Desk Phone vs Softphone: Which Is Better for Your Business? (2026)

This guide compares desk phones and softphones for Australian businesses choosing or upgrading a VOIP phone system. The choice matters more than most people expect: many small businesses default to softphones because they sound simpler and cheaper, then discover that call quality, staff experience, and day-to-day reliability tell a different story. By the end of this guide, you will know exactly which option fits your business type, your team's working pattern, and your NBN connection -- and you will understand when the right answer is actually both.

Quick Verdict

What Is a Desk Phone?

A desk phone in a modern business context is almost always a SIP phone -- a hardware device that connects to your VOIP phone system over your office network. It looks like a traditional phone but operates entirely over the internet. There is no copper phone line. SIP desk phones from brands like Yealink, Grandstream, and Cisco Poly connect via ethernet (or Wi-Fi on some models), register with your VOIP provider's SIP server, and behave identically to any phone on your system -- same extension, same call transfer, same voicemail, same IVR.

When we talk about desk phones in this guide, we mean SIP desk phones. If your phone is plugged into an ATA adapter provided by your NBN provider, it is an analogue phone running over VOIP -- it looks like a traditional phone system and lacks the management features of a proper SIP desk phone.

What Is a Softphone?

A softphone is software -- an application running on a computer, tablet, or mobile phone -- that gives the device the full capabilities of a desk phone extension. Your laptop or smartphone becomes an extension on your business phone system. You can make and receive calls, transfer calls, access voicemail, join conference calls, and use every feature of your VOIP system through the app.

Softphone apps are available from most VOIP providers as part of the standard plan. Examples include Zoiper, Microsip, the Maxotel softphone app, 3CX, and the native apps bundled with hosted PBX platforms. On a mobile device, the softphone turns your personal phone into a business extension -- callers see your business number, not your personal mobile number, when you call out.

Side-by-Side Comparison

Call Quality: The Honest Comparison

Call quality is where desk phones and softphones most often diverge in practice -- and not always in the direction people expect.

A quality SIP desk phone (Yealink T33G, T43U, T54W) has hardware-level audio processing built in. The phone's DSP chip handles echo cancellation, noise reduction, and wideband HD voice independently of your computer. The result is consistent, professional call quality that does not degrade when your computer is under load, when you have 20 browser tabs open, or when someone else in the office is watching a video.

A softphone on a laptop or desktop can match this quality -- but only under the right conditions. The quality depends on the device's built-in microphone (usually poor for calls), the quality of the headset you use (a $30 headset sounds like a $30 headset), the processing load on the computer, and whether the audio drivers are configured correctly. A staff member taking client calls through the built-in laptop microphone in an open-plan office will sound noticeably worse than someone on a desk phone with a good headset.

A softphone on a mobile phone is a different scenario again. Modern smartphone audio processing is excellent. If a staff member is using a softphone on a current-generation iPhone or Android phone with a wired or Bluetooth headset, call quality is generally very good. The variable is the internet connection -- mobile data and residential Wi-Fi have more variability than a wired office network.

NBN Upload Speed: What Each Option Needs

Every VOIP call -- whether from a desk phone or a softphone -- uses your internet connection's upload bandwidth. The codec used determines how much:

• G.711 (standard quality): approximately 87 kbps upload per concurrent call
• G.729 (compressed): approximately 31 kbps upload per concurrent call
• Opus (adaptive): approximately 20-50 kbps upload per concurrent call, adjusting to available bandwidth

For most Australian business NBN connections, upload bandwidth is not the constraint -- even basic NBN plans offer 20 Mbps upload, which is enough for 200+ concurrent calls in theory. The real issue is consistency, not raw speed. Jitter (variation in packet arrival timing) and packet loss degrade voice quality more than low bandwidth does. A connection with 5 Mbps upload but rock-solid consistency will sound better than a 20 Mbps connection with variable jitter.

Desk phones connected via wired ethernet benefit from the most stable path possible. Softphones on Wi-Fi introduce wireless variability. Softphones on mobile data introduce carrier network variability. For a business with high call volume and quality-conscious clients, wired desk phones on a QoS-configured router remain the most reliable configuration.

See our guides on VOIP call quality in Australia and QoS settings for NBN routers and VOIP for more detail on managing connection quality.

Cost Comparison

The cost difference between desk phones and softphones is primarily in hardware, not in monthly plan fees. Most VOIP providers charge the same monthly rate per extension whether that extension runs on a desk phone or a softphone.

