If you are pricing a new phone system, you have probably hit the term "VoIP PBX" a hundred times without anyone explaining what it actually means. A PBX (Private Branch Exchange) is the brain that routes calls inside your business: extension-to-extension, out to the street, and back in from customers. A VoIP PBX is that same brain running over the internet instead of over copper wires sitting in a closet.
We build and operate VoIP PBX systems for businesses out of our Ocoee, FL headquarters. We are the operator, not a reseller, which means when something needs attention, our engineers handle it directly instead of opening a ticket with somebody else who is opening a ticket with somebody else. Here is how a VoIP PBX works, what it costs, what it does well, what it does not do, and what to look at before you sign anything.
How a VoIP PBX actually works
When you talk into a desk phone or softphone, the call is digitized, broken into packets, sent over the internet to our PBX in the cloud, routed to the right destination, and reassembled on the other end. The handoff happens in milliseconds. The pieces involved:
- IP phones or softphones. A physical desk phone, a Pro Mobile app on your cell, or a softphone on a laptop. All three ring at the same time if you want.
- The hosted PBX. Lives in our data centers. Handles routing, auto-attendants, voicemail, hunt groups, call recording, and reporting. You manage it through a web portal.
- SIP trunks. The digital lines that connect the PBX to the public phone network. Our SIP trunking is $15 per channel, $0.015 outbound, $0.005 inbound.
- Your internet connection. A clean business circuit with enough headroom for voice. About 100 kbps per concurrent call, plus headroom for everything else on the network.
What happens on a typical inbound call
A customer dials your main number. The call hits our SIP trunks, then our PBX. The PBX checks your routing rules: business hours, caller ID match, voicemail status. It plays the right greeting, sends the call to your auto-attendant or a specific extension, and rings every endpoint you have assigned (desk phone, mobile app, softphone). If nobody answers in the ring window, the PBX moves to the next step: hunt group, voicemail, or after-hours mailbox. The whole path is configured by you in the web portal, not by a tech with a cable in his teeth. When you decide tomorrow that calls between noon and 1 PM should go to a lunch greeting, you change it yourself in three clicks.
What happens on an outbound call
You pick up the desk phone or the Pro Mobile app, dial the number, and the audio packets travel from your endpoint to our PBX, through our SIP trunks, and out to the destination carrier. The far end sees your business caller ID. The call is recorded if you have recording on. The call detail record is written to the reporting database in real time. You can look at it ten seconds after the call ends and see exactly who called who, for how long, from where. None of that was true on a legacy POTS line.
What the network actually has to do
A clean voice call needs about 100 kbps of bandwidth and consistent latency under about 150 ms. Jitter (variation in packet arrival) should stay under 30 ms. Packet loss should be under 1 percent. A business circuit with QoS handles all of that without thinking. A residential line on a busy Saturday with three kids streaming video does not. The network setup is half the install. We do not pretend otherwise.
What a hosted PBX gives you that the old box did not
The old on-premise PBX sat in a closet, cost five figures up front, and needed a tech to change a greeting. A hosted VoIP PBX moves that hardware off your books and turns the system into something you can manage yourself.
- Auto-attendants and IVR menus so calls get to the right person without a live receptionist.
- Voicemail-to-email with optional transcription (paid add-on), so nobody is dialing in to check messages.
- Call routing rules by time of day, caller ID, department, or skill.
- Mobile apps that ring your cell as your work extension so you can stop paying cell phone allowances.
- CRM and tool integrations with platforms like Microsoft Teams, Clio, ServiceTitan, and AppFolio.
- Real reporting: how many calls came in, who answered, how long they waited, how many got missed.
The features that used to cost extra
On a legacy PBX, every feature was an add-on with its own bill: voicemail card, conference bridge, call recording license, IVR module. On a hosted VoIP PBX, those are part of the platform. Call recording, ring groups, queues, SMS from the business number, and softphones come with the plan. You can turn them on in the portal in minutes. You stop calling a tech to add an extension. You also stop paying for a maintenance contract that mostly billed you for showing up.
Self-service is the actual change
The shift from on-prem to hosted is not just hardware location. It is who controls the system. On the old box, the tech controlled it. On a hosted PBX, you do. You add an extension because a new hire started. You change a greeting because the office is closing early for a holiday. You re-route a department because the team got reorganized. None of those changes wait on a calendar slot from a vendor. The system that runs your phones should be the system you can change at 10 PM the night before a busy Monday, and the hosted model is what makes that real.
What it actually costs
Our phone service runs $15 or $32 per user per month depending on the tier. That includes the PBX, the extensions, the calling features, and US calling. If your team is mobile-first, Pro Mobile is $42 to $62 per user per month and replaces the cell phone allowance entirely. Full pricing is on the pricing page, no quote form required.
Compare that to a traditional PBX: $300 to $1,000 per extension up front for the hardware, plus monthly PRI or POTS charges, plus a tech on speed dial for every change. The math stops being close once you cross about ten users.
The five-year total cost view
A 20-user on-prem PBX with copper lines, fully loaded, runs roughly $80,000 to $120,000 over five years once you include hardware amortization, line charges, maintenance, tech visits, and feature add-ons. The same 20 users on our $32 plan is $7,680 a year, or about $38,000 over five years. Even after you add SIP trunks for fax and a few hardware phones from the hardware page, the hosted path comes in under half the legacy total.
