Description
Built for the Busiest Desk in the Office.
The Yealink SIP-T48U is the phone you put on an executive desk when a standard extension can’t keep up. With a 7-inch touchscreen, 16 SIP lines, and dual USB ports, it’s built for people whose day runs on back-to-back calls and quick line switching.
Key Features
- ✔ 7-inch 800 × 480 capacitive touchscreen with 24-bit color display
- ✔ Supports up to 16 SIP accounts
- ✔ Dual USB 2.0 ports for simultaneous accessories and call recording
- ✔ Yealink Optima HD Voice with Acoustic Shield and Smart Noise Filtering
- ✔ Dual-port Gigabit Ethernet with IEEE 802.3af Class 3 Power over Ethernet
- ✔ 29 one-touch DSS keys, expandable to over 180 programmable keys with EXP43 modules
- ✔ Dual firmware images for automatic recovery after failed updates
Every Second Counts. Every Call Matters.
Some professionals spend more time managing calls than attending meetings. Receptionists answer hundreds of enquiries daily, executives coordinate with clients across departments, and office managers keep business communication running smoothly. They need more than a standard desk phone. They need a communication tool that helps them work faster and more efficiently.
The Yealink SIP-T48U is a premium Yealink IP phone designed for high-volume business communication.
This isn’t a phone for someone who takes three calls a day. It’s for executives, receptionists, and call center managers who live on the device, people who need to see line status at a glance, transfer calls without hunting for a button, and trust that call quality holds up on hour six. The T48U sits at the top of Yealink’s T4U series, and it’s priced accordingly. For high-volume roles, though, that investment tends to pay for itself in saved time alone.What is in the Box
- Yealink SIP-T48U IP Phone
- Handset with handset cord
- Adjustable desk stand
- 2m Ethernet cable
- Quick Start Guide
Optional Accessories
- Power adapter (required if PoE is unavailable)
- Wall mount bracket
Recommended Accessories
Get the most from your Yealink SIP-T48U with compatible accessories designed to improve productivity. Choose one according to your usage needs. Some popular ones are listed below:- Yealink EXP43 Expansion Module: Ideal for receptionists and operators managing multiple extensions.
- Yealink WH62 DECT Wireless Headset: Enables hands-free communication with greater mobility.
- Yealink WH66 Wireless Headset: Premium wireless headset with integrated workstation.
- Yealink UH48 USB Headset: Professional wired headset with excellent call clarity.
- Yealink BT52 Bluetooth USB Dongle: Adds Bluetooth connectivity for compatible wireless headsets.
- Yealink WF50 Wi-Fi USB Dongle: Enables wireless network connectivity where Ethernet isn’t practical.
- Yealink EHS40 Adapter: Supports compatible wireless headsets with remote call control.
Product Overview
Product Overview
Technical Specification
T48U vs Competitors
Product Overview
Product Overview
🖥️ 7-Inch Touchscreen Designed for Faster Navigation
The Yealink SIP T48U features a large 7-inch capacitive touchscreen with an 800 × 480 resolution, providing an intuitive user experience similar to a modern smartphone. The responsive interface allows users to navigate menus quickly, making everyday communication more efficient. Searching contacts, transferring calls, viewing call history, and managing multiple lines can all be completed with just a few taps. The large colour display improves visibility, helping busy professionals work faster while reducing the time spent navigating menus.📞 Manage Up to 16 SIP Accounts with Ease
Built for demanding business environments, the T48U supports up to 16 SIP accounts, allowing multiple phone numbers, departments, or extensions to be managed from a single device. Whether used by receptionists, executives, administrators, or customer service teams, the phone makes handling high call volumes simple while reducing the need for multiple desk phones.🔊 Crystal-Clear HD Audio for Professional Conversations
Powered by Yealink Optima HD Voice, the T48U delivers rich, natural voice quality for both handset and hands-free conversations. Advanced audio technologies ensure every conversation remains clear and comfortable throughout the working day. With Acoustic Shield and Smart Noise Filtering, unwanted background sounds are significantly reduced, making the phone ideal for open offices, reception areas, and busy workplaces where clear communication is essential.🔌 Dual USB Ports for Greater Flexibility
