Top 7 Hosted PBX Providers for Enterprise in 2025
Managing business communications across countries, teams, and time zones shouldn’t be a constant juggling act. If you’re still relying on outdated phone systems—or patching together tools that weren’t built to scale—you’re likely wasting time, money, and energy.
Hosted PBX solutions are cloud-based systems that offer enterprise-grade call management, built-in flexibility, and the reliability distributed teams need, without the hassle of on-premise hardware.
This guide highlights 2025's top hosted PBX providers, broken down by features, potential drawbacks, and reasons each is worth considering.
What is a hosted PBX?
A hosted PBX, or Private Branch Exchange, is a cloud-based phone system that lets businesses manage calls without on-site infrastructure. Instead of maintaining your own servers, your provider handles everything from routing to updates in the cloud.
Hosted PBX is a type of virtual PBX, a broader term for an internet-based phone system. It’s sometimes called cloud PBX, especially when built on modern cloud platforms like AWS or Azure.
Related: Hosted PBX vs. VoIP vs. SIP Trunking
Hosted PBX vs. traditional phone systems
Manufacturers built traditional or on-premise PBX phone systems for single-location offices using desk phones hardwired to on-site servers. That setup can slow you down in today’s world of remote teams, global customers, and flexible work.
A cloud-hosted PBX system offers a smarter alternative. Since it runs in the cloud, it requires no physical hardware, giving your team access to advanced call features from anywhere.
| Setup | Fully cloud-based, no hardware needed | On-site PBX hardware and desk phones required |
| Scalability | Add users, numbers, or locations instantly | Requires physical upgrades and wiring changes |
| Maintenance | Managed by the provider | Requires in-house IT or third-party support |
| Cost structure | Subscription-based, predictable pricing | High upfront costs and ongoing maintenance |
| Remote access | Accessible from anywhere with internet | Tied to a physical office location |
| Feature updates | Delivered automatically by the provider | Manual, often delayed |
| Security and compliance | Includes encryption and role-based controls | Relies on local security measures |
How does hosted PBX work?
Hosted PBX runs entirely in the cloud. Instead of routing incoming calls through physical phone lines and on-site equipment, your provider’s servers handle everything over the internet.
When someone calls your business number, the provider routes the call based on your settings, whether to a desk phone, a softphone app, or a mobile device. As long as your team has a stable internet connection, they can make and take calls from anywhere. You can set up call forwarding, voicemail, auto attendants, and analytics—all from a central web-based dashboard.
Top 7 hosted PBX providers
Different hosted PBX providers offer different strengths. Some prioritize global number coverage, while others focus on all-in-one communication or ease of use.
Choosing the right provider depends on your business size, technical needs, and the locations of your teams and customers.
| AVOXI | Global number provisioning, smart call routing, CCaaS and UCaaS integrations | Enterprises with international teams |
| 8x8 | Unified communications, AI-powered analytics, global calling plans | Mid-size to large businesses |
| Nextiva | Call flow builder, team messaging, mobile apps | Businesses prioritizing ease of use and support |
| RingCentral | Advanced call handling, robust integrations, admin analytics | Growing teams with complex workflows |
| Vonage | Unified communications, app marketplace, call monitoring tools | SMBs scaling into mid-market |
| GoTo Connect | Visual dial plan editor, built-in meetings, cloud admin tools | Smaller teams seeking a simple Voice over Internet Protocol (VoIP) service |
| Zoom Phone | BYOC support, global coverage, Zoom meeting integration | Remote teams already using Zoom |
1. AVOXI
AVOXI is a cloud-native voice platform built for enterprises that need global calling, flexible integrations, and consistent call quality. It’s especially useful for companies with distributed teams and international operations.
Features:
- Virtual number provisioning: Activate local, toll-free, and international numbers in over 150 countries.
- Smart call routing: Route calls based on language, location, or time of day.
- Real-time call analytics: Track call quality, agent activity, and performance in one dashboard.
- Contact Center and Unified Communications as a Service (CCaaS and UCaaS) integrations: Connect with tools like Microsoft Teams, Zoom, and Genesys.
Cons:
- Requires onboarding for full setup
- Full feature set may require time to configure effectively
2. 8x8
8x8 offers a comprehensive cloud communications suite with voice, video, chat, and contact center tools, making it a solid choice for mid-size to large enterprises looking for an all-in-one system.
Features:
- Unified communication tools: Combine voice, video, messaging, and conferencing.
- AI-powered analytics: Monitor performance, customer interactions, and quality scores.
- Customer relationship management (CRM) integrations: Sync with Salesforce, HubSpot, and Microsoft Dynamics 365.
Cons:
- Interface feels outdated in places
- Reporting can be difficult to customize
3. Nextiva
Nextiva delivers a simple, reliable cloud phone system aimed at businesses that value ease of use, responsive support, and built-in collaboration tools.
Features:
- Call flow automation: Create custom call routing with a visual drag-and-drop builder.
- Built-in team messaging: Chat internally without switching platforms.
- Video and voice conferencing: Run meetings directly from one interface.
Cons:
- Limited international number availability
- Costs add up with feature upgrades
4. RingCentral
RingCentral is one of the most recognized names in cloud telephony, offering a mature platform with robust functionality for enterprise communication and collaboration.
Features:
- Advanced call handling: Access call forwarding, hold music, voicemail-to-text, and call flip.
- Extensive integrations: Connect with Salesforce, Google Workspace, Microsoft 365, and more.
- Admin-level analytics: Track user activity, call volumes, and performance metrics.
