
Yealink SIP-T42U Standard Gigabit IP Phone, 2.7 inches Display (192x64 pixels), 12 SIP Accounts, Dual-port Gigabit Ethernet (10/100/1000 Mbps), PoE, Wi-Fi.
Yealink SIP-T42U Standard Gigabit IP Phone featuring a 2.7-inch display, 12 VoIP accounts, Optima HD voice, and Dual-port Gigabit Ethernet (10/100/1000 Mbps) for enterprise communication.
Product Overview
The SIP-T42U IP phone is a feature-rich business tool for excellent communications and extended functionality. T42U gives you a quieter operation and environment. Coming with plentiful built-in programmable keys, this 12-line IP phone guarantees enhanced productivity. With United Yealink Optima HD Voice technology, the T42U offers you superb audio quality and crystal-clear voice communications. The phone feels quicker and more responsive when performing call features. Moreover, the T42U puts dual USB ports in a phone that makes Bluetooth, Wi-Fi, USB headset, and USB recording come true, and you can use any two of them freely according to your needs. The Yealink new T4U series offers the same elegant appearance as the T4 line but with improvements for greater interoperability and better collaboration. The T4U series better builds the Yealink ecosystem and is compatible with more Yealink headsets, supporting intelligent channel switching* and using the phone to configure and upgrade headsets. Engineered for modern desktop communication, the SIP-T42U combines Yealink's renowned acoustic engineering with high-reliability enterprise telephony. Equipped with 12 VoIP accounts, a responsive 2.7-inch 192x64 color lcd with backlight, and Optima HD audio, it ensures clear, distraction-free voice transmission. With integrated dual-band Wi-Fi, built-in Bluetooth, and dual Gigabit Ethernet ports with PoE, the SIP-T42U delivers exceptional productivity and seamless deployment across enterprise PBX and unified communications platforms.
Why Buy This Product
Gigabit Wireline Speed
Dual Gigabit Ethernet ports provide high-speed PC passthrough while powering the phone via standard PoE.
Dual USB Port Versatility
Add optional Wi-Fi dongles, Bluetooth adapters, USB headsets, or call recording drives simultaneously.
Acoustic Shield Speech Clarity
Suppresses distracting background office noise so callers hear only your voice clearly.
Backlit Graphical Display
Clear 2.7-inch backlit graphical LCD ensures easy readability in both bright and dimly lit offices.
Best for These Applications
Standard Corporate Cubicles
Cost-effective, compact Gigabit desk phone for general office workers connected to Gigabit network drops.
Customer Service Desks
Agents handling moderate call volumes who benefit from clear visual screen status and USB headset support.
Retail Counters & Reception
Workspaces where a compact, professional VoIP phone fits neatly into tight counter spaces.
Classroom & Faculty Desks
Educational staff requiring dependable, multi-line VoIP phones with Gigabit computer passthrough.
Key Advantages
- 12 SIP VoIP Accounts:Handles multiple lines and shared call appearances smoothly.
- 15 Programmable DSS Keys:6 physical line keys expand across 3 pages to provide 15 customizable digital shortcuts.
- Standard PoE Powering:Operates over IEEE 802.3af PoE, eliminating power cords at wired network drops.
- Dual-Image Firmware Security:Ensures uninterrupted business availability by preventing firmware corruption during updates.
Frequently Asked Questions
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Weight | 1.16 |
| Shipping Weight | 1.26 |
| Sip Lines | 12 |
| Sip Accounts | 12 |
| Display Type | 2.7-inch 192x64 Color LCD with Backlight |
| Display Resolution | 192x64 pixels |
| Screen Size | 2.7 inches |
| Ethernet Ports | Dual-port Gigabit Ethernet (10/100/1000 Mbps) |
| Network Speed | 10/100/1000 Mbps Gigabit |
| Speakerphone | Full-Duplex Hands-Free Speakerphone with AEC |
| Headset Port | RJ9 Headset Port with EHS Support |
| Codec Support | G.722, AMR-WB, AMR-NB, G.711a/u, G.729AB, G.729A, G.729, G.726, iLBC, G.723.1 |
| Audio Conferencing | 5-way Local Audio Conferencing |
| Phonebook Capacity | 1000 Entries |
| Call History Records | 100 Records |
| Protocols | SIP v1 (RFC 2543), v2 (RFC 3261), IPv4/IPv6, TCP/IP/UDP, DHCP, DNS-SRV, SNTP, STUN |
| Security Protocols | SRTP, TLS 1.2 / TLS 1.3, HTTPS, 802.1x, OpenVPN, WPA2/WPA3, AES256 Encrypted Config |
| Power Supply | PoE (IEEE 802.3af Class 2) or Optional External 5V/2A DC Adapter |
| Mounting Type | Multi-Angle Desktop Stand / Wall-Mountable |
| Dimensions | 212 |
| Poe | Yes |
| Poe Class | IEEE 802.3af Class 2 |
| Gigabit Ports | Yes |
| Wifi | Yes |
| Wifi Frequency | Dual-Band 2.4GHz & 5.0GHz (802.11a/b/g/n/ac) |
| Usb Ports | 2 x USB 2.0 Type-A/Type-C Ports |
| Usb Headset Supported | Yes |
| Dss Keys | 6 |
| Acoustic Shield | Yes |
| Smart Noise Filtering | Yes |
| Hearing Aid Compatible | Yes |
| Operating System | Linux Embedded |
| Hd Voice | Yes |
| Wall Mountable | Yes |
| Stock | 10 |
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