Hardware costs if you want desk phones
Desk phones are optional, not required. Our team uses softphones and the Pro Mobile app for half the day. When you do want hardware, here are the MSRPs we sell at: Yealink T33G $125, T46U $269, T54W $289. Cordless: W73P $185. Conference room: CP965 $989. Headsets: WH66 Dual UC $409, BH71 $119. Wifi router for voice: AX86R $209. See the hardware page for the full list. You can also bring your own SIP-capable phones if you already have a closet of them, and we will provision them on the platform without charging a per-device tax.
The honest tradeoffs
A VoIP PBX is not magic. A few things to know going in:
- Internet matters. If your circuit is flaky, your calls will be too. A business-grade connection with QoS handles voice cleanly. We help you size it before cutover and tell you if your current circuit will not cut it.
- Power outages need a plan. Phones over the network mean if power goes out and you do not have a battery backup, the desk phones go dark. Calls still ring your Pro Mobile app on cellular, so the business does not stop, but the desk phones do.
- E911 has rules. Address on file has to be current. A misdial fee is $150, so it is worth getting right the first time and updating when locations change.
- Porting takes a week or two. Number porting is $15 per number. We handle the carrier paperwork, but the losing carrier sets the timeline within a window.
- Voicemail transcription is paid. The free version drops a recording in your inbox. Transcription is an add-on, not a hidden gotcha.
- Analog devices need a plan. Fax, alarm, elevator, gate intercom. Each one has a hosted answer (vFAX, cellular modules) but each one is a real conversation at install time.
What we do not do
We do not sell you a phone system, hand you a login, and disappear. We do not pretend a 5 Mbps DSL line will handle 20 concurrent calls. We do not bundle a 36-month contract with auto-renew on the back page. We do not charge a separate "e911 fee," a "regulatory recovery fee," or any of the other line items the legacy carriers use to make the headline price look smaller than the actual bill. We also do not sell you on "unified communications" features you will never use; if you want a phone system, you get a phone system that works.
Common mistakes when shopping a VoIP PBX
- Focusing on the per-user price only. Look at what is included. Some providers price low and charge for voicemail-to-email, call recording, mobile app, or SMS as add-ons.
- Underestimating internet. A residential circuit will work for two extensions on a quiet morning. It will not survive a busy afternoon with video calls running at the same time.
- Ignoring the analog edge cases. Fax machines, alarm panels, elevator phones, gate intercoms. Each has a different fix. We have vFAX for fax. The others usually move to cellular modules.
- Skipping the porting plan. Cutover should be tested first, then numbers ported, then old service disconnected, in that order. Disconnecting first is how numbers get lost forever.
- Buying a 5-year contract for a 3-year business plan. Month-to-month is fine. Multi-year deals should pay for themselves in the first year, not the fifth.
- Skipping the integrations conversation. If your team lives in a CRM, the screen-pop and call logging are half the productivity gain. Confirm the integration is real, not a roadmap item.
- Forgetting remote workers. Pro Mobile and softphones extend the PBX to wherever the team works. If you only buy desk phones, you only get half the system.
What to ask a provider before you sign
- Are you the operator or a reseller? If reseller, who is the actual platform?
- What is included at the price you quoted? Voicemail-to-email? Call recording? Mobile app? SMS?
- What are the fees beyond the per-user price? E911? Regulatory? Transcription? Porting?
- What does a power or internet outage look like, and what is the failover plan?
- How is E911 registered and how do you confirm the address is right?
- What is the porting timeline and who files the paperwork?
- Where is your support based, and who answers when something breaks at 7 PM on a Friday?
- What integrations do you actually have (not "we can build it" or "on the roadmap")?
- Can I see a real customer reference in my industry?
If you do not get straight answers in plain English, move on. The questions are not unreasonable, and a real operator can answer all of them without checking with marketing.
Is a VoIP PBX right for you?
If you have more than one or two people on the phone, you want call routing, voicemail-to-email, mobile ringing, and reporting without owning a PBX in a closet, this is the right tool. If you run a single-line operation in a building with no internet, it is not. If your existing on-prem PBX is paid for, fully functional, and your team is all in one building, SIP trunking it through us might be a better short-term move than a full hosted migration.
For specific industries we have built tuned setups: healthcare, dental, legal, wellness, real estate, property management, and field service. Same PBX, configured for the workflow. If you run multiple offices, the multi-location setup shares one PBX across all sites with no inter-office trunking.
How a hosted PBX scales with you
Add a user, pay for a user. Drop a user, stop paying for that user. Open a second office, share the same PBX. Hire a remote employee in another state, give them a softphone or Pro Mobile. The system grows and shrinks with the headcount because the platform is shared. The old model required you to buy ports in chunks of 10 or 24 and live with the over- or under-provisioning until the next hardware refresh. You stop making capital decisions about phones.
Where to start
Tell us how many users you have, what your current setup looks like, and what you are paying today. We will price it on the pricing page terms, walk you through the porting plan, and tell you straight whether it is a fit. If you have a paid-for on-premise PBX that still works, we will say so. If hosted is the better answer, we will show the math with your numbers, not generic ones. Get started here, see the FAQ for common questions, browse the features list, or talk to someone in Ocoee. The conversation is short and it costs nothing.