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A virtual phone system is a cloud-based business calling service that sends calls over the internet instead of traditional phone lines. It lets a business manage calls, messages, and often video from apps or supported desk phones.
Virtual phone numbers give customers a way to reach your business across supported devices. Before switching, map how your team answers, transfers, and returns calls. That helps you avoid paying for unused features or overlooking routing, reporting, and support needs.
A report listed by Research and Markets estimates the global virtual phone number for business market at $1.93 billion in 2026, up from $1.76 billion in 2025. The report points to demand for business numbers that are not tied to one physical phone line.
Cloud-based systems can reduce on-site equipment needs and help teams manage calls across locations. This guide explains how virtual phone systems work, the main system types, features to assess, limitations to plan for, and practical buying criteria.
What Is a Virtual Phone System?
Employees can make and receive calls through an app or supported IP phone, rather than a phone line connected to an on-site PBX.
Many systems also support business texting, video meetings, voicemail, call routing, and analytics. A business can use one phone number across supported laptops, tablets, smartphones, and desk phones.
A virtual phone system turns business calling into software managed through a provider’s platform. It can support a solo business, a distributed team, or a company with multiple locations.
Virtual Phone System vs. Virtual Phone, Software, and Other Phone Systems
The terms virtual phone system, virtual phone, and computer phone system describe related parts of a calling setup. One term may describe the complete service, while another describes the number, app, or device used to make calls.
What are phone systems?
Phone systems are the services and equipment businesses use to manage incoming, outgoing, and internal calls. They can use traditional phone lines, an on-site PBX, or a hosted internet-based service.
A business may use its phone system to assign employee extensions, direct callers to sales or support, and send unanswered calls to voicemail. A virtual phone system handles these tasks through a hosted platform instead of a PBX maintained on-site.
What is a computer phone system?
A computer phone system lets employees make and receive calls through compatible calling software on an internet-connected computer. It usually combines a business calling service, a desktop or browser-based softphone, and a microphone or headset.
This setup works well for employees who spend most of the day at a computer. A sales representative can call customers from a desktop app, while a support agent handles calls alongside customer records.
What is a virtual phone?
A virtual phone usually refers to a software-based phone, also called a softphone, that makes and receives calls through an internet-connected device. Some providers use the term for a virtual calling service, while a virtual phone number is the number assigned to that service.
A business number alone does not confirm whether a service includes employee extensions, call queues, transfers, or other calling features.
What is virtual phone software?
Virtual phone software is the application employees use to access an internet-based calling service. It provides an interface for making and answering calls and may include voicemail, transfers, business texting, and customer information.
The software connects employees to the phone system. It does not always include the calling subscription. Check which apps, devices, and licenses the provider supports before choosing a plan.
| Term | What to check | Example |
|---|---|---|
| Phone system | Call capacity, routing options, equipment requirements, and total cost | A company directing customer calls to sales or support |
| Virtual phone system | Internet requirements, remote access, and options for handling calls during an outage | A business routing incoming calls to employees working remotely |
| Computer phone system | Computer compatibility, headset support, and access to calling features | A sales representative calling customers through a desktop app |
| Virtual phone | Number availability, supported devices, and whether you can keep an existing business number | An employee using the same business number on a laptop and smartphone |
| Virtual phone software | Ease of use, voicemail access, call transfers, and integration with other business tools | An app for answering calls, checking voicemail, and transferring callers |
How a Virtual Phone System Works
A virtual phone system uses a provider’s hosted platform to connect calls and apply your business’s routing rules. When employees speak through an app or IP phone, VoIP converts their voices into digital data that travels over an IP network.
What is a virtual call?
A virtual call is a voice or video conversation carried over the internet. Within a virtual phone system, it usually means a VoIP voice call made through an app or IP phone, including calls to customers using regular mobile phones or landlines.
How the call reaches its destination
When someone calls your business number, the provider follows the rules you’ve configured. It might play an auto-attendant greeting, ring a group of employees, or send the caller to voicemail outside business hours.
Once the call connects, your app or IP phone converts speech into digital packets. The receiving device converts those packets back into audio. Calls to regular telephone numbers also connect through the telephone network, so customers don’t need your business’s app to speak with you.
Watch: See how a virtual phone system moves your office to the cloud.
Three components make this work:
- Your internet connection: Nextiva’s bandwidth guidance specifies 100 Kbps of upload and download capacity per simultaneous standard-quality call. Leave capacity for other traffic and check latency, jitter, and packet loss too.
