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Yealink: SIP-T42U

Yealink SIP-T42U Standard Gigabit IP Phone

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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.

verified2.7" 192x64 graphical LCD with backlightverifiedDual Gigabit PoE portsverifiedDual USB ports for expansionverified12 SIP VoIP accountsverifiedOptima HD Voice with Acoustic Shieldverified6 line keys & 15 DSS shortcuts
KES 16,500.00KES 20,625.00
local_offerSave KES 4,125 today
1 Year Manufacturer Warranty

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

Yes. Inserting an optional Yealink WF50 USB dongle enables Wi-Fi, and a BT42 dongle adds Bluetooth for wireless headsets.
No. The T42U does not support external expansion modules; if you need expansion modules, choose the T43U, T46U, or T48U.
As an enterprise PoE phone, it is powered over the Ethernet cable; an external DC power supply is available optionally if PoE is unavailable.
Yes. Inserting a USB flash drive into either USB port enables one-touch audio call recording directly from the phone.

Technical Specifications

ParameterSpecification
Product Weight1.16
Shipping Weight1.26
Sip Lines12
Sip Accounts12
Display Type2.7-inch 192x64 Color LCD with Backlight
Display Resolution192x64 pixels
Screen Size2.7 inches
Ethernet PortsDual-port Gigabit Ethernet (10/100/1000 Mbps)
Network Speed10/100/1000 Mbps Gigabit
SpeakerphoneFull-Duplex Hands-Free Speakerphone with AEC
Headset PortRJ9 Headset Port with EHS Support
Codec SupportG.722, AMR-WB, AMR-NB, G.711a/u, G.729AB, G.729A, G.729, G.726, iLBC, G.723.1
Audio Conferencing5-way Local Audio Conferencing
Phonebook Capacity1000 Entries
Call History Records100 Records
ProtocolsSIP v1 (RFC 2543), v2 (RFC 3261), IPv4/IPv6, TCP/IP/UDP, DHCP, DNS-SRV, SNTP, STUN
Security ProtocolsSRTP, TLS 1.2 / TLS 1.3, HTTPS, 802.1x, OpenVPN, WPA2/WPA3, AES256 Encrypted Config
Power SupplyPoE (IEEE 802.3af Class 2) or Optional External 5V/2A DC Adapter
Mounting TypeMulti-Angle Desktop Stand / Wall-Mountable
Dimensions212
PoeYes
Poe ClassIEEE 802.3af Class 2
Gigabit PortsYes
WifiYes
Wifi FrequencyDual-Band 2.4GHz & 5.0GHz (802.11a/b/g/n/ac)
Usb Ports2 x USB 2.0 Type-A/Type-C Ports
Usb Headset SupportedYes
Dss Keys6
Acoustic ShieldYes
Smart Noise FilteringYes
Hearing Aid CompatibleYes
Operating SystemLinux Embedded
Hd VoiceYes
Wall MountableYes
Stock10
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