Desk Phone Costs (AUD)

Entry-level SIP desk phone (Yealink T31P, Grandstream GXP1630): $100-$140 AUD per unit. Mid-range with colour screen and Bluetooth (Yealink T43U, T46U): $160-$220 AUD. Executive models with large touchscreen (Yealink T57W): $280-$350 AUD. A 5-phone office setup at the entry-level is approximately $500-$700 AUD in hardware. Phones are a one-time purchase with a 3-5 year typical service life.

You can see a more detailed breakdown in our guide to the best SIP desk phones for Australian businesses.

Softphone Costs (AUD)

The softphone app itself is typically included in the VOIP plan at no extra charge. The variable cost is the headset, which is essential for professional calls. A quality USB headset for computer softphone use: $50-$120 AUD (Jabra, Poly, Logitech). A mobile-compatible headset for softphone on a smartphone: $30-$80 AUD (wired) or $80-$200 AUD (Bluetooth). If you are equipping a 5-person team with softphones and quality headsets, budget $250-$600 AUD in hardware -- significantly less than desk phones, but not zero.

Who Should Choose a Desk Phone

Desk phones are the right choice if any of the following describes your situation:

• Office-based teams with high call volume. Reception staff, customer service teams, and sales teams who are on the phone for several hours per day benefit from the ergonomics and call quality of a dedicated handset. The hardware pays for itself quickly in staff productivity and call experience.
• You want phones that are always ready. A desk phone is always on, always logged in, always ready to take a call. No one needs to open an app or remember to sign in. For a reception desk or a customer-facing team, this reliability matters.
• Open-plan offices with background noise. Desk phones with good handsets isolate the call from ambient noise more reliably than a laptop microphone. Staff taking calls in a noisy environment sound more professional on a desk phone.
• Clinical or technical environments. If staff are using their computers for other tasks during calls -- updating patient records, checking inventory, processing orders -- a desk phone keeps calls separate from computer activity.
• You have older staff who prefer a physical phone. Technology adoption has a human cost. For staff who are uncomfortable with softphone apps, a desk phone reduces friction and training time.

Who Should Choose a Softphone

Softphones are the right choice if any of the following describes your situation:

• Remote or hybrid teams. If staff work from home, from client sites, or from multiple locations, softphones give them full access to the business phone system from anywhere with an internet connection. A remote worker can answer calls, transfer to colleagues, and check voicemail exactly as if they were in the office.
• You are just starting out and want to minimise upfront cost. A solo operator or a team of two can get a fully functional VOIP system running with zero hardware spend. Download the app, enter your credentials, and you are live. When the business grows, add desk phones later if needed.
• Staff travel frequently. A softphone on a mobile phone means a travelling sales rep or consultant can receive and make business calls from their phone without giving out their personal mobile number. Clients see the business number, not the personal one.
• Calls are infrequent or short. If phone calls are a minor part of a staff member's day -- perhaps 2-3 calls per day averaging 3-4 minutes each -- the overhead of a dedicated desk phone is hard to justify.
• You need to add users quickly. Onboarding a new team member on a softphone takes minutes. Adding a desk phone requires ordering, shipping, and configuring hardware.

The Case for Using Both

Many Australian businesses end up with a hybrid setup -- desk phones for office-based roles with high call volume, and softphones for remote workers, managers, or occasional-use staff. This is often the best of both worlds, and most VOIP providers accommodate mixed deployments without issue. All extensions -- desk phone and softphone -- appear on the same system, share the same number range, and can transfer calls between each other.

A typical hybrid setup might look like this: a small professional services firm with 8 staff has 4 desk phones at the office (reception and account managers), 3 softphones for consultants who work from home or on-site, and 1 softphone on the owner's mobile for when they are out of the office. All 8 extensions share the same VOIP platform and the same business number range. The total hardware cost is 4 desk phones at ~$140 AUD each -- approximately $560 AUD -- versus $0 for the softphone users.

For businesses thinking about the hosted PBX infrastructure that makes this work, our guide to hosted PBX vs on-premise PBX explains the platform choice behind any mixed deployment.

Australian Businesses: What You Need to Know

NBN Connection Type Matters for Both

Australian offices on Fibre to the Premises (FTTP) or Fibre to the Building (FTTB) have the most consistent upload quality and are well-suited to either desk phones or softphones. Offices on Fibre to the Node (FTTN) depend on last-mile copper quality, which varies by premises. If your FTTN connection has variable upload quality, wired desk phones on a QoS-configured router will be more resilient than Wi-Fi softphones.