- The cloud service: Your provider handles call processing, number management, and feature delivery. You manage the settings without maintaining an on-site phone server.
- The app or device: A desktop softphone, mobile app, or supported IP desk phone connects employees to the same service.
Your business number stays with your account when you move offices or add locations. Check service availability and update emergency-location settings when employees change where they work.
Types of Virtual Phone Systems
Businesses can use a software-only setup, a cloud PBX, or a hybrid system. These categories overlap: a softphone is often the app employees use to access a cloud PBX.
1. Softphone-only (desktop apps)
These systems use software instead of desk phones or special hardware. Softphones run on a PC, Mac, or smartphone and use an internet connection through Ethernet, Wi-Fi, or mobile data.
A softphone-only setup can suit solopreneurs, freelancers, and remote startups that want business calling without shipping hardware. Call quality depends on the local internet connection, and mobile use also depends on the device battery and data connection.
2. Cloud PBX (hosted VoIP)
A hosted PBX provides business phone functions through the cloud. It can include hold music, call queues, direct dialing, extensions, and routing rules without requiring the business to host the PBX server on-site.
Cloud PBX services may support Android and iOS mobile apps, desktop software, and physical IP desk phones. This setup can suit businesses that need reception routing, departments, shared call coverage, or structured call flows.
3. Hybrid phone systems
A hybrid system combines on-premises phone equipment with cloud services. A business may keep its existing PBX server and connect it to the internet through SIP trunking.
This approach can help organizations transition from legacy hardware over time. It may also suit businesses with existing equipment investments or internal policies that require more direct control over parts of their voice setup. The business still needs to manage the on-premises equipment and its associated costs.
Key Features of a Virtual Phone System
A virtual phone system can provide more than internet calling. Review each provider’s plan details because features, limits, and add-ons vary.
Call management and routing
An auto-attendant answers calls and directs callers using menu options, such as “Press 1 for Sales” or “Press 2 for Support.” You can also set separate routing rules for business hours and after-hours calls.
Advanced call forwarding, sometimes called Find Me/Follow Me, can ring devices in a set order. For example, the system can try a desk phone first, then a mobile phone, then a home-office phone.
Call queues hold callers while employees are busy. Queue messages, hold music, staffing levels, and routing rules all affect caller wait times and abandoned calls.
Communication beyond voice
Many virtual phone systems include business SMS, video conferencing, and team messaging in one app or suite of apps. Supported plans may let employees text clients from a business number, join video meetings, and review team messages.
Voicemail-to-email transcription converts voicemail into text and sends it to an inbox. Check transcription accuracy, language support, storage limits, and plan availability before relying on it.
AI tools
Some providers include AI tools in higher-tier plans or sell them as add-ons. Common examples include:
- Call summaries: AI creates a recap and possible action items after a call.
- Sentiment analysis: Managers can review indicators of customer sentiment across conversations.
- Automated coaching: The system identifies patterns, such as frequent interruptions, for supervisors to review during training.
Check how the provider handles call recordings, transcripts, and other call data. Review AI-generated notes before using them as the record of a customer conversation.
Integrations and analytics
Virtual phone software may connect with CRM tools such as Salesforce and HubSpot. Depending on the integration, a customer’s account history can appear when they call.
Real-time analytics dashboards can track call volume, wait times, and missed calls. Confirm which metrics are available in your plan and whether reporting requires an add-on.
Virtual Phone System vs. Traditional PBX
If you still have a server room full of cables, you’re probably paying for an outdated on-premises setup. A private branch exchange, or PBX, is the equipment and software a business uses to route internal and external calls. Traditional PBX systems run on-site, while a virtual phone system usually runs on the provider’s hosted infrastructure.
| Feature | Virtual phone system | Traditional PBX |
|---|---|---|
| Setup cost | Often lower upfront because the provider hosts the core system | Often includes servers, phones, and professional installation |
| Maintenance | Provider manages the hosted platform | Business manages equipment or pays for maintenance support |
| Scalability | Administrators can often add users through a portal | New capacity may require hardware, line cards, or technician work |
| Location flexibility | Employees can use supported devices with an internet connection | Often centers on the physical office, though remote options may be available |
| AI features | Some providers include transcription, analysis, or coaching tools | May require separate tools or integrations |
| Disaster recovery | Provider infrastructure and configured call forwarding can support continuity planning | Local power, equipment, and network outages can affect service |
On-premises systems may involve maintenance contracts, equipment replacement, power costs, and IT time. Hosted systems move much of that spending into a subscription, though hardware, add-ons, international calls, and usage fees can still increase the bill.
