wi-Fi, USB headset, and USB recording. It also supports PoE, which is especially useful when the device is supplied without PSU, because it can be powered directly from a PoE-enabled network switch.
The T42U is part of Yealink’s T4U business phone series and is built for professional environments that need stable call performance, easy provisioning, and compatibility with common SIP platforms and IP telephony systems.
| SPECIFICATION | DETAILS |
|---|---|
| Manufacturer | Yealink |
| Model | SIP-T42U |
| Product Type | SIP IP Phone |
| Power Supply | Without PSU / external power adapter not included |
| Power Options | PoE supported or optional external power adapter |
| SIP Accounts | Up to 12 SIP accounts |
| Display | 2.7″ 192 × 64 pixel graphical LCD with backlight |
| Ethernet Ports | Dual-port Gigabit Ethernet |
| USB Ports | 2 × USB 2.0 |
| Audio | Yealink Optima HD Voice, full-duplex speakerphone |
| Codec Support | Wideband and narrowband voice codecs |
| Line Keys | 6 line keys |
| DSS Keys | Up to 15 paperless DSS keys |
| Conferencing | 5-way local conference |
| Headset Support | RJ9 headset port, USB headset support, EHS support |
| Wireless Expansion | Bluetooth via BT40/BT41/BT52, Wi-Fi via WF40/WF50 |
| Mounting | Desktop stand with 2 adjustable angles, wall mountable |
| Network Security | TLS/SSL, dual firmware images |
| PoE | Yes |
| Included PSU | No |
| Typical Use | Office telephony, reception desks, business VoIP systems, enterprise communication |
