Description
Yealink SIP-T77U 7-Inch Touchscreen Flagship SIP Phone Dubai
Yealink SIP-T77U — The Touchscreen Flagship for Dubai Power Users
The Yealink SIP-T77U is the flagship touchscreen model in the current T7 desk phone range. It is built for the buyer who has outgrown a standard button phone: executives who want a 7-inch screen, reception desks that need fast visual call handling, assistants managing several lines, and supervisors who need a large DSS key layout without moving to a separate operator console. For Dubai offices replacing the older Yealink T48U, the T77U is the new SIP touchscreen upgrade path — 16 accounts, dual Gigabit Ethernet, dual USB, advanced security, AI Noise Cancellation, and support for the EXP55 colour expansion module family.
SIP or Microsoft Teams? Get the Platform Right Before You Order
The T77U is a SIP phone. It registers to SIP platforms such as 3CX, Yeastar P-Series, Grandstream UCM, Asterisk, FreePBX and hosted PBX providers. It is not a Microsoft Teams phone, and there is no Teams edition of the T77U body. That same-body Teams pattern belonged to older Yealink generations; the T7 series is SIP-only. For Teams Phone, Yealink uses the separate MP-series range. For Zoom Phone, use a Zoom-certified Yealink model verified at quote stage.
| Your Platform | Right Phone | What You Need |
|---|---|---|
| SIP PBX — 3CX, Yeastar, UCM, Asterisk, hosted PBX | Yealink SIP-T77U (this page) | SIP credentials from your phone system |
| Microsoft Teams Phone | Yealink MP-series Teams phone — ask David for the current certified model | Microsoft 365 tenant + Teams Phone licence per user |
| Zoom Phone | Zoom-certified Yealink range — ask David to verify certification status | Zoom Phone licence per user |
Tell David which platform you run when requesting a quote. A SIP phone in a Teams-only office cannot be fixed by field reflash, so we confirm the platform before dispatch.
PoE Truth — No Power Adapter in the Box
The Yealink SIP-T77U ships without a power adapter. It is designed to run from a PoE-capable network switch port. If your switch does not provide PoE, ask David to add the matching Yealink 5V/2A power supply to the quote. If the desk will run two or three EXP55 expansion modules, an external PSU is required regardless of PoE. Vector Digital Systems confirms this before delivery so the phone does not arrive without the power method your site needs.
Gigabit Passthrough for Dubai’s 1Gbps Desks
The T77U has dual Gigabit Ethernet ports. Connect the LAN port to your switch and the PC port to the user’s laptop or desktop, and the computer keeps full 1Gbps passthrough. This matters in Dubai offices where cloud storage, video calls and ERP systems sit behind the phone. Replacing an older 100Mbps phone is not just a telephony refresh — it is also an instant desk network upgrade.
Where the T77U Sits in the T7 Range
The T77U is the flagship touch model above the T74U and T74W. Choose the T74U for a wired executive desk with a 4.3-inch screen, the T74W when you need built-in Wi-Fi 6 and Bluetooth 5.0, and the T77U when the user wants the largest screen, 84 DSS keys and a touchscreen workflow. For operator desks, the T77U can be expanded with up to three EXP55 colour modules.
| Feature | T74W | SIP-T77U ★ | T77U + EXP55 Console |
|---|---|---|---|
| Display | 4.3″ 480×272 colour | 7″ 800×480 touch | 7″ touch + EXP55 colour screens |
| SIP Accounts | 16 | 16 | 16 |
| Programmable Keys | 50 | 84 DSS keys | Up to 318 keys total |
| GigE | Dual GigE | Dual GigE | Dual GigE |
| Wi-Fi / Bluetooth | Wi-Fi 6 + BT 5.0 built in | Via WF50 / BT51 accessories | Via WF50 / BT51 accessories |
| Conference | 10-way | 10-way | 10-way |
| Expansion | Up to 3× EXP55 | Up to 3× EXP55 | 1–3× EXP55 staged and mapped |
| Replaces | T53W / T54W tier | T48U | T48U operator builds |
| Price Tier | Mid-executive wireless | Flagship touch | Console / supervisor setup |
| Choose if… | You need built-in wireless more than a touchscreen | You want the flagship T7 desk phone with 7-inch touch control | You are building a reception, operator or supervisor BLF wall |
Dubai Use Cases for the Yealink SIP-T77U
Executive offices in DIFC, Business Bay and DMCC. The T77U looks and behaves like a flagship desk phone. The large touchscreen gives senior users quick access to calls, directories, voicemail and soft keys without the cramped feel of a smaller display. For banks, law firms and corporate HQs, the T7 security stack and hardware-level Trusted Execution Environment also make the phone easier to justify in endpoint-security reviews.
