Cloud PBX,
Set Up By a Real Person.
Most cloud PBX providers hand you a login and a setup guide. Phonewire configures your cloud PBX system, installs real desk phones where you need them, and backs it with U.S.-based support — so “cloud” doesn’t mean “figure it out yourself.”
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What Is Cloud PBX?
A cloud PBX (private branch exchange) is a business phone system hosted on a provider’s servers instead of a physical PBX box in a closet at your office. Extensions, call routing, voicemail, and auto attendants all run in the cloud, so calls travel over the internet instead of traditional phone lines — no on-site hardware to maintain or eventually replace.
That’s the same core idea behind hosted PBX, virtual PBX, and cloud-based phone systems — the terms get used almost interchangeably in the industry. The real difference between providers isn’t the underlying technology. It’s what happens after you sign up: some hand you a login and a PDF setup guide. Phonewire sends someone to set it up.
From Your Desk to the Outside World
A cloud PBX call travels through the same basic path no matter who your provider is. Here’s what happens on every call — and what Phonewire adds so it still works when your internet doesn’t.
Office Phones & App
Desk phones and mobile/desktop apps at your location
Your Internet
Calls travel over your office’s internet connection
Cloud PBX Platform
Hosted, redundant, and configured by Phonewire
Outside Calls
Customers, vendors, and everyone else you call
If your internet connection goes down, Phonewire’s cellular data network failover reroutes calls automatically — your Cloud PBX Platform stays reachable with no dropped calls and nothing for you to configure.
Cloud PBX without the DIY setup
Most cloud PBX providers are built for self-service: you provision your own extensions, order your own phones, and troubleshoot your own number porting. Phonewire runs the same kind of cloud infrastructure — hosted, redundant, no on-site server to maintain — but installs and configures it for you.
Set up for you, not by you
We configure every extension, ring group, and auto attendant before you ever log in. No self-service portal to figure out on your own.
Real desk phones, if you want them
Cloud PBX doesn’t have to mean app-only. We install and provision physical desk phones from Yealink, Poly, Snom, and Grandstream alongside your cloud system.
Works without internet
Cellular data network failover keeps your cloud PBX reachable even when your office internet goes down — most cloud-only providers simply go silent.
U.S.-based support
When something needs attention, you reach a person in the U.S. who knows your setup — not a generic ticket queue or offshore Tier 1 script.
What you get that a self-service portal won’t
| Capability | Phonewire | Typical cloud PBX provider |
|---|---|---|
| Setup & configuration | Included | Self-service portal |
| Physical desk phones | Installed & configured | Ship-to-you, self-setup |
| Internet outage protection | Cellular data network failover | Goes offline |
| Number porting | Handled for you | Self-service or extra fee |
| Legacy PBX replacement (Avaya, NEC, Mitel) | Included | Not offered |
| Support | U.S.-based, by phone | Ticket queue, chatbot first |
Cloud PBX vs. Hosted PBX vs. On-Premise PBX
These terms cause more confusion than they should — here’s the plain-language version.
Cloud PBX & hosted PBX
These are the same thing. Both describe a PBX hosted on a provider’s servers rather than hardware in your building. Some providers use one term in marketing and the other in the fine print — functionally, they’re identical.
Virtual PBX
Usually refers to a lighter, app-only setup aimed at very small teams. It’s a subset of cloud PBX, not a different category of system.
On-premise (legacy) PBX
The traditional model — a physical PBX box on-site, like an Avaya, NEC, or Mitel system. Cloud PBX replaces that box with software hosted off-site, so there’s no on-site hardware to patch or eventually replace.
Moving From a Legacy PBX to the Cloud
If you’re running an aging on-premise PBX — especially an Avaya, NEC, or Mitel system the manufacturer has stopped supporting — moving to cloud PBX doesn’t have to mean weeks of disruption. A complete migration follows the same sequence every time:
- Site assessment and a full inventory of your existing numbers and extensions
- Configuration of your new cloud PBX to match — or improve on — your current call flows
- Hardware installation for any new desk phones
- Number porting, coordinated in the background
- Side-by-side testing before cutover
- Staff training
Most small-business migrations are completed in a single day on-site, with number porting handled in the background so there’s no service gap. See our complete installation guide for a full walkthrough of the process.
What Drives the Cost of a Cloud PBX System
There’s no single price because no two businesses use their phones the same way. A few factors move the number more than anything else:
- Number of extensions and users
- Physical desk phones vs. app-only lines
- Number porting and any legacy PBX replacement
- Add-ons: call recording, cellular failover, intercom or paging integration
- Support level and response-time requirements
Setup, configuration, and number porting are included in every Phonewire quote, not billed as add-ons after the fact. Request a free quote to see pricing for your setup.
Cloud PBX FAQ
What is cloud PBX?
Cloud PBX is a business phone system hosted on a provider’s servers instead of a physical PBX box at your office. Extensions, call routing, voicemail, and auto attendants all run in the cloud, so calls travel over the internet rather than traditional phone lines. Phonewire configures and installs your cloud PBX system rather than handing you a self-service portal.
Is hosted PBX the same as cloud PBX?
Yes. “Cloud PBX” and “hosted PBX” describe the same thing — a PBX hosted on a provider’s servers rather than hardware in your building. Different providers favor one term over the other, but functionally they’re identical.
How do I migrate from a legacy PBX to cloud PBX?
A migration starts with a site assessment and a full inventory of your current numbers and extensions, followed by configuring your new cloud PBX to match your call flows, installing any new desk phones, porting your numbers in the background, testing everything side-by-side, and training your staff. Phonewire handles this end-to-end rather than leaving you to reconfigure things yourself.
How long does it take to switch from an on-premises PBX to the cloud?
Most small-business migrations are completed in a single day on-site. The exact timeline depends on the number of extensions, whether new desk phones are involved, and how many numbers need to be ported. Number porting is coordinated in the background so there’s no service gap during the switch.
How much does cloud PBX cost?
Cost depends on the number of extensions, whether you want physical desk phones or app-only lines, and any add-ons like call recording or cellular failover. Phonewire provides a clear quote after a short consultation, with setup, configuration, and number porting included rather than billed separately.
Does cloud PBX still work if the internet goes down?
With most providers, no — a cloud PBX depends entirely on your internet connection, so an outage takes your phones down with it. Phonewire builds cellular data network failover into every deployment, so calls keep routing even when your primary internet connection fails.
Do I need physical desk phones with cloud PBX, or is an app enough?
Cloud PBX doesn’t require physical desk phones, but most teams still want them for call quality and reliability. Phonewire installs and configures real desk phones alongside your cloud PBX system, and can add mobile or desktop apps on top for staff who need them.
Get a cloud PBX system someone else sets up right
Tell us how your team uses the phone and we’ll configure, install, and support a cloud PBX system built around it — no self-service portal required.
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