You can check your NBN connection type at nbnco.com.au. If you are on FTTN and experiencing call quality issues, explore whether a technology upgrade is available before investing in hardware.

The PSTN Copper Shutdown and What It Means for Your Setup

Australia's PSTN copper network has been switched off in NBN service areas. If your business phone is currently plugged into an ATA adapter provided by your ISP as part of the NBN installation, you are technically already on VOIP -- but on the most basic version of it. That ISP ATA gives you call connectivity but no phone system features.

Choosing between a desk phone and a softphone only becomes relevant once you are on a proper VOIP platform from a specialist provider. The first decision is moving off the ISP ATA to a hosted VOIP service. The second decision is what device to use. See our guide on migrating from a landline to VOIP in Australia for how the transition works.

Number Porting When Switching Providers

Whether you choose desk phones or softphones, if you are switching VOIP providers and want to keep your existing phone number, you will need to port it. Number porting in Australia takes 5-10 business days for geographic numbers. Do not cancel your existing service before the port completes. Your new provider should manage the port -- if they ask you to handle it yourself, that is a red flag.

Our NBN VOIP setup guide covers the full provisioning process including number porting.

Australian Consumer Law and Telco Contracts

Under Australian Consumer Law, telco services must be fit for purpose. If a provider sells you a VOIP plan that does not deliver adequate call quality for business use, you have grounds to seek a remedy. The Telecommunications Industry Ombudsman (TIO) handles disputes between businesses and telco providers.

When signing up with a VOIP provider, check the contract length. Month-to-month agreements are common in the Australian hosted VOIP market. Avoid lock-in contracts longer than 24 months unless there is a compelling cost reason -- the market moves quickly and provider quality changes. Hardware purchased outright (rather than bundled into a contract) is yours to keep, regardless of which provider you move to.

What Most Businesses Get Wrong

Mistake 1: Choosing Softphone to Save Money, Then Losing it to Headset Problems

The appeal of softphones is obvious: no hardware cost, instant setup. The problem arrives when staff start taking client calls through built-in laptop speakers and microphones. The call quality is poor. Clients struggle to hear. Background noise bleeds through. The business looks unprofessional.

Softphones work well when paired with a quality headset. Without one, they consistently underperform. If you choose softphones, budget for proper headsets. A $70-$100 AUD USB headset per user is the minimum for professional client-facing calls. This cost is still less than a desk phone, but it is not zero -- factor it in before committing to an all-softphone setup.

Mistake 2: Assuming Softphones Are Always On

A desk phone is always on and always logged in. A softphone is only active when the application is running and the user is logged in. If a staff member closes their laptop, quits the app, or lets their phone battery die, they become unreachable on their business extension. Calls go to voicemail with no notification.

This is a genuine operational issue for businesses that need reliable call coverage. The mitigations are: configure the softphone app to start automatically on login, enable push notifications on mobile softphones so calls wake the screen, and set up a failover rule that diverts unanswered calls to a backup number after a set number of rings. These configurations are available on all serious VOIP platforms, but they require deliberate setup -- they do not happen automatically.

Mistake 3: Not Configuring QoS Before Deploying Either Option

Both desk phones and softphones share the office internet connection with every other device and service. Without QoS (Quality of Service) configured on the router, a file sync, a large email attachment, or a video call from one staff member can degrade call quality for everyone else.

QoS is not complex to configure on a modern business router, but it is almost never done by default. Assign VOIP traffic to the highest priority class on your router before go-live. If your current router does not support QoS, it is worth upgrading to one that does -- budget $150-$300 AUD for a capable business router. The improvement in call consistency is noticeable and immediate.

Your Next Steps

Work through this checklist to land on the right setup for your team:

• Identify your working pattern. How many staff are office-based full-time? How many work remotely or hybrid? How many travel regularly? This drives the desk phone vs softphone split.
• Assess call volume per role. Staff who handle 10+ calls per day benefit significantly from a desk phone. Staff who handle 2-3 short calls per day can use a softphone without compromise.
• Check your NBN connection type and quality. Run an upload speed test and note whether quality is consistent. FTTN connections with variable quality benefit from wired desk phones with QoS configured.
• Budget for headsets if choosing softphones. Do not include softphones in your plan without also budgeting $70-$120 AUD per user for a quality headset.
• Configure QoS on your router before go-live. Whether you use desk phones or softphones, QoS ensures VOIP traffic is prioritised over bulk data transfers.
• Consider a UPS for your networking equipment. Both desk phones and softphones stop working in a power outage. A UPS ($150-$300 AUD) provides a bridge during short outages.
• Test before full deployment. Run a desk phone and a softphone in parallel for one week before committing the full team. Your own experience in your own office is more reliable than any guide.