T48U replacement projects. Many UAE offices still have Yealink T48U touchscreen phones on executive desks and reception counters. The T77U is the clean T7-era replacement: same touchscreen buyer expectation, modern hardware, dual Gigabit ports, USB-A and USB-C, AI Noise Cancellation, and current accessory support. Vector Digital Systems stages fleet swaps desk by desk so users keep familiar call flows while IT moves to current hardware.
Reception and operator desks. A hotel front desk in Deira, a clinic reception in Jumeirah, or a logistics control desk in Jebel Ali may need more than a normal desk phone. The T77U starts with 84 DSS keys and can scale with EXP55 modules for labelled BLF and speed-dial layouts. David can map extensions, queues, branches and VIP numbers before dispatch.
Call-centre supervisors and assistant desks. The T77U suits users who monitor many people but still want a premium primary handset. Add one, two or three EXP55 modules for a colour BLF wall. Two or three modules require the external PSU, which Vector Digital Systems includes in the quote when the console build needs it.
Full Technical Specifications
| Specification | Yealink SIP-T77U |
|---|---|
| Product Type | Flagship SIP touchscreen IP phone |
| Display | 7-inch 800×480 capacitive adjustable colour touchscreen with backlight |
| SIP / VoIP Accounts | 16 VoIP accounts |
| DSS / Programmable Keys | 84 one-touch DSS keys |
| Feature Keys | Hold, transfer, message, headset, mute, redial, speakerphone, volume keys |
| Local Conferencing | 10-way conferencing |
| Network Ports | Dual-port Gigabit Ethernet |
| USB Ports | 2× USB 2.0 ports: USB-A and USB-C |
| Wi-Fi | Optional via Yealink WF50 USB Wi-Fi dongle — not built in |
| Bluetooth | Optional via Yealink BT51 Bluetooth dongle — not built in |
| Audio | HD handset, HD speaker, Acoustic Shield, Smart Noise Filtering, AI Noise Cancellation, 3W speaker |
| Headset Support | RJ9 headset, USB headset, Bluetooth headset via BT51, DECT headset via EHS40 where required |
| Expansion Module | Supports EXP55 colour-screen expansion modules, up to 3 cascaded |
| Power | PoE IEEE 802.3af Class 3; external Yealink 5V/2A PSU optional |
| Security | Trusted Execution Environment, secure boot, TLS 1.3, SRTP, AES256 configuration encryption, 802.1X, VPN support |
| User Experience | Touchscreen UI, caller ID with name/number/photo, wallpaper, screensaver, dark and light themes, accessibility features |
| Provisioning | Auto-provision via FTP, TFTP, HTTP, HTTPS; PnP; TR-069; browser and phone configuration |
| Package Contents | T77U phone, handset, handset cord, Ethernet cable, stand, quick start guide. Power adapter is optional. |
| Compatibility | 3CX, Yeastar P-Series, Grandstream UCM, Asterisk, FreePBX, BroadSoft-style hosted PBX and RFC-compliant SIP servers |
| Replaces | Yealink SIP-T48U touchscreen SIP phone |
Compatible Accessories
| Accessory | Model | Purpose |
|---|---|---|
| Expansion Module | EXP55 | Colour-screen BLF and speed-dial expansion. 78 keys per module, up to 3 modules. External PSU required for 2–3 modules. |
| Wi-Fi Dongle | WF50 | Adds Wi-Fi via USB when Ethernet cabling is not available. T77U does not have built-in Wi-Fi. |
| Bluetooth Dongle | BT51 | Adds Bluetooth headset and mobile-contact functionality. T77U does not have built-in Bluetooth. |
| Wireless Headset Adapter | EHS40 | Remote answer and hang-up with compatible Yealink DECT wireless headsets. |
| Power Supply | Yealink 5V/2A PSU | Required when no PoE switch is available and for desks running 2–3 EXP55 modules. |
| Headsets | Yealink UH / WH / BH range | USB, DECT and Bluetooth headset options. David confirms exact headset pairing before quote. |
Staging Before Dispatch — What Vector Digital Systems Configures
Every Yealink SIP-T77U supplied by Vector Digital Systems is staged before dispatch from Dubai. We register the SIP account to your platform, load the provisioning template, apply the dial plan, configure BLF and speed-dial keys, test codec priority, verify a live test call, and label the unit for desk delivery. For reception and supervisor builds, we map the EXP55 keys before shipment and include the required PSU where the console build needs it. Your team receives a phone that is ready to plug in, not a sealed box that still needs configuration.