An on-premises PBX can suit a business that needs direct control over its equipment and data handling. Compare those requirements with each provider’s hosting locations, security controls, service terms, and support model.
Benefits of a Virtual Phone System
Why do businesses use virtual calls? They keep employees reachable through business numbers, whether they work in the office, remotely, or on the move. A virtual phone system also brings call routing and shared coverage into one place, without requiring an on-site phone server.
Here are the benefits of virtual phone calling through a virtual phone system:
1. Instant scalability
Previously, growth meant hiring a technician to lay new cables. With a virtual phone system, adding a new sales representative or opening a new branch is just a few clicks away in the web portal. You can scale from 5 to 5,000 users without having to buy a single server.
2. Unified communication
Why pay for separate apps for video conferencing, team chats, and SMS? VoIP phone services like NextivaONE combine all these functions into a unified, all-in-one user interface. Your employees no longer need to switch between apps and can instead focus entirely on what matters most.
3. Advanced AI & analytics
The biggest change has been the integration of the following AI features (and more) into virtual phones. Call reports give managers a view of demand, wait times, and missed calls. Where included, transcription and AI summaries reduce manual note-taking, while coaching tools give supervisors material to review with agents.
4. Privacy & professionalism
A virtual app allows your employees to make calls from personal devices, displaying their business caller ID. This protects your employees’ privacy while maintaining control over customer relationships.
5. High reliability
Traditional systems fail during unexpected events. Leading virtual phone system providers (like Nextiva) use geo-redundant data centers. If one server fails, traffic is immediately rerouted to another, ensuring your business operations continue smoothly.
6. Cost efficiency
On-premises systems incur hidden costs, including maintenance contracts, server room cooling costs, and long-distance call charges. Virtual systems offer flat rates including unlimited calls to the US and Canada, reducing telecommunications costs.
7. Seamless CRM Integrations
Your phone system should be compatible with your other business software. Virtual phone systems integrate with Salesforce, HubSpot, and Microsoft Teams, so that when a customer calls, their account details appear instantly on the screen.
Virtual Phone Providers and Buying Considerations
Providers differ in their target customers, plan structure, international coverage, and available features. Evaluate the current plan details for each service before making a decision.
- Nextiva: Nextiva, a business communications provider, offers business phone service and unified communications tools. Review its unified communications platform options for voice, video, CRM-related features, and AI tools.
- RingCentral: RingCentral has business calling and global service options. Businesses with international locations should review country availability, local number support, and administration requirements.
- Zoom Phone: Zoom Phone may suit teams that already use Zoom for meetings. Confirm the call-routing, contact center, and integration features required for your workflow.
- Grasshopper: Grasshopper focuses on business calling features for smaller teams. Compare its available calling, texting, team collaboration, and video capabilities with your requirements.
Virtual phone providers at a glance
| Provider | May suit | Starting price | Feature to assess |
|---|---|---|---|
| Nextiva | Small to mid-sized businesses | $15/user/month with annual billing | Voice, video, CRM-related features, and available AI tools |
| RingCentral | Businesses with international operations | $20/user/month, billed annually | International calling and country availability |
| Zoom Phone | Video-first teams | $16/user/month for US and Canada Unlimited, billed annually | Zoom calling and meeting workflows |
| Grasshopper | Solopreneurs | From $14/month, billed annually | Business calling, texting, and voicemail |
Starting prices reflect annual billing as listed in the draft. Plans, features, taxes, fees, and add-ons can change. Confirm current pricing and feature availability directly with each provider.
Key considerations before you buy
- Reliability: Ask about service availability, redundancy, outage communications, and call-forwarding options. A 99.999% uptime target equals less than six minutes of downtime per year, but confirm whether the provider makes that commitment and what it covers.
- Support: Test the available support channels before signing a contract. Ask about support hours, escalation paths, onboarding help, and charges for implementation support.
- Scalability: Ask what changes when you add users, locations, phone numbers, or a contact center plan. Include migration work, licensing, and setup fees in your evaluation.
- Total cost: Include required phones, recording, CRM integrations, international calls, SMS, and other add-ons in your comparison.
- Security and compliance: Review encryption, multifactor authentication, access controls, audit logs, retention settings, and the provider’s support for your regulatory requirements.
- Network readiness: Test bandwidth, latency, jitter, packet loss, Wi-Fi coverage, and firewall settings before rollout.
How to Set Up a Virtual Phone System in 4 Steps
With a cloud-based phone service, you can set up your virtual phone system quickly and in a few simple steps. The time required depends on your setup, number porting, and any equipment or network changes.
