Yealink SIP-T73U Gigabit IP Phone with 2.8-Inch Color Display and 12 SIP Lines for Enterprise VoIP

Name: Yealink SIP-T73U Gigabit IP Phone with 2.8-Inch Color Display and 12 SIP Lines for Enterprise VoIP
Brand: Yealink
SKU: Custom-Yealink-SIP-T73U
Price: 128.0 USD
Availability: InStock

Delivery Time: 0-3 days

Product Highlights

• 12 SIP account registrations with dual gigabit Ethernet ports enable high-density line management for busy office environments

• 2.8-inch color LCD display with 320x240 resolution and dual theme support provides clear visual navigation and call information

• 40 programmable buttons across five pages plus expansion support for up to 3 EXP55 modules deliver 234 total DSS keys

• HD voice with Acoustic Shield and Smart Noise Filtering technologies ensure crystal-clear audio quality on calls

• TEE hardware encryption, TLS 1.3, and three-layer security architecture protect sensitive enterprise communications

• PoE IEEE 802.3af support and USB 2.0 port enable flexible deployment with headsets, recording, and wireless adapters

Overview
Specifications
FAQ
User Guides
Reviews

The Yealink SIP-T73U is an enterprise-grade IP phone designed to meet the demanding communication needs of modern businesses. Built on Linux 6.1 with TEE hardware encryption, it delivers professional-grade performance with robust security features including TLS 1.3, SRTP media protection, and a three-layer security architecture. The phone's Hall switch technology provides a quieter office environment, while its redesigned slim profile matches contemporary workplace aesthetics.

Supporting up to 12 SIP accounts with dual gigabit Ethernet connectivity, the T73U handles high call volumes without network bottlenecks. The 2.8-inch color display presents call information clearly, and the extensive programmability—40 onboard keys expandable to 234 with EXP55 modules—streamlines operations for receptionists, call center agents, and power users. HD voice codec support, combined with Acoustic Shield and Smart Noise Filtering, ensures exceptional audio clarity for every conversation.

Wide compatibility with leading platforms like 3CX, Broadsoft, and Broadworks, plus unified firmware across the T7 series, simplifies IT management and deployment at scale. PoE support reduces cabling complexity, while the USB 2.0 port enables connection of headsets, wireless adapters, or storage devices for call recording.

Best For

The SIP-T73U excels in enterprise environments requiring high-capacity line management, programmable call handling, and secure communications:

- Corporate reception desks where operators manage multiple lines and need instant access to directory contacts and transfer functions through programmable DSS keys

- Call center supervisor stations requiring monitoring of agent lines, quick conference setup, and expansion modules for extensive presence visualization

- Executive offices demanding secure encrypted communications, professional audio quality, and integration with USB headsets for all-day comfort

- Financial and healthcare institutions where TLS 1.3 encryption, secure boot, and configurable security policies meet compliance requirements

- Professional services firms deploying standardized VoIP systems across multiple offices using 3CX, Broadsoft, or similar platforms

Key Features

- 12 SIP account registrations support high-density line assignments for receptionists, shared lines, or departmental routing

- Dual gigabit Ethernet ports with PoE IEEE 802.3af eliminate network bottlenecks and simplify installation without separate power adapters

- 40 programmable buttons across five pages, expandable to 234 total keys with three EXP55 modules cascaded via USB

- HD voice codecs (G.722, AMR-WB) with 3W speaker, Acoustic Shield, and Smart Noise Filtering deliver crystal-clear audio

- 2.8-inch color LCD (320x240 pixels) with backlight and dual theme support provides clear visual feedback for calls and contacts

- TEE hardware encryption, TLS 1.3, SRTP, and three-layer security architecture (core integrity, network defense, transmission security) protect enterprise communications

- USB 2.0 port supports headsets, Wi-Fi/Bluetooth/DECT adapters, local call recording to USB storage, and EXP55 expansion modules

- Dual system backup function allows rollback if firmware upgrade fails, ensuring enterprise-grade reliability

Quick Specs

Display	2.8-inch color LCD, 320x240 pixels, backlight, dual theme support
SIP Accounts	12 registrations
Network	Dual gigabit Ethernet (RJ-45), IPv4/IPv6
Keys	8 line keys with LED, 40 programmable buttons (5 pages), 4 soft keys, expandable to 234 with EXP55 modules
Audio Codecs	HD: G.722, AMR-WB; Narrowband: G.711µ/A, G.729, G.723.1, G.726, iLBC, AMR-NB
Audio Features	HD handset/speaker, 3W speaker, HAC handset, Acoustic Shield, Smart Noise Filtering, full-duplex speakerphone with AEC
Interfaces	2x RJ-45 gigabit, 2x RJ-9 (handset/headset), 1x USB 2.0, 1x DC 5V power
Power	PoE IEEE 802.3af (Class 2) or AC adapter 5V/2A; consumption 1.30-1.48W (PSU), 1.368-1.832W (PoE)
Security	TEE hardware encryption, TLS 1.3, SRTP, AES256 config encryption, secure boot, OpenVPN, IEEE 802.1X, WPA2/WPA3
Protocols	SIP v1/v2, SRTP, LLDP/CDP, QoS (802.1p/Q, DSCP), RTCP-XR, ICE, STUN
Compatibility	3CX, Broadsoft, Broadworks, and major SIP platforms
Expansion	Up to 3x EXP55 modules (78 keys each, 234 total)

General Specifications
Brand	Yealink
Model No.	SIP-T73U

Product Details
Color	Black, Gray
Power Source	AC-powered, DC-powered
Connection Type	Ethernet, USB
Connectivity Technology	Ethernet, USB, Wired
Display Color Mode	Color
PoE Standard	IEEE 802.3af
VoIP Protocol Support	SIP
Dialing Method	Push-button tone (DTMF)
Mounting Type	Tabletop

Regular price: $128.00
Sale price: $128.00
Unit price: per