Yealink SIP-T42U IP Phone - No PSU

About the Yealink SIP-T42U IP Phone

The New Generation T4U Series greatly improves Call Experience and Work Efficiency, with Dual USB Ports, Ultra HD Sound Quality, Faster Response Speed, and even more Advanced Features. The new T4U Series are a Powerful Assistant for any Modern Business.

The SIP-T42U IP Phone is a feature rich business tool for excellent communications and extended functionality. Designed with built in Programmable Keys the T42U 12 Line IP Phone guarantees Enhanced Productivity. United Yealink Optima HD Voice Technology and Wideband Codec of Opus ensures superb Audio Quality and Crystal Clear Voice Communications from the T42U.

The T42U feels quicker and more responsive when performing Call Features, all T4U models are equipped with Dual USB Ports, making Bluetooth, Wi-Fi and USB Recording even easier, use any two of them freely according to your needs, to enrich Phone Features.

The Yealink new T4U Series offers the same elegant appearance as the T4 Series, but with improvements for greater interoperability and better collaboration.

Key Features and Benefits:

Easy Customisation and High Expansibility

Accompanied by two USB Ports the Yealink T42U is the ideal choice for the Office, making Bluetooth, Wi-Fi, USB Headset and USB Recording possible, and you can use any two of them freely according to your needs to enrich phone features. The Phone has 3 pages of Flexble Buttons that can be easily progeammed with 15 Paperless DSS Keys at most.

HD Audio

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 narrowband codecs. And its Hearing Aid Compatible (HAC) Handset helps anyone with hearing loss to hear the voice more clearly.

Efficient Installation and Provisioning

The Yealink T4U Series supports Efficient Provisioning and effortless mass deployment with Yealink’s Redirection and Provisioning Service (RPS) and Boot mechanism to help you realize the Zero Touch Provisioning without any complex manual settings, which makes the T4U Series simple to deploy, easy to maintain and upgrade. Furthermore, a Unified Firmware and auto-p template that applies to all T4U Phone models, saves even more time and costs for businesses, as well as simplifies the management and maintenance.

Secure Transport and Interoperability

Yealink T4U Series uses SIP over Transport Layer Security (TLS/SSL), which is the latest network security technology. It’s also compatible with leading soft switch suppliers, such as 3CX, Broadsoft Broadworks. Moreover, it is carried with dual firmware images that gives you a enterprise-level protection to avoid bricking your system once upgrade failed.

Boost Productivity with New Powerful Chipsets

• Sleek Experience for Voice Communication
• Reliable System Stability
• Scalable for Future Expansions
• 5 Way Conferencing
• Optimised Operating Speed

Main Features at a Glance

• 2.7 Inch - 192 x 64 Pixel Graphical LCD with Backlight
• Dual USB Ports
• Dual Firmware Images
• Opus Codec Support
• T4U Auto-P Template Unified
• T4U Firmware Unified
• Up to 12 VoIP Accounts
• PoE Support
• Dual Port Gigabit Ethernet
• USB Headset and EHS Support
• Wi-Fi via WF40 | WF50
• Bluetooth via BT40 | BT41
• Stand with2 Adjustable Angles
• Wall Mountable

Audio Features

• HD Voice, HD Handset. HD Speaker
• Hearing Aid Compatible (HAC) Handset
• Acoustic Shield
• Wideband Codec - AMR-WB (Optional) Opus, G.722
• Narrowband Codec - AMR-NB (Optional), Opus, G.711(A/µ), G.723.1, G.729AB, G.726, iLBC
• DTMF - In-Band, Out-of-Band (RFC 2833) and SIP INFO
• Full Duplex Hands-Free Speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC

Phone Features

• 12 VoIP Accounts
• One Touch Speed Dial, Redial
• Call Forward, Call Waiting, Call Transfer, Call Hold
• Call Return, Group Listening, Emergency Call
• Mute, Auto Answer, DND Hotline
• 5 Way Conference Call
• Direct IP Call without SIP Proxy
• Ringtone Selection - Import/Delete
• Set Date. Time Manually or Automatically
• Dial Plan, XML Browser, Action URL/URI
• RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
• Dual USB Ports (2.0 compliant) - Bluetooth Earphone Through BT40 / BT41, Contact Synchronisation Through BT40 / BT41, Wi-Fi Through WF40 / WF50, USB Call Recording Through USB Flash Drive, USB Headset, Wireless Headset Adapter EHS40
• Enhanced DSS Key

Directory

• Local Phonebook - Up to 1000 Entries
• Black List
• XML/LDAP Remote Phonebook
• Smart Dialing
• Phonebook Search / Import / Export
• Call History - Dialed/ Received / Missed / Forwarded

IP-PBX Features

• Busy Lamp Field (BLF)
• Bridged Line Appearance (BLA)
• Anonymous Call, Anonymous Call Rejection
• Hot Desking, Voicemail
• Flexible Seating
• Executive and Assistant
• Call Park, Call Pickup
• Centralised Call Recording, Call Recording
• Visual Voicemail

Display and Indicator

• 2.7 Inch 192 x 64 Pixel Graphical LCD with Backlight
• LED for Call and Message Waiting Indication
• Dual Colour (Red or Green) Illuminated LED's for Line Status Information
• Intuitive User Interface with Icons and Soft Keys
• Multilingual User Interface
• Caller ID with Name and Number
• Power Saving

Feature Keys

• 6 Line Keys with LED
• 6 Line Keys can be Programmed up to 15 Paperless DSS Keys (3 Page View)
• 5 Feature Keys - Message, Headset, Mute, Redial, Handsfree Speakerphone
• 4 Context Sensitive Soft Keys
• 6 Navigation Keys
• 2 Volume Control Keys
• Illuminated Mute Key
• Illuminated Headset Key
• Illuminated Hands-Free Speakerphone Key

Interface

• 2 x RJ45 10/100/1000M Ethernet Ports
• Power over Ethernet (IEEE 802.3af), Class 3
• 2 x USB Ports (2.0 Compliant)
• 1 x RJ9 (4P4C) Handset Port
• 1 x RJ9 (4P4C) Headset Port

Other Physical Features

• Colour - Classic Grey
• External Yealink AC Adapter - AC Adapter Not Included - AC 100~240V Input and DC 5V/2A Output
• Wall Mountable - Wall Mount Bracket Not Included
• USB Output Currency - 5V 1A
• Dimensions - 212mm x 189mm x 175mm x 54mm (W x D x H x T)

Management

• Configuration - Browser/Phone/Auto-Provision
• Auto Provision via FTP/TFTP/HTTP/HTTPS for Mass Deploy
• Auto-Provision with PnP
• Zero-sp-Touch, TR-069
• Phone Lock for Personal Privacy Protection
• Package Tracing Export, System Log
• Reset to Factory, Reboot

Network and Security

• SIP v1 (RFC2543), v2 (RFC3261)
• NAT Traversal - STUN Mode
• Call Server Redundancy Supported
• Proxy Mode and Peer-to-Peer SIP Link Mode
• IP Assignment - Static DHCP
• HTTP/HTTPS Web Server
• Time and Date Synchronisation 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
• IPv6
• OpenVPN, IEEE802.1X
• LLDP/CDP/DHCP VLAN
• ICE

Package Contents

• Yealink SIP-T42U IP Phone
• Handset with Handset Cord
• Ethernet Cable (2m CAT5E UTP Cable)
• Stand
• Quick Start Guide