Yealink T73U, T73W, T74U, T74W and T77U Compared in Australia

Quick Verdict

The model name gives you most of the answer. Choose between 12 and 16 lines first, decide whether you need built-in wireless second, then consider whether a 7-inch touchscreen will improve daily call handling.

The T73U and T73W are the 12-line models. The T74U and T74W move up to 16 lines, while the T77U combines 16 lines with the largest touchscreen in this group.

Within the T73 and T74 pairs, the suffix matters more than it first appears. A W model has built-in Wi-Fi and Bluetooth, while a U model needs compatible USB dongles for wireless connectivity. If the phone will use wired Ethernet and a USB or wired headset, paying for built-in wireless may add little value.

For a typical one to five seat business where each person handles ordinary calls, the T7 series is likely more phone than the role requires. Its strongest fit is a reception, executive, team-lead or high-volume call-handling desk that needs many line appearances, extension status indicators or a larger interface.

The Five T7 Models at a Glance

Model	Supported lines	Screen	Wireless connectivity	Practical fit
T73U	12	2.8-inch colour	Bluetooth and Wi-Fi require the BT41/WF50 dongles	Wired desk needing up to 12 lines
T73W	12	2.8-inch colour	Built-in Wi-Fi 6 and Bluetooth 5.0	12-line desk where wireless is genuinely useful
T74U	16	4.3-inch colour	Bluetooth and Wi-Fi require the BT41/WF50 dongles	Wired reception or power-user desk
T74W	16	4.3-inch colour	Built-in Wi-Fi 6 and Bluetooth 5.0	16-line desk needing wireless flexibility
T77U	16	7-inch touchscreen	Bluetooth and Wi-Fi require the BT41/WF50 dongles	Wired executive or reception desk prioritising a large touch interface

A supported line is an account or call identity the phone can manage, similar to having several inboxes available in one email application. It does not automatically mean the user can conduct that many calls at once, or that every line becomes a dedicated physical button.

These are SIP desk phones. SIP, or Session Initiation Protocol, is the sign-in method many business phone systems use to connect a handset, much like an email application signing into a mail server.

W Versus U: The Decision That Matters Most

The W suffix means wireless hardware is built into the phone. On the T73W and T74W, that covers Wi-Fi for the network connection and Bluetooth for compatible headsets or other supported accessories.

The U models take a modular approach. The T73U, T74U and T77U can use wired Ethernet as supplied, but wireless features require compatible USB accessories that are normally purchased separately. Confirm the exact Yealink dongle and available USB port with the reseller before ordering a fleet.

Built-in wireless is useful where an Ethernet cable cannot reach the desk, where desks are moved regularly, or where staff use compatible Bluetooth headsets. It also avoids having a small dongle occupy a USB port or become another accessory to track and replace.

A U model can still be the more sensible choice in a properly cabled office. Wired Ethernet usually provides a more predictable connection for a busy reception desk, and some organisations deliberately disable Wi-Fi or Bluetooth on fixed devices under their IT security policy.

Do not assume the U model will deliver the lower total cost. There is no verified Australian pricing for these five phones in the available NTKComms data, and adding separate Wi-Fi or Bluetooth accessories may change the comparison. Request an itemised quote in AUD, including GST, required dongles, power supplies and headset adapters.

T73, T74 or T77: Which Hardware Tier Fits?

T73U and T73W: The 12-Line Starting Point

The T73 pair is the logical entry to the range when 12 supported lines are enough. The choice between them is mostly about whether the desk needs built-in Wi-Fi and Bluetooth.

This tier can suit a manager, executive assistant or smaller reception position that monitors several extensions without needing the 16-line ceiling. BLF, or Busy Lamp Field, is the feature that shows whether another extension is free, ringing or on a call, like a small live status board for the team.

Count the extensions the user must see and control, not the total number of employees in the company. A 20-person business might need only six visible extension indicators at reception, while a smaller multi-site team could need more.

T74U and T74W: More Capacity Without a Larger Screen

The T74 pair increases the supported line count to 16 while retaining a 4.3-inch colour screen. The T74W product information from Yealink also confirms built-in Wi-Fi and Bluetooth for the W version.