The T48U includes two USB 2.0 ports, giving users greater flexibility than many traditional business desk phones. Multiple accessories can be connected simultaneously without sacrificing functionality. Connect a compatible USB headset while using optional Bluetooth or Wi-Fi adapters, attach expansion modules, or enable USB call recording to meet your organisation’s communication requirements.🔒 Enterprise Security You Can Trust
Business communication requires enterprise-grade protection. The T48U incorporates a comprehensive security framework, including TLS 1.3, Secure Boot, AES-256 encrypted configuration files, VPN support, and dual firmware images that help protect sensitive business communications while ensuring reliable operation. These security technologies make the T48U an excellent choice for organisations that prioritise secure voice communications, simplified device management, and dependable firmware recovery.📈 Built to Grow with Your Business
As your organisation expands, the T48U grows with it. The phone supports up to three Yealink EXP43 Expansion Modules, increasing capacity to more than 180 programmable DSS keys for rapid access to contacts, speed dials, BLF monitoring, and call transfers. This scalability makes the T48U an excellent solution for reception desks, operator consoles, executive assistants, and businesses that manage a high volume of incoming calls.⚡ Simple Deployment with Power over Ethernet (PoE)
Supporting IEEE 802.3af Power over Ethernet (PoE), the T48U receives both power and network connectivity through a single Ethernet cable. This reduces cable clutter, eliminates the need for separate power adapters in most installations, and simplifies office-wide deployments. For IT teams, PoE enables faster installation, cleaner desk setups, and easier management across corporate offices, call centres, and enterprise environments.Technical Specification
Technical Specifications
| Parameter | Description |
|---|---|
| Display | 7-inch 800 × 480 capacitive touchscreen, 24-bit colour display with backlight. |
| SIP Accounts | Supports up to 16 VoIP (SIP) accounts. |
| Handset | Hall switch technology for quieter handset pickup and hang-up, Hearing Aid Compatible (HAC). |
| Audio – Wideband Codec | AMR-WB (optional), G.722. |
| Audio – Narrowband Codec | AMR-NB (optional), G.711μ/A, G.723.1, G.729A/B/AB, G.726, iLBC. |
| Audio Processing | Full-duplex hands-free speakerphone with Acoustic Echo Cancellation (AEC), Voice Activity Detection (VAD), Comfort Noise Generation (CNG), Packet Loss Concealment (PLC), Adaptive Jitter Buffer (AJB), and Automatic Gain Control (AGC). |
| Audio Features | Yealink Optima HD Voice, Acoustic Shield, Smart Noise Filtering. |
| Feature Keys |
|
| Networking | Dual-port Gigabit Ethernet with IEEE 802.3af Class 3 Power over Ethernet (PoE). |
| USB Ports |
|
| Wi-Fi | Supports optional WF40 or WF50 USB Wi-Fi dongle (built-in Wi-Fi not available). |
| Bluetooth | Supports optional BT40, BT41, or BT52 USB Bluetooth dongles for compatible Yealink Bluetooth headsets (BH71, BH71 Workstation, BH71 Workstation Pro, BH72, BH76, UH38) and mobile phone pairing. |
| DECT Headset Support | Compatible with Yealink WH62 Portable and WH63 Portable DECT wireless headsets. |
| Wired Headset Support |
|
| Other Ports |
|
| Expansion | Supports up to 3 × Yealink EXP43 colour expansion modules, providing more than 180 additional programmable DSS keys. |
| Directory |
|
| Call Features |
|
| Firmware | Dual firmware images with unified T4U Auto-P templates and firmware compatibility across the T4U series. |
| Security |
|
| Provisioning |
|
| UC Platform Compatibility | Compatible with 3CX, BroadSoft, BroadWorks, Genesys, Metaswitch, Asterisk, and other SIP-based Unified Communications platforms. |
| Power | Power over Ethernet (IEEE 802.3af Class 3) or optional AC power adapter (100–240V AC input, DC 5V/2A output). |
| Power Consumption |
|
| USB Output Current | 5V / 1A. |
| Colour | Classic Grey. |
| Dimensions (W × D × H) | 266 × 226 × 185 × 54 mm. |
| Operating Environment |
|
| Compliance | CE, FCC, RoHS, REACH, and ISO 9001 compliant. |
| Package Contents |
|
T48U vs Competitors
The T48U competes in the premium executive-phone tier, a different bracket than the mid-range Yealink T73U. Here’s how it stacks up against two well-known touchscreen alternatives.