Export from Dubai
Vector Digital Systems exports Yealink T7-series phones from Dubai to telecom operators, system integrators, PABX installers, corporate IT teams and hotel groups. Common export routes include Oman, Saudi Arabia, Kuwait, Bahrain and Qatar across the GCC; Jordan and Egypt in the wider Arab market; Kenya and Tanzania in East Africa; and Pakistan and Sri Lanka for South Asian deployments. Shipments are quoted FOB Dubai with commercial invoice, packing list and certificate of origin on request. Ask David for project pricing on multi-unit T77U orders, with VAT and UAE delivery shown clearly for local purchases.
Get a same-day quote in AED — Yealink SIP-T77U Dubai
Tell David your quantity, SIP platform, PoE switch status, headset requirement and whether you need EXP55 modules. Vector Digital Systems quotes with VAT breakdown, delivery charges and staging included.
Frequently Asked Questions — Yealink SIP-T77U
Is the Yealink T77U the replacement for the T48U?
Yes — the SIP-T77U is the T7-series touchscreen successor for buyers replacing the older Yealink SIP-T48U. It keeps the premium touchscreen desk-phone role and adds current T7 hardware, dual Gigabit Ethernet, dual USB ports, 84 DSS keys, Trusted Execution Environment security and EXP55 expansion support.
Does the Yealink T77U work with Microsoft Teams?
The T77U is a SIP phone, not a Microsoft Teams phone. It works with SIP platforms such as 3CX, Yeastar, Grandstream UCM, Asterisk and hosted PBX services. Yealink Teams phones are a separate MP-series range, and there is no Teams edition of the T77U body. For Teams Phone deployments, ask David for the current Teams-certified Yealink MP model.
Does the Yealink T77U come with a power adapter, or do I need PoE?
The T77U does not include a power adapter. It normally runs from a PoE-capable switch port. If your switch does not provide PoE, Vector Digital Systems can add the matching Yealink 5V/2A power supply. Desks running two or three EXP55 expansion modules require the external PSU regardless of PoE.
Will the T77U work with our 3CX, Grandstream UCM, Yeastar P-Series or existing SIP PABX?
Yes — the SIP-T77U is designed for SIP phone systems and works with RFC-compliant platforms including 3CX, Yeastar P-Series, Grandstream UCM, Asterisk, FreePBX and hosted PBX providers. Vector Digital Systems stages the phone with your SIP credentials and provisioning template before dispatch.
Yealink T77U vs T74W — which one should I buy?
Choose the T77U when the user needs the 7-inch touchscreen, 84 DSS keys and flagship desk-phone experience. Choose the T74W when the desk needs built-in Wi-Fi 6 and Bluetooth 5.0 more than the large touchscreen. The T77U can add Wi-Fi and Bluetooth through USB accessories, while the T74W has them built in.
How many BLF keys can I get with the Yealink T77U and EXP55 modules?
The T77U has 84 DSS keys on the phone. Each EXP55 adds 78 keys, and up to three EXP55 modules can be cascaded, giving up to 318 programmable keys in total. This is ideal for reception desks, executive assistants and call-centre supervisors who need many labelled extensions visible at once.
Does the Yealink T77U support Wi-Fi and Bluetooth?
Yes, but through USB accessories rather than built-in radios. Use the Yealink WF50 dongle for Wi-Fi and the BT51 dongle for Bluetooth headset and mobile-contact features. If you want built-in Wi-Fi 6 and Bluetooth 5.0 in the T7 range, consider the T74W instead.
Who is the authorised Yealink supplier in Dubai?
Vector Digital Systems LLC has supplied and integrated Yealink solutions in Dubai since 2009. David handles Yealink product selection, project pricing, staging and local warranty support, so Dubai customers do not need to manage overseas returns or unsupported grey-market stock.
What is the best Yealink IP phone for an executive desk in Dubai?
For an executive desk that needs a premium screen and quick call handling, the SIP-T77U is the best Yealink T7 choice. It gives a 7-inch touch display, 16 SIP accounts, 84 DSS keys, dual Gigabit ports and advanced audio. For smaller executive desks, the T74U is better value; for built-in wireless, choose the T74W.
Does Vector Digital Systems export Yealink T77U phones from Dubai?
Yes — Vector Digital Systems exports Yealink T77U phones from Dubai to integrators, telecom operators and enterprise buyers in Oman, Saudi Arabia, Kuwait, Bahrain, Qatar, Jordan, Egypt, Kenya, Tanzania, Pakistan and Sri Lanka. Export quotes can include FOB Dubai terms, commercial invoice, packing list and certificate of origin on request.
Does Vector Digital Systems configure the T77U before delivery?
Yes — every T77U can be staged before dispatch with SIP registration, provisioning template, BLF and speed-dial keys, dial plan, codec priority and a live test call. For EXP55 console builds, Vector Digital Systems maps the keys and includes the required external power supply where needed.