This is the middle decision point for a busy receptionist, office manager or supervisor who needs more account and line capacity but still prefers conventional buttons around a standard-sized display. Choose the T74W when built-in wireless removes a real installation or headset problem, and the T74U when the desk will remain cabled.

More supported lines do not guarantee that your phone service will expose every desired function. Ask the service provider to confirm support for shared lines, call pickup, extension monitoring and any expansion module before buying.

T77U: The Large Touchscreen Option

The T77U keeps the 16-line capacity but moves to a 7-inch colour touchscreen. Yealink describes it as a 7-inch, 800 by 480-pixel touch display on its current T77U product page.

Its main reason to exist is interface space. A larger touch display can make directories, call controls and on-screen information easier to navigate, particularly for someone who spends much of the day handling calls.

The U suffix still applies. The T77U is not the automatic wireless choice merely because it is the largest phone in the group, so allow for compatible dongles if Wi-Fi or Bluetooth is required.

Is the T7 Series the Right Yealink Tier?

The T7 range sits in the premium executive part of the supplied Australian catalogue. It is aimed at roles where call handling is a substantial part of the working day, rather than every ordinary desk in a small office.

Yealink's T4 and T5 models remain relevant when the user needs a capable business handset but does not need the newest T7 interface or capacity mix. The Yealink T44W review and Yealink T54W review provide useful comparison points before moving into the T7 tier.

At the other end, the T8 series is positioned around larger, touch-first smart displays and a more application-led experience. Consider that tier only if its interface or platform features solve a defined workflow need, since a larger screen alone does not improve basic call quality.

If you're still deciding on the phone system itself, not just the handset, see our full guide to choosing a business phone system in Australia before committing to any hardware tier.

For a broader view beyond Yealink, see the Australian SIP desk phone buying guide and the Yealink versus Grandstream comparison.

Which T7 Phone Should You Buy?

Choose the T73U when 12 lines are enough, the desk has reliable Ethernet, and wireless accessories are unnecessary or deliberately restricted. It is the simplest specification match in the range for a fixed, cabled position.

Choose the T73W when the same 12-line capacity is enough but built-in Wi-Fi or Bluetooth solves a real problem. Typical examples include a desk without an Ethernet outlet or a user who needs a compatible Bluetooth headset without occupying a USB port.

Choose the T74U when the role needs 16 lines and will operate on a wired network. This is the practical specification for a high-volume desk that values capacity more than wireless convenience.

Choose the T74W when you need both 16-line capacity and built-in Wi-Fi or Bluetooth. It is the most flexible conventional-screen model in this five-phone comparison.

Choose the T77U when the 7-inch touchscreen is the deciding feature and a wired-first installation is acceptable. It makes the strongest case for an executive or reception role where the larger interface will be used throughout the day.

If you cannot describe why the role needs 12 or 16 lines, extensive extension monitoring or a large touchscreen, compare a T4 or T5 model before paying for the T7 tier. The reception desk phone guide can help translate call volume and staffing into handset requirements.

Australian Network, Number and Contract Considerations

Voice over Internet Protocol, or VoIP, carries calls over a data connection in much the same way a video meeting uses the internet instead of a separate video network. A T7 handset therefore cannot compensate for an unstable NBN service, congested office Wi-Fi or a poorly configured local network.

Use wired Ethernet for critical call-handling desks where practical. A W model provides placement flexibility, but it does not make an overloaded or weak wireless network suitable for reception traffic.

Australia's migration away from the legacy public switched telephone network, or PSTN, means these phones should be planned as internet-connected devices rather than direct replacements for an old copper wall phone. The brief records the main copper shutdown as completed in 2025, but the exact scope and exceptions should be confirmed before publication.

Most equipment connected through the NBN will not work during a power outage. The ACMA's emergency-calling guidance advises keeping another way to call 000, such as a charged mobile, because an NBN phone service may be unavailable when mains power fails.

If calls must continue during a short outage, a battery backup must cover the complete path, not just the handset. That can include the NBN connection equipment, router, network switch and phone. Power over Ethernet, or PoE, sends power and data through the same network cable, much like a single USB-C cable powering and connecting a laptop, but its switch still needs backup power.