1. Choose your numbers
Log in to the admin portal and select your new local number or toll-free numbers. If you want to keep your existing business numbers, start the number porting process immediately. Ask your provider to confirm number eligibility, required documents, and the expected porting date. Keep your existing service active until the transfer completes.
2. Add users and extensions
Create profiles for your team members (e.g., “Sarah – Extension 105”). Send invitations using the provider’s onboarding process and assign the permissions each employee needs. Confirm which business number employees should use for outgoing calls.
3. Create your call flow
This is the path a call takes through your system.
- During business hours: Forwarding to the sales team (all sales representatives are called simultaneously).
- When employees are busy: Place callers in a queue or send calls to another available employee.
- Outside business hours: Forwarding to an automated answering system.
Set rules for unanswered calls so callers have a next step when the first destination is unavailable.
4. Download and get started
Have your team download the mobile app and desktop software. If you’ve opted for desk phones, check compatibility and follow the provider’s provisioning instructions. Confirm the required power, network, and firewall settings.
Before launch, test incoming and outgoing calls, transfers, voicemail, after-hours routing, and backup arrangements. Follow the provider’s instructions for emergency-location settings.
Troubleshooting Common Virtual Phone Issues
Start by checking whether the issue affects one device, one location, or the whole team. That narrows down where to test next. Here are the three most common issues and how to fix them quickly:
- Choppy audio (jitter): This is usually caused by an unstable internet connection.
Fix: Switch from Wi-Fi to a wired Ethernet connection or enable Quality of Service (QoS) on your router to prioritize voice traffic. - Dropped calls: Check connectivity and firewall settings.
Fix: Ask your IT team to follow your provider’s guidance on required IP addresses, ports, and SIP ALG settings. - Echo on the line: Caused by feedback loops between a microphone and speaker.
Fix: Ensure your volume isn’t too loud and ask your team to use headsets instead of speakerphone.
Nextiva Virtual Phone System Plans
Nextiva, a business communications provider, has business phone plans for teams with different calling and collaboration needs. Compare plan details, user requirements, and add-ons before selecting a service.
Here’s how Nextiva business phone plans help you get started:
- Core plan: Perfect for small teams needing essential voice, video, and business SMS.
- Engage plan: Ideal for growing businesses, adding toll-free numbers and advanced voice analytics.
- Scale: The ultimate tool for customer experience. It unifies voice, web chat, and AI-powered transcription into a single view.
Compare Nextiva Business Phone System plans to choose the calling tools your team needs and discuss your setup with Nextiva.
See how Nextiva’s VoIP phone system works for your team
Find out why businesses across the country have already made the switch.
FAQs
We’ve answered the most common questions about virtual phone systems below.
Pricing depends on the provider, user count, billing term, and included features. Nextiva lists Core at $15, Engage at $25, and Scale at $75 per user per month with annual terms. Hardware, add-ons, taxes, and usage charges can increase the total, so compare the full cost before choosing a plan.
Calling apps and IP phones need an internet connection, but configured forwarding or failover rules may keep incoming calls reaching mobile numbers or another location. Employees can also use supported apps through mobile data or a backup internet connection. Set up and test these arrangements before an outage.
Compare the financial benefits with the total cost of implementation and ongoing service. Include subscriptions, equipment, training, and add-ons, then measure savings from reduced maintenance or replacing other tools.
Track missed calls, answer times, and lead conversions alongside CRM outcomes. Calculate ROI as (net financial benefit ÷ total investment) × 100, using the same reporting period and counting only benefits you can reasonably attribute to the switch.
Test the new system on temporary numbers while keeping your existing service active. Check incoming and outgoing calls, transfers, voicemail, business-hour rules, and after-hours routing before your primary numbers transfer.
Confirm the porting date, assign someone to manage the cutover, and prepare a backup contact method. Test your primary numbers immediately after the transfer and resolve any routing issues before canceling the old service.
In many cases, yes. Number porting depends on the number type, service area, and whether the new provider supports it. Ask the new provider to confirm eligibility and required documents. Keep your existing service active until the transfer completes, then test incoming and outgoing calls.
Many providers support call recording, though features and storage limits vary by plan. Check for automatic or on-demand recording, pause and resume controls, and recording announcements.
Consent requirements vary by jurisdiction and may depend on where participants are located. Confirm the applicable rules and obtain any required consent before recording; an announcement alone may not be sufficient. Document who can access recordings, how long you retain them, and when you delete them.