Yealink T48U vs Cisco IP Phone 8865 vs Poly CCX 600
| Feature | Yealink T48U | Cisco IP Phone 8865 | Poly CCX 600 |
|---|---|---|---|
| Display | 7″ touchscreen (800 × 480) | 5″ touchscreen (800 × 480) | 5″ touchscreen (portrait) |
| SIP Lines | Up to 16 | Multiple (varies by configuration) | Multiple (varies by configuration) |
| USB Ports | 2 × USB 2.0 | 1 × USB | 1 × USB |
| Wi-Fi / Bluetooth | Optional WF40/WF50 Wi-Fi and BT40/BT41/BT52 Bluetooth dongles | Built-in | Built-in |
| Expansion Modules | EXP43 (up to 3 modules, 180+ programmable keys) | Limited expansion support | Not standard |
| Firmware Protection | Dual firmware images | Cisco EDOS-managed | Poly Lens cloud management |
| Platform Support | 3CX, BroadSoft, Genesys, Metaswitch, Asterisk | Multi-platform SIP firmware | Broad SIP support |
| Price Tier | Premium | Premium | Premium |
Product Overview
🖥️ 7-Inch Touchscreen Designed for Faster Navigation
The Yealink SIP T48U features a large 7-inch capacitive touchscreen with an 800 × 480 resolution, providing an intuitive user experience similar to a modern smartphone. The responsive interface allows users to navigate menus quickly, making everyday communication more efficient. Searching contacts, transferring calls, viewing call history, and managing multiple lines can all be completed with just a few taps. The large colour display improves visibility, helping busy professionals work faster while reducing the time spent navigating menus.📞 Manage Up to 16 SIP Accounts with Ease
Built for demanding business environments, the T48U supports up to 16 SIP accounts, allowing multiple phone numbers, departments, or extensions to be managed from a single device. Whether used by receptionists, executives, administrators, or customer service teams, the phone makes handling high call volumes simple while reducing the need for multiple desk phones.🔊 Crystal-Clear HD Audio for Professional Conversations
Powered by Yealink Optima HD Voice, the T48U delivers rich, natural voice quality for both handset and hands-free conversations. Advanced audio technologies ensure every conversation remains clear and comfortable throughout the working day. With Acoustic Shield and Smart Noise Filtering, unwanted background sounds are significantly reduced, making the phone ideal for open offices, reception areas, and busy workplaces where clear communication is essential.🔌 Dual USB Ports for Greater Flexibility
The T48U includes two USB 2.0 ports, giving users greater flexibility than many traditional business desk phones. Multiple accessories can be connected simultaneously without sacrificing functionality. Connect a compatible USB headset while using optional Bluetooth or Wi-Fi adapters, attach expansion modules, or enable USB call recording to meet your organisation’s communication requirements.🔒 Enterprise Security You Can Trust
Business communication requires enterprise-grade protection. The T48U incorporates a comprehensive security framework, including TLS 1.3, Secure Boot, AES-256 encrypted configuration files, VPN support, and dual firmware images that help protect sensitive business communications while ensuring reliable operation. These security technologies make the T48U an excellent choice for organisations that prioritise secure voice communications, simplified device management, and dependable firmware recovery.📈 Built to Grow with Your Business
As your organisation expands, the T48U grows with it. The phone supports up to three Yealink EXP43 Expansion Modules, increasing capacity to more than 180 programmable DSS keys for rapid access to contacts, speed dials, BLF monitoring, and call transfers. This scalability makes the T48U an excellent solution for reception desks, operator consoles, executive assistants, and businesses that manage a high volume of incoming calls.⚡ Simple Deployment with Power over Ethernet (PoE)
Supporting IEEE 802.3af Power over Ethernet (PoE), the T48U receives both power and network connectivity through a single Ethernet cable. This reduces cable clutter, eliminates the need for separate power adapters in most installations, and simplifies office-wide deployments. For IT teams, PoE enables faster installation, cleaner desk setups, and easier management across corporate offices, call centres, and enterprise environments.Technical Specifications
