Yealink T48U Gigabit IP Phone (SIP-T48U) | New
SKU: SIP-T48U-N
This Phone Supports Webex Calling
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Overview of Yealink T48U Gigabit IP Phone (SIP-T48U) | New
The Yealink T48U Gigabit IP Phone (SIP-T48U) is a high-end business communication device with advanced features and an easy-to-use UI, designed to boost productivity in modern office situations. The Yealink T48U is a cutting-edge IP phone with superior audio quality, a huge touch screen display, and robust communication capabilities. It's great for CEOs, managers, and power users who need a feature-packed, efficient communication tool. The T48U interacts smoothly with a variety of corporate contexts and offers a wide range of productivity-enhancing features. The T48U is a good solution for businesses looking for a high-performance, feature-rich IP phone that combines advanced capabilities with simplicity of operation. Its huge touch screen, excellent voice quality, and wide feature set make it a great communication tool for high-volume commercial contexts.
Key Features of Yealink T48U Gigabit IP Phone
• 7-inch Color Touch Screen with large, responsive 800x480-pixel display for easy navigation and operation.
• Optima HD Voice technology delivers crystal-clear audio quality for natural, lifelike conversations.
• 16 SIP accounts supports up to 16 VoIP accounts for flexible line management.
• Dual-port gigabit ethernet ensures high-speed network connectivity and PC pass-through.
• Built-in Bluetooth and Wi-Fi supports Bluetooth headsets and Wi-Fi connectivity (with WF40/WF50 USB dongles).
• USB ports with two USB ports for call recording, wireless headsets, and expansion modules.
• Acoustic shield technology effectively eliminates background noise for distraction-free calls.
• Opus Codec support ensures excellent sound quality under varying network conditions.
• 29 One-Touch DSS keys features customizable keys for speed dial, BLF, and other frequently used functions.
• Power over Ethernet (PoE) simplifies installation and reduces cable clutter.
• Expansion module support compatible with up to three color-screen expansion modules.
• Advanced call handling features like call forward, call transfer, and 5-way conferencing.
• Unified firmware with consistent user interface across Yealink's T4U series for easy management.
• Secure communication supports TLS and SRTP encryption for enhanced security.
• Adjustable stand with two-angle stand for optimal viewing and reduced desk footprint.
Specifications
Specifications for Yealink T48U Gigabit IP Phone (SIP-T48U) | New
| Manufacturer | Yealink |
| Manufacturer Part Number | SIP-T48U |
| Product Name | Yealink T48U Gigabit IP Phone |
| Product Type | IP Phone |
Body Color | Classic gray |
Call Services | Call Hold, Call Mute, Call Forwarding, Call Waiting, Call Transfer, Voice Mail, Call park/pickup, Caller ID |
Caller ID Type | Caller ID |
Dialer Location | Base |
Conference Call Capability | 10-way |
Speakerphone | Yes |
Volume Control | Yes |
Indicators | Busy lamp field (BLF), call waiting indicator, message waiting indicator |
Additional Functions | Smart Noise Filtering, Acoustic Shield Technology, call recording, Do Not Disturb (DND), speed dial memory, hotline, group call pickup, emergency call, redial, auto answer, blacklist, Bridged Line Appearance (BLA), anonymous call, anonymous call rejection, call return, mute |
Main Features | Multiple VoIP protocol support, integrated Ethernet switch |
VoIP | Yes |
VoIP Protocols | SIP, RTCP-XR, VQ-RTCPXR, SIP v2, SRTP |
Voice Codecs | Opus, G.722, G.729ab, G.726, G.723.1, iLBC, G.711μ, G.711a |
Quality of Service | IEEE 802.1Q (VLAN), IEEE 802.1p, Layer 3 TOS |
IP Address Assignment | DHCP, static |
Security | IEEE 802.1X, TLS, AES, SSL |
Power Over Ethernet (PoE) Support | Yes |
Network Protocols | IP, RTCP-XR, VQ-RTCPXR, FTP, TFTP, HTTP, HTTPS, TR-069, SNTP, UDP, TCP, DNS SRV, IPv6, Link Layer Discovery Protocol (LLDP), Cisco Discovery Protocol (CDP), DHCP, VLAN, SRTP |
Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX/1000Base-T |
Compatible Software | Yealink Redirection and Provisioning Service (RPS) |
Voice Features | HD Voice, acoustic echo cancellation (AEC), voice activity detection (VAD), comfort noise generation (CNG), packet loss concealment (PLC), adaptive jitter buffer (AJB), automatic gain control (AGC), Yealink Optima HD voice technology |
Network Features | Up to 16 SIP accounts, 3 DTMF modes, Lightweight Directory Access Protocol (LDAP), Network Address Translation (NAT) Traversal, STUN, ICE |
Phone Directory Capacity | 1000 names & numbers |
Type | LCD display - color |
Display Location | Base |
Diagonal Size | 7" |
Display Resolution | 800 x 480 pixels |
Color Depth | 24-bit (16.7 million colors) |
Backlit | Yes |
Display Languages | Multilingual |
Features | Multi-touch |
Connections | Headset jack / RJ-9 ¦ 2 x USB ¦ Handset jack / RJ-9 |
Hearing Aid Compatible | Yes |
Placing / Mounting | Wall-mountable, table-top |
Cables Included | Ethernet cable - 6.6 ft |
Included Accessories | Stand |
Power Consumption | 1.8-3.8 W (PSU), 2.3-4.7 W (PoE) |
Width | 10.5 in |
Depth | 8.9 in |
Height | 7.3 in |
User Guides
Frequently Asked Questions
Yealink T48U Gigabit IP Phone (SIP-T48U)
Frequently Asked Questions (FAQ's)
How do I connect the Yealink T48U to my network? Connect the Ethernet wire to the phone's LAN port, then to your network switch or router.
Does the T48U support Power over Ethernet (PoE)? Yes, the T48U supports PoE, which eliminates the need for a separate power adapter when linked to a PoE switch.
How can I add contacts to the T48U phonebook? To add new contacts, navigate to Menu > Directory > Local Directory and then pick "Add".
Is the T48U compatible with Bluetooth headsets? Yes, you can use the optional Yealink BT41 Bluetooth dongle to connect Bluetooth headsets.
Can I use Wi-Fi with the T48U? Yes, the T48U can connect to Wi-Fi networks via the optional Yealink WF50 Wi-Fi dongle.
How do I set up call forwarding on the T48U? Navigate to Menu > Features > Call Forward and configure the required forwarding settings.
Does the T48U have a touchscreen? Yes, the T48U includes a 7-inch color touchscreen display for simple navigation.
Can I use the T48U with Microsoft Teams? The T48U is primarily intended for SIP-based VoIP services and is not directly compatible with Microsoft Teams.
How do I check the voicemail on the T48U? To access and manage your messages, use the "Message" button or dial your voicemail number.
Can I connect a headset to the T48U? Yes, the T48U offers both a USB and an RJ9 headset jack, allowing you to connect your headphones via wire or USB.
How do I change the ringtone on the T48U? Navigate to Menu > Settings > Basic Settings > Sound > Ring Tones, and select your chosen tone.
Is the T48U suitable for video calls? No, the T48U is intended for high-quality audio calls and does not handle video conversations.
Can I adjust the screen brightness on the T48U? Yes, screen brightness can be changed via Menu > Settings > Basic Settings > Display.
How many SIP accounts does the T48U support? The T48U can support up to 16 SIP accounts, making it ideal for multi-line use.
Does the T48U support Hot Desking? Yes, the T48U supports Hot Desking, which enables several users to log in and use the device.
How can I perform a factory reset on the T48U? Navigate to Menu > Settings > Advanced > Reset to Factory. Enter the admin password if asked.
What is the difference between the T48U and the T48S model? The T48U has two USB ports with updated firmware capability, but the T48S only has one USB port.
How do I transfer a call on the T48U? While on the phone, press "Transfer," enter the destination number, and then press "Transfer" again to finish.
Can I use the T48U in a call center environment? Yes, the T48U is ideal for high-call scenarios because it supports multiple lines and headsets.
How do I access the web interface for the T48U? Enter the phone's IP address into a web browser, then log in with the default admin credentials for advanced configuration.