--- title: "Hosted PBX vs Virtual PBX: What They Are | Chargezen" description: "What a PBX does, how hosted and virtual PBX differ from an on-site system, the features you get, what it costs and a checklist for switching providers." url: "https://chargezen.com/blog/hosted-pbx" lang: "en" updated: "2026-10-18" --- Canonical URL: https://chargezen.com/blog/hosted-pbx # Hosted PBX and Virtual PBX: What They Are and How to Choose DTC Strategy · 7 min read ![Jerry Abrahamson](https://chargezen.com/assets/blogpost1.6581a30d.png) Jerry Abrahamson Founder & CEO • Oct 18, 2026 ![Hosted PBX and Virtual PBX: What They Are and How to Choose](https://chargezen.com/og-default.png) A PBX (private branch exchange) is the phone system inside a business. It gives everyone an extension, lets calls move between desks, plays the "press 1 for sales" menu and sends calls to voicemail. For decades it was a box in a closet. Today most businesses rent one that runs in a provider's data center instead: a hosted PBX, also sold as a cloud PBX or virtual PBX. This guide explains what a PBX does, how hosted, virtual and on-site systems differ, which features matter, what it costs and how to switch. "Hosted PBX" and "virtual PBX" are covered together here because vendors use the two terms for overlapping products; the differences are explained below. ## What a PBX does * **Extensions**: Short internal numbers (101, 102) so people can call each other and callers can dial a person directly. * **Auto attendant (phone menu)**: "Press 1 for sales, 2 for support." Our guide to [IVR vs AI phone agents](https://chargezen.com/blog/ivr-vs-ai-phone-agent) covers when menus help. * **Ring groups and call queues**: Ring a team at once or in turn; hold callers in line with music and position announcements. * **Transfers, hold and park**: Pass a caller to a colleague with or without introducing them first, or park a call for anyone to pick up. * **Voicemail**: A box per person and shared boxes for teams, often emailed or transcribed. * **Business hours and routing rules**: Different handling for daytime, after hours and holidays. * **Outside lines**: The connection to the public phone network, through SIP trunks or phone lines. ## On-site, hosted and virtual: the differences | | On-site PBX | Hosted (cloud) PBX | Virtual PBX (lightweight) | | --- | --- | --- | --- | | Where it runs | Hardware in your building | Provider's data centers | Provider's data centers | | What rings | Desk phones on your network | Desk phones, computer and phone apps | Mostly the cell and home phones you already have | | Who maintains it | You or a dealer | The provider | The provider | | How you pay | Upfront purchase plus maintenance and trunks | Per user per month | Flat monthly plan or per user | | Typical buyer | Large sites with in-house IT | Offices with people at desks | Solo owners and small teams on the move | Vendors use these names loosely. Check the feature list, not the label. In practice, "hosted PBX" usually means a full cloud phone system with desk phones and extensions, such as RingCentral, Zoom Phone, Ooma Office or Dialpad. "Virtual PBX" more often means a lighter service that gives you a main number, extensions and a menu, then forwards calls to phones you already own. Grasshopper is a well-known example (see our [Grasshopper comparison](https://chargezen.com/compare/grasshopper)). ## Why businesses move to a hosted PBX * No hardware to replace when the system reaches end of support. * People can answer their extension from home or a phone app. * Adding a user or changing a menu is done in a web page. * Updates and security patches are the provider's job. * Multiple offices share one system without linking boxes together. The trade-offs: you depend on your internet connection and the provider's uptime, and per-user pricing grows with headcount. ## What it costs Hosted PBX plans are priced per user per month. Published examples, billed annually: Zoom Phone from $16, Dialpad Connect from $15 and Ooma Office from $19.95 per user ([Zoom Phone pricing](https://zoom.us/pricing/zoom-phone), [Dialpad pricing](https://www.dialpad.com/pricing/) and [Ooma Office plans](https://www.ooma.com/small-business-phone-systems/plans/), checked October 19, 2026), and RingCentral RingEX from $20 per user for 1–5 users ([our RingCentral comparison](https://chargezen.com/compare/ringcentral), checked October 18, 2026). Phone menus, call queues and analytics are often on higher tiers or sold as add-ons. Our guides to [VoIP cost](https://chargezen.com/blog/voip-cost) and [business phone system cost](https://chargezen.com/blog/business-phone-system-cost) list the fees to add. ## How to choose a hosted PBX * Map your calls first: who should answer what, during and after business hours. * Check which plan tier includes the menu, queues, recording and integrations you need. * Ask how 911 works for remote users and how they update their address. * Try the apps on the phones your team actually uses. * Ask about uptime commitments and how outages are reported. * Ask how numbers are ported in, and confirm you can port them out later. * Get a line-item quote including taxes and fees at your address. ## Switching from an on-site PBX: a checklist * Inventory every number, extension, menu, ring group and voicemail box. * List devices on your phone lines that aren't phones: fax, alarm, elevator, door entry, card terminals. * Test your internet at busy times; plan a backup connection if calls are critical. * Rebuild menus and groups in the new system before porting anything. * Port numbers with an exact copy of your current bill; keep the old service active until the port completes. * Train staff on transfers and voicemail in the new app. * Call in from outside after cutover and test every path, including after hours. Our [porting guide](https://chargezen.com/blog/how-to-port-a-phone-number) covers the number move in detail. ## Example: a 10-person office on a hosted PBX A small distributor has a front desk, a four-person sales