Yealink SIP-T73U is an advanced 12-line IP SIP phone with a 2.8-inch color display and two Gigabit Ethernet ports with PoE support, ideal for medium offices

Yealink T7 Series SIP-T73U is a SIP desk phone with 12 SIP accounts, 2.8-inch color LCD display (320×240 pixels, backlit), HD audio support (Opus, G.722, AMR-WB/nuclear), full echo cancellation, Acoustic Shield, Smart Noise Filtering, HAC handset, and 5-way conferencing with Group listening. Includes two Gigabit Ethernet ports (LAN/WAN, PoE 802.3af Class 2), USB-A 2.0 (500mA, USB headset, EXP55 up to 3 models), RJ9 for headset and EHS, IPv4/IPv6 support, SIP RFC3261, NAT/STUN, QoS, TLS 1.3, SRTP, HTTPS/AES256, OpenVPN, IEEE802.1X, WPA2/WPA3, Secure Boot, LLDP/CDP/DHCP VLAN.
Supports BLF/BLA, Anonymous call, MWI, Voice messages, Call park/pickup, Intercom, Multicast, Music on hold, Call recording, Mobile office, Chief assistant, XML/LDAP phonebook (1000 entries), Call history, Ring tone customization, Auto-P/YDMP provisioning, CP900/CP700/UH38 headsets integration, ideal for Yeastar/3CX/Asterisk (209 x 167.5 x 214.8 x 53.4 mm, 1.30-1.48W PSU consumption, -10 to +45°C).
The Yealink SIP-T73U offers the same advanced performance and high specifications as Yealink’s top-of-the-line desk phone, but in a design optimized for organizations with an integrated wired infrastructure and no need for built-in Wi-Fi and Bluetooth. This makes it the smart, economical choice that offers all the advanced connectivity at a better value for money.
The phone features a large 4-inch 480 x 272 pixel color LCD display that shows call and contact information in excellent clarity, with support for up to 16 SIP accounts that enables the management of a large number of lines and users from a single device. This makes it ideal for executives, department managers, receptionists, sales and customer service teams who deal with high call volume on a daily basis.
The phone includes a built-in USB port that enables the connection of wired USB headsets, storage and other accessories, providing flexibility to expand functionality as needed. Yealink Acoustic Shield with Opus codec support ensures exceptional call quality even in noisy office environments, as advanced noise isolation technology filters out ambient sounds and focuses on the speaker’s voice with crystal clarity.
The phone includes 12 programmable line buttons with expansion via additional button modules, and supports dual Gigabit Ethernet ports for stable and fast wired connectivity with pass-through capability. It supports centralized remote management protocols including Auto Provisioning, TR-069, and Yealink Device Management Platform to efficiently deploy and manage large fleets.
Why IT managers and procurement officers choose Yealink SIP-T73U
Delivers the same advanced performance, large screen, and support for 16 SIP accounts at a better value for money than the wireless version
Delivers stable and reliable wired connectivity via dual Gigabit Ethernet ports
Includes a built-in USB port for connecting external speakers and accessories
Delivers exceptional sound quality with Acoustic Shield’s advanced noise isolation technology
Supports expansion via additional button modules for advanced needs
Ideal for organizations that have an integrated wired infrastructure and prefer stable wired connectivity
Compatible with leading unified communications platforms, cloud and on-premises PBX systems
Main advantages
Large 4-inch color LCD display (480×272) – Displays call information, contacts and call history in excellent clarity with an intuitive user interface that boosts productivity
Support for up to 16 SIP accounts – Enables management of a large number of lines and users from a single device, ideal for executives, sales teams and receptionists
Dual Gigabit Ethernet ports – Stable and fast wired connection with the ability to pass the connection to another computer or device over the same cable
Built-in USB port – Connects wired USB headphones, external storage and accessories to expand the phone’s functionality as needed
Acoustic Shield Noise Isolation – Advanced acoustic technology that filters out ambient sounds and ensures clear calls even in noisy office environments
12 programmable line buttons with expandability – quick access to the most commonly used fonts and functions with support for additional button modules for advanced requirements
Advanced centralized management and deployment – supports Auto Provisioning, TR-069 and Yealink Device Management platform to efficiently deploy and manage large fleets