Yealink SIP-T42S (2.7 inch) IP Phone LCD Backlit PoE USB Port Opus Codec 12 SIP Accounts (Black) - (NET3526)

£108.77 inc VAT

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The SIP-T42S IP phone is a dynamic business communications tool for superior voice communications and extended functionality. It has a faster, more responsive interface than the T42G and offers better overall performance. The SIP-T42S is a 12-line IP phone with multiple programmable keys for enhancing productivity. It is with Yealink Optima HD Voice Technology and wideband codec of Opus for superb sound quality and crystal clear communications. What's more, the SIP-T42S is built with Gigabit Ethernet technology for rapid call handling. Plus, with an all-new USB port, the SIP-T42S boasts unparalleled functionality and expansibility, which comes ready for future Bluetooth, Wi-Fi and USB recording features. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration. Yealink Optima HD Voice technology combines cutting-edge hardware and software with wideband technology for maximum acoustic performance. Being a totally open, highly versatile audio codec, Opus, is designed to perform a higher HD audio quality than other wideband codecs in a high network bandwidth; However, if your current network quality is poor, Opus can provide you with a better audio quality than other narrow band codecs. And its hearing aid compatible (HAC) handset helps the person who is with hearing loss to hear the voice more clearly. With an all-new USB port, the SIP-T42S is your ideally powerful and expandable office phone which comes ready for future Bluetooth, Wi-Fi and USB recording features. It has three pages of flexible buttons which can be programmed with up to 15 paperless DSS keys.

Main Features:

  • 2.7-inch 192x64 pixel graphical LCD with backlight
  • Opus codec support
  • 1 x USB port (2.0 compliant)
  • T4S Auto-P template unified
  • T4S firmware unified
  • Up to 12 SIP accounts
  • Power over Ethernet (PoE) support
  • Paperless label design
  • Headset, EHS support
  • Integrated stand with 2 adjustable angles
  • Wall mountable


Backlight Yes
Display Type LCD
Colour/Monochrome Monochrome
Resolution (Maximum) 192 x 64 Pixels
Ringer LED Yes
Power Adaptor Output 5 V DC
Voltage 100 to 240 V AC
SIP (RFC 3261) version 2 Yes
G.711 Compression Yes
G.729ab Compression G.729a/b
DTMF Supported
VAD (Voice Activity Detection) Yes
Comfort Noice Generation (CNG) Yes
STUN (RFC 3489) Yes
Support TOS & Diffserv Tagging Yes
Direct IP to IP Call Yes
VoIP Numbers 12
Operating Temperature -10 to 50 °C
Operating Humidity 10 to 95 %
Form Factor Corded IP Telephone
Case Colour Black
In The Box Yealink SIP-T42S IP phone, Handset with handset cord, Ethernet Cable (2m CAT5E UTP Cable), Stand, Quick Start Guide
Width 21.2 cm
Depth 18.9 cm
Height 17.5 cm
Weight 1.6 kg
Pack Quantity 1
Hand Set
Speakerphone Yes
Corded/Cordless Corded
User Controls
Illuminated Keypad Yes
Dial Yes
Navigation Navigation Key
Mute Yes
Phone Book 1000 Entries
Ringtone Buttons Yes
Volume Control Yes
Auto Redial Button Yes
Caller ID Yes
Hold Button Yes
Other Buttons 6 line keys with LED • 6 line keys can be programmed up to 15 paperless DSS keys (3-page view) • 5 features keys: Message, Headset, Mute, Redial, Hands-free speakerphone • 4 context-sensitive 'soft' keys • 6 navigation keys • 2 volume control keys
RJ-45 Ports 2 x RJ-45
Headset Port Yes
USB Ports 1 x USB 2.0
Handset Connector 1 x RJ9
Phone Stand Yes
Regulatory Approvals CE, FC, RoHS, REACH, ISO 9001
Network Speeds Supported 10/100/1000 Mbps
Network Features SIP v1 (RFC2543), v2 (RFC3261); Call server redundancy supported; NAT traversal: STUN mode; Proxy mode and peer-to-peer SIP link mode; IP assignment: static/DHCP; HTTP/HTTPS web server; Time and date synchronization using SNTP; UDP/TCP/DNS-SRV(RFC 3263); QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP; SRTP for voice; Transport Layer Security (TLS); HTTPS certificate manager; AES encryption for configuration file; Digest authentication using MD5/MD5-sess; OpenVPN, IEEE802.1X; IPv6; LLDP/CDP/DHCP VLAN; ICE
Power Over Ethernet Enabled Yes
Warranty 1 year from the date of purchase or 2 years from the date of manufacture, whichever is longer.
Management Configuration: browser/phone/autoprovision • Auto provision via FTP/TFTP/HTTP/HTTPS for mass deployment • Auto-provision with PnP • BroadSoft device management • Zero-sp-touch, TR-069 • Phone lock for personal privacy protection • Reset to factory, reboot • Package tracing export, system log
Item Details
Manufacturer Yealink
Part Number T42S
EAN 6938818301917
Condition New




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