| Parameter | Description |
|---|---|
| Display | 7-inch 800 × 480 capacitive touchscreen, 24-bit colour display with backlight. |
| SIP Accounts | Supports up to 16 VoIP (SIP) accounts. |
| Handset | Hall switch technology for quieter handset pickup and hang-up, Hearing Aid Compatible (HAC). |
| Audio – Wideband Codec | AMR-WB (optional), G.722. |
| Audio – Narrowband Codec | AMR-NB (optional), G.711μ/A, G.723.1, G.729A/B/AB, G.726, iLBC. |
| Audio Processing | Full-duplex hands-free speakerphone with Acoustic Echo Cancellation (AEC), Voice Activity Detection (VAD), Comfort Noise Generation (CNG), Packet Loss Concealment (PLC), Adaptive Jitter Buffer (AJB), and Automatic Gain Control (AGC). |
| Audio Features | Yealink Optima HD Voice, Acoustic Shield, Smart Noise Filtering. |
| Feature Keys |
|
| Networking | Dual-port Gigabit Ethernet with IEEE 802.3af Class 3 Power over Ethernet (PoE). |
| USB Ports |
|
| Wi-Fi | Supports optional WF40 or WF50 USB Wi-Fi dongle (built-in Wi-Fi not available). |
| Bluetooth | Supports optional BT40, BT41, or BT52 USB Bluetooth dongles for compatible Yealink Bluetooth headsets (BH71, BH71 Workstation, BH71 Workstation Pro, BH72, BH76, UH38) and mobile phone pairing. |
| DECT Headset Support | Compatible with Yealink WH62 Portable and WH63 Portable DECT wireless headsets. |
| Wired Headset Support |
|
| Other Ports |
|
| Expansion | Supports up to 3 × Yealink EXP43 colour expansion modules, providing more than 180 additional programmable DSS keys. |
| Directory |
|
| Call Features |
|
| Firmware | Dual firmware images with unified T4U Auto-P templates and firmware compatibility across the T4U series. |
| Security |
|
| Provisioning |
|
| UC Platform Compatibility | Compatible with 3CX, BroadSoft, BroadWorks, Genesys, Metaswitch, Asterisk, and other SIP-based Unified Communications platforms. |
| Power | Power over Ethernet (IEEE 802.3af Class 3) or optional AC power adapter (100–240V AC input, DC 5V/2A output). |
| Power Consumption |
|
| USB Output Current | 5V / 1A. |
| Colour | Classic Grey. |
| Dimensions (W × D × H) | 266 × 226 × 185 × 54 mm. |
| Operating Environment |
|
| Compliance | CE, FCC, RoHS, REACH, and ISO 9001 compliant. |
| Package Contents |
|
The T48U competes in the premium executive-phone tier, a different bracket than the mid-range Yealink T73U. Here’s how it stacks up against two well-known touchscreen alternatives.
Yealink T48U vs Cisco IP Phone 8865 vs Poly CCX 600
| Feature | Yealink T48U | Cisco IP Phone 8865 | Poly CCX 600 |
|---|---|---|---|
| Display | 7″ touchscreen (800 × 480) | 5″ touchscreen (800 × 480) | 5″ touchscreen (portrait) |
| SIP Lines | Up to 16 | Multiple (varies by configuration) | Multiple (varies by configuration) |
| USB Ports | 2 × USB 2.0 | 1 × USB | 1 × USB |
| Wi-Fi / Bluetooth | Optional WF40/WF50 Wi-Fi and BT40/BT41/BT52 Bluetooth dongles | Built-in | Built-in |
| Expansion Modules | EXP43 (up to 3 modules, 180+ programmable keys) | Limited expansion support | Not standard |
| Firmware Protection | Dual firmware images | Cisco EDOS-managed | Poly Lens cloud management |
| Platform Support | 3CX, BroadSoft, Genesys, Metaswitch, Asterisk | Multi-platform SIP firmware | Broad SIP support |
| Price Tier | Premium | Premium | Premium |
Pros & Cons
Pros
- A flagship device, a status signal on an executive desk.
- Excellent HD voice with Acoustic Shield
- Removes the “which accessory do I unplug” problem.
- Standardizes your senior team on one phone.
- Built to survive a failed update, not just a power cut.
- Enterprise-level security and easy deployment.
Cons
- Wi-Fi and Bluetooth require optional USB adapters
- Premium features may be unnecessary for basic office users.
- Power adapter sold separately when PoE is unavailable
Best For
The Yealink SIP-T48U is designed for professionals who depend on reliable business communication throughout the working day.
- Executives and directors who want a premium device that matches their role.
- Receptionists and switchboard operators managing constant call transfers.
- Call center managers needing headset and recording running simultaneously.
- Power users making 50+ calls a day who rely on visual speed dials.
- IT teams standardizing senior staff on Yealink’s T4U ecosystem.
