Answer 5 quick questions about your team, your offices, and how you use the phones. In 90 seconds you'll get a personalised recommendation — what hardware to buy, what plan level suits you, and what it'll roughly cost.
VOIP (Voice over IP) replaces traditional phone lines with calls over your internet connection. This wizard helps you work out exactly what hardware and plan you need.
Need to Know Comms Team
Step 1 of 5
Let's size your phone system
Tell us about your team. This takes about 90 seconds.
Desk-based + roaming + remote must equal the number of staff needing extensions. Please adjust the numbers.
Your locations
Tell us about your physical sites.
Call patterns
How does your team use the phones?
Which of these matter to your business?
Which of these would be useful for your business? If you're not sure what something does, choose 'Not sure' — we'll include it in our recommendation if it makes sense for your setup.
Automated phone menuCallers hear 'Press 1 for sales, 2 for support' instead of a receptionist answering every call
Ring multiple staff at onceWhen a customer calls, all phones in a group ring until someone picks up (e.g. the whole sales team)
Call recordingAutomatically save a recording of every call for training, compliance, or resolving disputes
Call queuingCallers wait in line with hold music instead of getting a busy signal — common for support teams
Connect to your customer databaseLinks your phone system to software like Salesforce, Zoho, or HubSpot so call history appears on customer records
Phone app for computers and mobilesMake and receive business calls from a laptop or smartphone — no desk phone needed
1300 or 1800 numberA shared business number. 1300 = local-rate for callers. 1800 = free-call for callers.
Keep your existing phone numbersTransfer your current business numbers to the new system
Fax capabilitySend and receive faxes through the phone system (usually as email attachments)
Conference callingMulti-person calls — three or more people on the same call
One more thing (optional)
This helps us refine your recommendation, but you can skip it.
Your Phone System Recommendation
Based on the information you provided, here is what we recommend.
Your NBN connection type may impact VOIP call quality. We recommend checking your bandwidth requirements before committing to a plan.
Ready for an exact recommendation?
Share a few more details and our team will match you with the right provider and plan for your business.
Methodology: Sizing based on your team size, how your staff work, and how busy the phones get. Hardware recommendations reflect Australian market pricing as of March 2026.
Quick Reference: Sizing Rules of Thumb
Business size
Extensions
Concurrent paths
Desk phones
DECT
Plan tier
1-5 (micro)
3-5
2
2-4
0-1
Basic-Mid
6-15 (small)
6-15
3-6
5-12
0-3
Mid
16-30 (medium)
16-30
6-12
12-25
2-6
Mid-Premium
31-50 (larger)
30-50
10-20
20-40
3-10
Premium
Common Sizing Mistakes
Buying a phone for every staff member. Not every employee needs a dedicated desk phone. Remote workers are better served by softphone apps. Warehouse or roaming staff need cordless handsets, not desk units. Buying one phone per head is the most common way businesses overspend on hardware.
Ignoring concurrent call limits. Your phone system's concurrent call paths determine how many conversations can happen at the same time. If you run out, callers get a busy signal or hear dead air. Most hosted plans include a set number of paths per tier. Choosing the wrong tier means dropped calls during busy periods.
Forgetting about growth. A system that fits today but has no headroom for 12 months of hiring will need replacing sooner than expected. Build in 20-30% capacity above your current needs. Most hosted VOIP plans let you add extensions month to month, but hardware orders take time.
Skipping reception-grade phones. Reception desks handle high call volumes, frequent transfers, and visitor interruptions. A basic entry-level handset with two line keys is not enough. Reception phones need at least 6 line keys, a colour screen, and BLF (busy lamp field) support so receptionists can see who is available before transferring.
Not accounting for DECT range. DECT cordless handsets work within a limited range of their base station (typically 50m indoors, 300m outdoors). Large warehouses, multi-story offices, or outdoor areas may need DECT repeaters. Budget for repeaters if your site extends beyond a single floor or has thick walls.
Most small businesses with 5 to 15 staff need 3 to 6 concurrent call paths (not one line per person). The exact number depends on your peak call volume. If 30% of your team is on the phone at the same time during busy periods, a 10-person office needs about 3 concurrent paths. With hosted VOIP, you pay per extension but share call paths, so you rarely need a 1:1 ratio of lines to staff.
Count the people who need their own extension (not just total staff). Then estimate your peak simultaneous call percentage. Multiply extensions by that percentage to get concurrent call paths. Add desk phones for office-based staff, cordless handsets for roaming staff, and softphone licences for remote workers. Our sizing wizard above calculates all of this automatically based on your answers.
No. Staff who work remotely can use softphone apps on their laptop or mobile. Staff who roam between areas (warehouse, shop floor, between offices) are better served by DECT cordless handsets or mobile softphones. Only desk-based staff who spend most of their day at a fixed workstation need a traditional desk phone. Buying a desk phone for every employee is one of the most common sizing mistakes.
A single VOIP call uses about 100 kbps of bandwidth in each direction. On a standard NBN 50 plan with 20 Mbps upload, you can comfortably handle 10 to 15 concurrent calls with headroom for other traffic. The real limit is usually your plan's concurrent call path allocation, not bandwidth. Most hosted PBX providers include a set number of concurrent paths per plan tier and charge extra if you exceed them.
An extension is an internal number assigned to a person or device on your phone system. A phone line (or call path) is a channel that can carry one active call at a time. You typically need more extensions than lines. For example, a 20-person office might have 20 extensions but only need 6 to 8 concurrent call paths, because not everyone is on the phone at once. With traditional systems you paid per physical line. With hosted VOIP, you pay per extension and share a pool of call paths.