If you want a personalised recommendation for your business type and team size, use our free recommendation service.

Whether you use a desk phone or a softphone, a quality headset makes a significant difference to call comfort and audio clarity. See our guide to the best headsets for VOIP office use in Australia.

Is a softphone free?

The softphone app is usually included at no extra charge in your VOIP plan. The device it runs on -- your laptop, desktop, or mobile -- is a device you already own, so there is no hardware cost. The practical cost is the headset: plan for $70-$120 AUD per user for a quality USB or Bluetooth headset if staff will be making professional client calls. Without a headset, softphone call quality through built-in laptop microphones is generally not acceptable for business use.

Can I use a softphone and a desk phone on the same extension?

Yes. Most VOIP platforms support simultaneous registration -- your desk phone and your softphone app can both be registered to the same extension at the same time. When a call comes in, both ring. Whichever you answer, the call connects. This is useful for staff who are sometimes at their desk and sometimes away from it. Check with your specific provider that simultaneous registration is supported, as configuration varies.

Do softphones work on 4G and 5G mobile data, or only on Wi-Fi?

Softphones work on 4G and 5G mobile data. Modern mobile networks generally provide sufficient bandwidth and low enough latency for VOIP calls. Call quality on 5G is typically excellent. 4G quality varies by coverage strength and network congestion -- in a strong 4G area, calls are usually clear; in a marginal 4G area, quality can drop noticeably. Wi-Fi is preferable when available for consistent quality. If a staff member is regularly making calls from areas with variable mobile coverage, a desk phone at their primary location is the more reliable option.

What happens to calls if the softphone app is closed or the phone battery dies?

Calls divert to voicemail or follow the failover rules configured on your VOIP platform. If you want calls to be reliably answered, configure the softphone app to start automatically on device login, enable push notifications so incoming calls wake the app even when it is in the background, and set up a failover rule that tries a backup number after a set ring timeout. These configurations need to be explicitly set up -- they do not happen by default on most platforms.

Which is better for a home office or remote worker?

Softphones are almost always the right choice for remote workers and home office setups. The softphone app turns the existing laptop or mobile into a business extension with zero hardware cost and zero shipping. It connects to the office phone system over any reliable internet connection, allowing the remote worker to transfer calls, access voicemail, and participate in ring groups as if they were in the office. A desk phone at a home office is only worth considering if the remote worker is on the phone for most of the day and wants the ergonomics and audio quality of dedicated hardware.

How much NBN upload speed do I need for VOIP calls?

Each concurrent VOIP call uses approximately 87 kbps upload (G.711 codec) or 31 kbps (G.729 codec). For a 5-person office where all staff might be on calls simultaneously, you need approximately 435 kbps upload minimum for G.711 -- well within any standard NBN plan's upload capacity. The more important metric is consistency: jitter and packet loss degrade call quality more than low bandwidth. A connection with 5 Mbps consistent upload sounds better than a 20 Mbps connection with variable jitter. Configure QoS on your router to prioritise VOIP traffic and you will solve the consistency issue on most standard NBN connections.

Can I mix desk phones and softphones in the same office?

Yes, and it is very common. All extensions -- desk phones and softphones -- appear on the same VOIP platform, share the same number range, and can transfer calls between each other regardless of whether the endpoint is a physical phone or a software app. A typical mixed setup gives desk phones to reception and high-volume staff, and softphones to remote workers, managers who travel, and occasional-use staff. Most VOIP providers accommodate mixed deployments with no additional platform cost.

Are desk phones or softphones better for call recording?

Call recording is handled at the platform level (in the cloud, on the VOIP provider's servers) rather than at the device level for most hosted VOIP services. This means recording quality is independent of whether you are on a desk phone or a softphone -- calls are captured after they reach the provider's infrastructure, before they reach your device. If you need call recording for compliance or quality assurance, confirm the feature is available on your chosen VOIP plan, and check that the provider stores recordings securely and provides a retrieval interface that meets your needs.