Yealink SIP-T48U IP Phone - No PSU

About the Yealink SIP-T48U 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 new Yealink SIP-T48U presents a dynamic business communication solution to executives and to professionals. The Phone features a 7 Inch Colour Touch Screen that makes the switch between pages and applications quick, convenient and easy. United Yealink Optima HD Voice Technology and Wideband Codec of Opus ensures superb Audio Quality and Crystal Clear Voice Communications from the T48U.

All T4U models are equipped with Dual USB Ports, meaning the entire series allows users to connect two Bluetooth Dongles, Wi-Fi Dongles, EHS40 Headset Adapters, USB Headsets or USB Disks at the same time. With Dual USB Ports, the new T4U Series flexibly adapts to various scenarios and demands

The new Yealink 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

The SIP-T48U features a 7 Inch 800 x 480 Pixel Backlit Colour Touch Screen that enables rich visual presentation and easy navigation. Accompanied by Two USB Ports the SIP-T48U makes Bluetooth, Wi-Fi, USB Headset and USB Recording possible, use any teo of them freely according to your needs to enrich phone features. The Phone has 29 One Touch DSS Keys that can be easily programmed to various features and can also connect up to 3 EXP43 Expansion Modules - providing up to 180 Additional Buttons with a screen based LCD Display and LED System.

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
• 10 Way Conferencing
• Optimised Operating Speed

Main Features at a Glance

• 7 Inch - 800 x 480 Pixel Color Touch Screen with Backlight
• Dual USB Ports
• Dual Firmware Images
• Opus Codec Support
• T4U Auto-P Template Unified
• T4U Firmware Unified
• Up to 16 VoIP Accounts
• Dual-Port Gigabit Ethernet
• PoE Support
• Paperless Label Design
• Headset, EHS Support
• Wi-Fi via WF40, WF50
• Bluetooth via BT40, BT41
• USB Recording
• Stand with Two Adjustable Angles
• Wall Mountable - Wall Mount Optional Accessory
• Supports EXP43 Colour Expansion Module

Audio Features

• HD Voice, HD Handset. HD Speaker
• Hearing Aid Compatible (HAC) Handset
• Acoustic Shield
• Smart Noise Filtering
• Codecs - AMR-WB (Optional), AMR-NB (Optional), Opus, G.722, 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

• 16 VoIP Accounts
• Call Hold, Mute, DND
• One Touch Speed Dial, Hotline
• Call Forward, Call Waiting, Call Transfer
• Group Listening
• Emergency Call
• Redial, Call Return, Auto Answer
• 10 Way Conferencing
• 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)
• USB Port (2.0 Compliant) for - Bluetooth Earphone Through BT40 / BT41, Contact Synchronisation Through BT40 / BT41, Simultaneous Connection of One Headset and One Mobile Phone Through BT40 / BT41, Wi-Fi Through WF40 / WF50, USB Call Recording Through USB Flash Drive, USB Headset, EXP43 Expansion Module, Wireless Headset Adapter EHS40 , USB/Bluetooth Connectivity to Yealink CP900 / CP700 Speakerphone, USB Connectivity to Yealink UH36 Headset - Basic Functions - Answer / End / Call Mute, Enhanced Function - Audio Optimisation, Redial, Call Hold, Volume Synchronisation, Multiple Call Control
• 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

• 7 Inch 800 x 480 Pixel Colour Touch Screen with Backlight
• 24 Bit Depth Colour
• LED for Call and Message Waiting Indication
• Wallpaper
• Intuitive User Interface with Icons and Soft Keys
• Multilingual User Interface
• Caller ID with Name, Number and Photo
• Screensaver
• Power Saving

Feature Keys

• 29 One Touch DSS Keys
• 7 Feature Keys: Message, Headset, Hold, Mute, Transfer, Redial, Hands-Free Speakerphone
• 6 Navigation Keys
• Volume Control Keys
• Illuminated Mute Key
• Illuminated Headset Key
• Illuminated Hands-Free Speakerphone Key

Interface

• Dual Port Gigabit Ethernet
• 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 - 266mm x 226mm x 185mm 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-T48U IP Phone
• Handset with Handset Cord
• Ethernet Cable (2m CAT5E UTP Cable)
• Stand
• Quick Start Guide