Cons:
- Some advanced features locked in higher-tier plans
- Can be overwhelming to configure
5. Vonage
For businesses scaling from small to enterprise, Vonage Business Communications delivers a flexible cloud phone system with customizable features and easy integrations.
Features:
- Unified communication tools: Combine voice, SMS, team chat, and video conferencing.
- Call monitoring tools: Let supervisors join, whisper, or listen in on live calls.
- APIs for customization: Build tailored workflows and voice applications.
Cons:
- Updates can temporarily affect performance
- Not built for large-scale international deployment
6. GoTo Connect
GoTo Connect (formerly Jive) combines cloud-based voice and video tools into one platform, making it a good fit for small to mid-size teams that need an all-in-one solution.
Features:
- Visual dial plan editor: Build and manage call flows using a drag-and-drop interface.
- Cloud-based admin portal: Manage users, devices, and settings from anywhere.
- Built-in video meetings: Host or join video calls directly from the platform.
Cons:
- Limited features for larger enterprises
- Varied support response times
7. Zoom Phone
Zoom Phone extends the familiar Zoom interface into a cloud-based phone system, making it practical for remote teams already using Zoom for meetings.
Features:
- Bring Your Own Carrier (BYOC): Use existing telecom contracts while leveraging Zoom’s platform.
- Global phone number support: Access coverage in 40+ countries.
- Call and meeting integration: Switch between phone calls and Zoom meetings.
Cons:
- Lacks advanced PBX capabilities
- Extra features raise costs fast
5 features to look for when choosing a hosted PBX provider
The hosted PBX market is expected to grow at a compound annual growth rate (CAGR) of 17.1% from 2025 to 2033. With so many options on the market, the need to choose wisely is greater than ever.
These are the must-have features your PBX system should provide:
1. Unified communications features
Your provider should combine calling, messaging, video, and file sharing in one place. This keeps your team connected without multiple apps and makes onboarding easier for new hires.
2. Global scalability
If your business operates across borders—or plans to—make sure your provider offers local, toll-free, and international numbers. They should also support local caller ID and follow regional telecom rules.
3. Enterprise-grade security
Your phone system must protect your data. Look for security features like call encryption, user permissions, and secure logins. If you’re in a regulated industry, ensure they follow standards like the Health Insurance Portability and Accountability Act (HIPAA) or the General Data Protection Regulation (GDPR).
4. Call automation and routing tools
You want calls to go to the right person without delays. Interactive Voice Response (IVR) menus, call queues, voicemail-to-email, and smart routing by time or location help teams stay efficient and your customers feel heard.
5. Integrations with your current tools
Your PBX system should work well with the tools you already use, including your CRM, helpdesk, or messaging apps. This saves time and reduces errors by syncing everything without extra work.
How to select the right cloud PBX provider
The next step is finding a service provider that’s the ideal match. Here’s how to make the right choice:
1. Assess your coverage needs
Identify where you need local, toll-free, or international numbers, then choose a provider that supports those regions.
Ask yourself:
- Where are my customers, teams, or vendors?
- Do I need a local presence in multiple countries or just a few key regions?
- Will I need toll-free numbers, vanity numbers, or SMS-enabled lines?
- Is number porting from my current provider available in those areas?
- Are there local compliance requirements?
2. Match features to business goals
Not every feature matters. Choose tools that solve your actual challenges.
- If you handle a lot of calls, go for smart routing and call monitoring.
- If you’re remote-first, you’ll need strong mobile and video options.
- If you work in healthcare or finance, security and compliance are priorities.
To avoid overpaying for unused extras, clarify what you want to improve, then shortlist the providers with the features you need.
3. Verify reliability
Look for a provider that guarantees uptime (ideally 99.99%), has solid call quality, and is upfront about disaster recovery plans. You don’t want surprises when something goes wrong.
4. Check integration compatibility
Make a checklist of the tools your team is using—CRMs, helpdesks, calendars, and messaging apps. Then, check whether each provider supports native integrations or open APIs to avoid siloed systems or manual work.
5. Evaluate security and compliance
Confirm that the provider offers call encryption, single sign-on (SSO), and access controls. Ask how they handle data residency and ensure they comply with industry-specific regulations [e.g., HIPAA, GDPR, Payment Card Industry Data Security Standard (PCI-DSS)].
6. Test support and onboarding
Before you commit, engage your sales or support team with real-world questions. Evaluate how fast and helpful the responses are.
Some providers offer onboarding sessions. Take advantage of these to understand the system setup and training options.
Fortify your business communication with the best hosted PBX
Hosted PBX phone systems take the complexity out of managing enterprise communications. With the right provider, you get flexibility, reliability, and scalability without worrying about physical infrastructure or costly downtime.
If you're looking for a solution purpose-built for global teams—with strong enterprise features and real support—AVOXI stands out.
Schedule a demo to see how AVOXI compares and how it can support your business communication strategy at scale.
Commonly Asked Hosted PBX Providers Questions
Yes. Top-tier providers, such as AVOXI, offer 99.99% uptime service level agreements (SLAs), geo-redundant infrastructure, and real-time monitoring to ensure stable and secure service.
Efficient International Phone Number Porting to AVOXI
International number porting is a great way to save costs and ensure brand consistency as you scale your business. And with a trusted team of experts to support your needs, the porting process should be quick and streamlined.
As you continue to research porting for your contact centers, our webinar Optimizing Your International Number Porting Strategy can help you gain a deeper understanding of the porting process tailored to grow your operations.