- Businesses on 3CX, BroadSoft, or similar platforms wanting a flagship-tier phone
Executive Directors
Receptionists
Customer Service Teams
Call center managers
T48U Vs Yealink SIP Phone Comparison
| Feature | Yealink T48U | Yealink T73U | Yealink T57W |
|---|---|---|---|
| Display | 7″ Touchscreen | 2.8″ Colour Display | 7″ Touchscreen |
| SIP Accounts | 16 | 12 | 16 |
| USB Ports | Dual | Single | Dual |
| Built-in Wi-Fi | Optional | Optional | Yes |
| Best For | Executives & Reception | Everyday Office Users | Premium Executives |
Benefits of Using the Yealink SIP-T48U
The Yealink T48U is a productivity tool that helps professionals communicate with greater speed and confidence.
- Faster call handling: Visual DSS keys mean less searching, more talking.
- Its touchscreen interface reduces the time spent navigating menus, allowing users to access with just a few taps.
- Fewer dropped conversations: Acoustic Shield keeps voices clear over a busy office.
- Lower risk: Dual firmware images mean a bad update won’t take the phone offline mid-quarter.
- Simpler IT footprint: Unified T4U firmware means one update process, not three.
- Room to grow: EXP43 modules add up to 180 more programmable keys as the role expands.
- Stronger compliance posture: TLS 1.3, SRTP, and VPN support meet regulated-industry expectations.
Whether you’re managing a busy reception, leading a department, or coordinating client communication, the Yealink SIP-T48U delivers the performance, flexibility, and reliability expected from a premium business IP phone.
Who Is This NOT For?
The T48U is a premium executive IP phone, so it may not be the right choice for every business.
It may not be suitable if:
- You only need a basic desk phone for occasional calls.
- You’re deploying phones for a large team with a limited budget.
- Your users don’t require a touchscreen interface.
- You only need 2-4 SIP accounts.
For everyday office users, models such as the Yealink SIP-T73U may provide a more cost-effective solution while still offering excellent business communication features.
Why Choose the Yealink SIP-T48U?
Not every employee needs a premium business phone, but for professionals who spend most of their day communicating, the right device can significantly improve efficiency.
The Yealink SIP-T48U stands out because it combines an intuitive touchscreen experience with enterprise-level functionality. Instead of navigating through multiple menus or relying on external devices, users can manage calls, directories, conferencing, and contacts from a single interface.
Businesses also benefit from enterprise security, flexible deployment, expansion support, and compatibility with leading SIP platforms such as 3CX, BroadWorks, and Asterisk-based PBX systems, making it a reliable long-term investment
Why Buy from Zeal Global?
Looking for a premium Yealink IP phone that delivers exceptional call quality, intuitive touchscreen navigation, and enterprise-grade reliability?
Zeal Global Trading FZE is a trusted Yealink distributor Dubai, helping businesses choose the right communication solutions for their workplace.
Upgrade Your Business Communication with the Yealink SIP-T48U from Zeal Global.
Book A Demo
FAQ
Frequently Asked Questions
Can I use a wireless headset with the Yealink SIP T48U?
Yes. The T48U supports DECT headsets (Yealink WH62/WH63 Portable) and Bluetooth headsets via the BT40/BT41/BT52 dongle, alongside standard wired USB headsets.
How many lines and keys can the Yealink SIP-T48U handle?
29 built-in DSS keys, expandable with up to 3 EXP43 modules for up to 180 additional programmable keys, well over 200 total positions for high-volume switchboard use.
Where can I buy the Yealink SIP-T48U in Dubai?
Zeal Global Trading FZE is an authorized Yealink distributor Dubai, supplying genuine T48U units with full manufacturer warranty across the UAE. Contact us on WhatsApp at +971 56 374 7479 or email info@zealglobaltrd.com.
Does the Yealink T48U have built-in Wi-Fi or Bluetooth?
No. Wi-Fi requires an optional WF40 or WF50 dongle; Bluetooth requires an optional BT40, BT41, or BT52 dongle. Both connect via the phone’s USB ports and are sold separately.
What is the default admin password for SIP T48u?
The default administrator login for a factory-new Yealink SIP-T48U are
"admin" for username & password
"admin" for username & password
Can the SIP T48U phone record calls?
Yes. USB call recording is supported when used with a compatible USB storage device and supported PBX configuration.
