Yealink SIP-T73U Business IP Phone
PRODUCT DESCRIPTION
Yealink SIP-T73U 2.8" Colour Screen Gigabit Business IP Phone with USB (SIP-T73U) - 1 Year Local Warranty
Yealink T73U — Multifunctional SIP Phone, Excellent Voice Communication
The Yealink SIP-T73U is an all-in-one business phone from Yealink's new T7 series, with a slimmer body, a 2.8-inch 320 x 240 colour display and touchable buttons. Up to 12 SIP accounts and 8 LED line keys (up to 40 DSS keys over 5 pages) make it a smart choice for everyday desks in Singapore offices.
Clean Sound, Clear Calls
Yealink HD voice on both handset and speaker, a full-duplex speakerphone with echo cancellation and a hearing aid compatible (HAC) handset deliver natural conversations, with 5-way conferencing built in.
Gigabit, USB and Optional Wireless
Dual-port Gigabit Ethernet with PoE and a USB 2.0 port support USB headsets, recording and up to three EXP55 colour-screen expansion modules. Wi-Fi is available via the Yealink WF50 adapter and Bluetooth headsets via the BT51.
Secure and Easy to Deploy
A TEE hardware encryption solution, TLS 1.3 and AES-256 configuration file encryption protect the phone, while auto-provisioning and Yealink YDMP/YMCS simplify mass deployment.
Yealink SIP-T73U Datasheet — Technical Specifications
| Model | Yealink SIP-T73U |
| Part Number / SKU | SIP-T73U |
| Product Type | 12-account Gigabit business IP desk phone with USB |
| Warranty | 1 Year Local Warranty (Singapore) |
| Display | 2.8" 320 x 240 colour screen with backlight; wallpaper and screen saver |
| VoIP Accounts | Up to 12 SIP accounts |
| Keys | 8 line keys with LED (up to 40 DSS keys, 5 pages) |
| Conferencing | 5-way conferencing |
| Audio | HD voice (HD handset, HD speaker), full-duplex hands-free speakerphone with AEC, HAC handset |
| Wideband Codecs | AMR-WB (optional), G.722 |
| Narrowband Codecs | AMR-NB (optional), PCMU (G.711μ), PCMA (G.711A), G.723.1, G.729, G.729A, G.729B, G.729AB, G.726, iLBC |
| Ethernet | Dual-port Gigabit Ethernet |
| PoE | IEEE 802.3af, Class 2 |
| Wi-Fi | Via Yealink WF50 (V1) adapter |
| Bluetooth | Yealink Bluetooth headsets via BT51 |
| USB | 1 x USB 2.0 (headsets, recording, expansion) |
| Expansion | Up to 3 x EXP55 colour-screen expansion modules cascaded |
| Security | TEE hardware encryption solution, TLS 1.3, AES-256 configuration file encryption |
| Management | Auto-provisioning via FTP/TFTP/HTTP/HTTPS; Yealink Device Management Platform (YDMP/YMCS) |
| Power | PoE: 1.368–1.832 W; optional adapter (AC 100–240 V in, DC 5 V/2 A out): 1.30–1.48 W |
| Dimensions (W x D x H x T) | 209.0 x 167.5 x 214.8 x 53.4 mm |
| Operating Environment | -10 to +45 °C, 5–90% humidity |
Compatibility & Software Support
The SIP-T73U is a standards-based SIP phone that registers up to 12 accounts on SIP-based IP-PBX platforms and SIP trunk services, including popular systems used by Singapore businesses such as 3CX, Yeastar and Asterisk-based PBXs. Optional accessories include the WF50 Wi-Fi adapter, BT51 Bluetooth adapter and EXP55 expansion module, and fleets are managed with auto-provisioning or Yealink YDMP/YMCS.
Package Contents & T7 Series Ordering Information
In the box: Yealink T73U IP phone, handset with handset cord, 2 m CAT5E Ethernet cable, stand, quick start guide. Power adapter and wall mount bracket optional (PoE supported).
| Yealink SIP-T73U | 2.8" colour screen, 12 SIP accounts, wired (this model) |
| Yealink SIP-T73W | 2.8" colour screen, built-in Wi-Fi 6 and Bluetooth 5.0 |
| Yealink SIP-T74U | 4.3" colour screen, 16 SIP accounts, wired |
| Yealink SIP-T74W | 4.3" colour screen, built-in Wi-Fi 6 and Bluetooth 5.0 |
| Yealink SIP-T77U | 7" touch screen, 16 SIP accounts, 84 DSS keys |
Datasheet & Downloads
Frequently Asked Questions — Yealink SIP-T73U
What is the difference between the T73U and the T73W?
Both have a 2.8-inch colour screen and up to 12 SIP accounts. The T73W has Wi-Fi 6 and Bluetooth 5.0 built in; on the T73U, Wi-Fi and Bluetooth are added with the optional WF50 and BT51 adapters.
Does the SIP-T73U have Gigabit Ethernet?
Yes, dual-port Gigabit Ethernet.
Does the SIP-T73U support PoE?
Yes, IEEE 802.3af Class 2. A 5 V/2 A power adapter is optional.
Can I add expansion modules?
Yes, up to three EXP55 colour-screen expansion modules.
Does the Yealink SIP-T73U come with local warranty in Singapore?
Yes. Every SIP-T73U sold by SourceIT comes with 1 year local Singapore warranty and a GST invoice.
Product Video
Official Yealink T73 video (yealink.com).