Changing phones does not require changing the business number. If you also change providers, ACMA's Local Number Portability Code sets a benchmark of 8 business days for a standard geographic port (Category A), extending to up to 15 business days for the remainder of cases. A port that crosses technology types (Category C, for example an old copper line moving to VoIP) can take up to 30 business days. Keep the old service active until the new provider confirms the transfer is complete.

Local numbers, 13 and 1300 local-rate numbers, and 1800 freephone numbers can usually be transferred between providers. Their routing and call charges are service-plan decisions, not differences between the five T7 handsets.

Eligible business purchases can carry guarantees under Australian Consumer Law, and standard-form small-business contracts also have protections against unfair terms. Get handset compatibility, provisioning support, warranty handling, accessory requirements, early termination charges and ownership of rented equipment in writing before signing.

What Most Businesses Get Wrong

The first mistake is choosing from the screen size alone. A large touchscreen may look impressive, but the more important questions are how many extensions the user monitors, which call controls the phone platform supports, and whether the desk is wired.

The second mistake is treating the W suffix as automatically better. Built-in wireless is valuable when it solves a placement or headset requirement, but a fixed reception desk may be better served by Ethernet and a U model.

The third mistake is buying phones before confirming provider support. A handset can follow the SIP standard and still lack automatic configuration or full feature support on a particular service, so request written confirmation for the exact model and firmware branch.

Before You Buy

• Map each handset to a role instead of ordering one premium model for every employee.
• Count the lines and extension indicators each user actually needs.
• Decide whether each desk will use Ethernet, Wi-Fi, a wired headset or Bluetooth.
• Confirm compatible dongles, headsets, expansion modules and available USB ports.
• Ask the phone-service provider to confirm automatic configuration and feature support for the exact model.
• Obtain an itemised AUD quote including GST and every required accessory.
• Plan backup power and an alternative way to contact 000.
• Keep existing numbers active until any provider transfer is complete.
• If the right handset tier is still unclear, use the phone-system recommendation form for a setup-specific shortlist.

What is the difference between the Yealink T73U and T73W?

Both support 12 lines and use a colour display. The T73W includes Wi-Fi and Bluetooth, while the T73U requires compatible USB dongles for wireless features. Choose based on the connection and headset plan for the desk. If it will remain on Ethernet and does not need Bluetooth, the W model's main advantage may go unused.

What is the difference between the T74W and T77U?

Both support 16 lines, but the T74W has a 4.3-inch colour display with built-in Wi-Fi and Bluetooth. The T77U has a 7-inch touchscreen but requires compatible dongles for wireless connectivity. The decision is therefore large touch interface versus built-in wireless. Neither is automatically superior for every reception or executive desk.

Does the Yealink T77U have built-in Wi-Fi?

No, according to the supplied Australian comparison data. Its U suffix indicates that compatible USB accessories are required for Wi-Fi and Bluetooth. Confirm the supported dongle models and whether separate accessories can be used together before ordering. This is especially important if a USB headset or expansion module will also be connected.

Do receptionists need a 16-line phone?

Not always. The correct capacity depends on how many business identities, shared lines and staff extensions the receptionist must see or control. Ask the receptionist to list the people and queues they monitor during the busiest period. Then have the service provider map those requirements to available keys and screen pages.

Will a Yealink T7 phone work with an Australian NBN connection?

It can work over any suitable NBN connection when it is registered to a compatible VoIP service and connected through the office network. It does not plug directly into an old copper telephone socket and make calls by itself. Confirm the exact model with the phone-service provider before purchase. For installation steps, see the new IP phone setup guide.

Can I keep my existing business number when installing T7 phones?

Yes, changing handsets alone does not change the number. If the project also involves changing providers, keep the old number active and let the new provider manage the transfer. Standard geographic-number transfers generally take longer than mobile transfers (which complete within hours for most cases), and a technology-crossover or multi-number project needs more lead time again. Build the changeover around the provider's written porting schedule rather than the handset delivery date.

How much do the Yealink T73U, T73W, T74U, T74W and T77U cost in Australia?

NTKComms does not currently have verified AUD pricing for these five models, so this comparison does not quote a figure. Prices can vary between Australian resellers and may exclude dongles, power supplies or other accessories. Request current pricing from more than one Australian seller and compare complete configured costs. A lower handset price can be misleading if the installation needs extra wireless or headset hardware.