team, three people in support and two in the warehouse. A typical hosted PBX setup looks like this: * The main number plays a short menu: 1 for sales, 2 for an order already placed, 0 for the front desk. * Sales is a ring group: all four phones ring together, and the first to answer takes it. * Support is a queue: callers hold with music and hear their place in line; after five minutes they can leave a voicemail that emails the team. * The warehouse has a desk phone with an extension, so the front desk can transfer a driver's call there. * After 5 p.m. the menu changes to a message with the business hours and a voicemail box. * Everyone has the app on their phone, so the sales team can answer from the road. That is the strength of a PBX: it routes calls between people who are ready to answer them. The weak spot is the same in every setup: when everyone is busy or the office is closed, the caller gets a queue or a voicemail box. ## Features worth paying for, and ones to skip | Usually worth it | Often unused | | --- | --- | | Apps for every user, so calls follow people | Paging and intercom, unless you have a warehouse or shop floor | | Call recording, with a notice | Wallboards, unless you run a queue all day | | A simple menu with two or three choices | Deep menus with several levels | | Voicemail transcription to email | A desk phone on every desk | | Integration with your CRM or help desk | Fax lines, unless a customer or supplier still needs them | A rule of thumb, not a rule. Start with what your callers need. If you record calls, check the consent rules first; our [call recording consent guide](https://chargezen.com/blog/call-recording-consent) covers them. ## How Chargezen helps Chargezen is not a PBX. It doesn't do extensions, phone menus or ring groups. It solves a different problem: making sure the calls and texts on your business number are answered, then bringing a person in when it matters. * **One US number for calls and texts**: Get a toll-free or local US number in Chargezen, search open numbers by area code on [phone numbers](https://chargezen.com/phone-numbers), or [bring the number you already have](https://chargezen.com/concierge/features/bring-your-number). Chargezen files the carrier registration texting needs. See [a business phone number](https://chargezen.com/concierge/features/business-phone-number). * **Concierge answers every call and text**: Day and night, with the opening line you write, answering from the information you give it. It recognizes returning callers by their number. See the [AI receptionist](https://chargezen.com/concierge/use-cases/ai-receptionist) and the [phone channel](https://chargezen.com/concierge/channels/phone). * **Teammates join from Finn or the browser**: When a customer needs a person, Concierge alerts your team in the Finn app and the browser, and emails or texts the teammates you pick. Listen in with your microphone off, tap Join the call, and Concierge tells the caller you're there. From the Finn app on iPhone or Mac you can transfer the call to a teammate, with a note. See [phone calls](https://chargezen.com/concierge/features/phone-calls). * **One thread per customer**: Calls, texts and the rest of the customer's history sit together in the [team inbox](https://chargezen.com/smartytap/team-inbox), so whoever picks up next can see what was said. To be plain about what Chargezen is not: it doesn't sell VoIP lines, desk phones or a PBX. It has no extensions, phone menu, ring groups, call forwarding, simultaneous ring or business-hours routing, and it offers US (+1) numbers only. If you need those, buy a phone system built for them. Chargezen answers the calls and texts on your business number, and your team works the same conversations from there. **When a hosted PBX is the better fit:** if you have people at desks answering all day and want calls routed between them by menu, group and schedule, buy a hosted PBX. Chargezen fits teams that want every call answered right away, and their own people joining the calls that need them. Concierge Starter is $20 a month with 20,000 credits. Pro is $199 a month with 199,000 credits, or $1,990 a year. Phone and text charges are billed as used, with no per-user fees. See [pricing](https://chargezen.com/pricing). Related terms: [IVR](https://chargezen.com/glossary/ivr-interactive-voice-response), [warm transfer](https://chargezen.com/glossary/warm-transfer) and [VoIP](https://chargezen.com/glossary/voip-voice-over-internet-protocol). Related guides: [what VoIP is](https://chargezen.com/blog/what-is-voip), [what a softphone is](https://chargezen.com/blog/what-is-a-softphone) and [how to share one business number with your team](https://chargezen.com/blog/share-business-phone-number). ## Frequently asked questions ## Is a hosted PBX the same as VoIP? A hosted PBX is a phone system that uses VoIP. VoIP is how the calls travel; the PBX is the set of features (extensions, menus, groups) on top. ## What is a PABX? An older name for a PBX with automatic switching. Today the two terms mean the same thing. ## Do I need desk phones for a hosted PBX? No. Most hosted systems work through computer and phone apps. Desk phones are optional. ## Can I keep my old desk phones? Sometimes. Many providers support common SIP desk phones; older digital phones tied to a specific PBX brand usually won't work. Ask the provider for its supported device list. ![Jerry Abrahamson](https://chargezen.com/assets/blogpost2.32f70dbd.png) Written by ### Jerry Abrahamson Jerry is the Founder and CEO of Chargezen, helping brands build sustainable omni-channel businesses. With over 10 years of experience in omni-channel commerce and SaaS, he's passionate about helping brands create recurring revenue streams. [](https://twitter.com/chargezenjerry)[](https://linkedin.com/in/jerry-a) ## Related Articles [ ![What Is VoIP? A Plain-English Guide for Small Businesses](https://chargezen.com/og-default.png) DTC Strategy · 8 min read ### What Is VoIP? 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