Best IP Phone Systems for Businesses: Features, Costs and Providers
Traditional landline systems can be expensive and difficult to scale, especially for growing businesses with remote a team collaboration platform and multiple locations.
IP phone systems offer a more flexible alternative. By routing calls over the internet instead of the traditional Public Switched Telephone Network (PSTN), they can help businesses reduce costs, support remote work, and access advanced calling features like auto attendants, call routing, voicemail, analytics, and app-based calling.
But not every IP phone system works the same way. Some are cloud-based and easy to manage, while others use on-premise or hybrid infrastructure for more control. This guide compares the best IP phone systems for businesses and explains how to choose the right one based on your size, setup, budget, and communication needs.
Best IP Phone Systems at a Glance
Before we dive deeper into each provider, here is a quick comparison of the top options on the market.
Cytranet is best suited for SMBs and growing a team collaboration platform, uses cloud-based deployment, starts at $15 per user per month, and is known for easy all-in-one business communication, though it may be more platform than very small a team collaboration platform need. a business communications provider is best for businesses wanting on-premise or hybrid control, supports on-premise, private cloud, and hybrid deployment, requires contacting sales for pricing, and offers an established IP PBX and UC system, though it is more complex than modern cloud-first tools. a unified communications platform is best for UCaaS-focused a team collaboration platform, is cloud-based, starts at $20 per user per month, and offers a mature calling, messaging, and meetings platform, though advanced features can raise costs. a VoIP service provider Office is best for small businesses, is cloud-based, starts at $19.95 per user per month, and offers a simple and affordable setup, though it has less enterprise depth. 3CX is best for IT-led a team collaboration platform, supports cloud-hosted, self-hosted, and on-premise deployment, starts at $350 per year, and offers a flexible SIP-based PBX, though it requires more technical management. Yeastar is best for SMBs wanting PBX flexibility, supports cloud and on-premise deployment, requires contacting sales for pricing, and offers strong IP PBX options, though it is less recognizable than larger UCaaS brands. a virtual phone system is best for solopreneurs and small a team collaboration platform, is a cloud-based virtual phone system, starts at $14 per month, and offers a simple business number and call forwarding setup, though it is too limited for a team collaboration platform that need full UCaaS or IP PBX control. a cloud-based phone service is best for existing a video conferencing platform users, is cloud-based, starts at $10 per user per month, and is an easy add-on for a video conferencing platform-centric a team collaboration platform, though it has less traditional PBX depth. a cloud communications provider is best for businesses needing APIs and voice, is cloud-based, starts at $13.99 per user per month, and combines voice with communication APIs, though pricing and features may require closer review. a global unified communications platform is best for global or multi-location a team collaboration platform, is cloud-based, requires contacting sales for pricing, and offers voice, video, messaging, and contact center capabilities, though it may be more than smaller a team collaboration platform need.
What Is an IP Phone System?
An IP phone system is a business phone system that uses internet protocol technology to make, receive, route, and manage calls instead of relying on traditional copper phone lines.
In plain terms, it lets businesses handle phone calls through an internet connection or private IP network rather than the traditional Public Switched Telephone Network. Instead of sending voice signals through legacy landlines, an IP phone system converts voice into digital data packets and sends them across a network.
An IP phone system can include IP desk phones that look like traditional office phones but connect through Ethernet or Wi-Fi, softphones and mobile apps that let employees make business calls from computers or smartphones, call routing, voicemail, caller ID, call forwarding, and extensions, auto attendants or IVR menus, and video calling, SMS, team messaging, analytics, and CRM integrations depending on the provider.
IP phone systems are closely related to VoIP phone systems, and in many business contexts the terms are used almost interchangeably. The difference is that VoIP refers to the technology that transmits voice over the internet, while an IP phone system is the broader business setup that uses that technology to manage users, devices, phone numbers, routing rules, and calling features.
Benefits of an IP Phone System
Is it worth scrapping your current phone system in favor of an IP phone system that uses the internet to make calls? Here are six benefits to keep in mind.
Lower set-up and maintenance costs. You usually need less hardware and less IT support than with traditional phone lines. Because the system runs over the internet, upkeep is simpler and often cheaper.
More reliable call handling. If one connection fails, calls can often be forwarded to another device or number. That helps reduce downtime from outages, bad wiring, or hardware problems.
Remote work friendly. IP phone systems make it easy to route business numbers to mobile phones, laptops, or home setups. That makes them a strong fit for distributed a team collaboration platform and virtual contact centers.
Easy to scale. Adding a new user is usually as simple as updating the account and installing the app or handset. You avoid the delays and installation work that come with a traditional phone line.
Better customer experience. Features like call queues and call handling help reduce missed calls and long waits. VoIP-to-VoIP calling can also lower costs for customers and staff.
Smarter call insights. Many modern systems include transcription, summaries, and searchable call records. That makes it easier to review conversations and turn calls into useful business data.
IP Phone System vs. VoIP vs. PBX
IP phone systems, VoIP, and PBX are closely related, but they do not mean exactly the same thing. VoIP is the technology, PBX is the call management system, and an IP phone system is the broader business phone setup that uses internet protocol to handle calls.
An IP phone system is the full setup including users, devices, phone numbers, routing rules, voicemail, and calling features. VoIP, or Voice over Internet Protocol, is the underlying technology that powers many modern business phone systems. A PBX, or Private Branch Exchange, is a system that manages internal and external business calls and can be traditional, IP-based, cloud-hosted, on-premise, or hybrid. An IP PBX is a PBX that uses IP technology and is often used for on-premise or hybrid business phone systems. A cloud PBX is a provider-hosted PBX accessed over the internet and is common in modern cloud-based VoIP phone systems.
How IP phone systems compare to traditional phone systems
Traditional phone systems rely on physical phone lines, legacy PBX hardware, and location-based infrastructure. IP phone systems use an internet connection or private IP network, which makes them more flexible for remote a team collaboration platform, multi-location businesses, and companies that need advanced call management features. The biggest difference is that traditional systems are usually tied to office-based hardware, while IP phone systems can support desk phones, softphones, mobile apps, cloud management, and integrations.
Top 10 IP Phone Systems for Businesses
The best IP phone system for your business depends on whether you need a simple cloud-based phone service, an on-premise IP PBX, or a hybrid setup that supports existing infrastructure.
1. Cytranet
Cytranet is a cloud-based business phone system that combines VoIP calling, messaging, video, analytics, and customer communication tools in one platform. It also offers AI-powered add-ons, including an AI Receptionist feature that can help answer calls, route customers, and reduce manual call handling.
Best for: Small and midsize businesses that want cloud calling, collaboration, and customer communication tools in one platform.
Deployment: Cloud-based.
Key features: VoIP calling, auto attendant, voicemail transcription, call routing, call queues, analytics, SMS, video meetings, mobile and desktop apps, CRM integrations.
Pros: Easy cloud-based setup with mobile, desktop, and browser access. Includes core business calling features like routing, voicemail, SMS, video, and team chat. Can scale beyond phone service with analytics, customer experience tools, and AI add-ons.
Cons: May be more platform than very small a team collaboration platform need. Advanced analytics and AI features can increase costs. Not a fit for businesses that want to manage their own on-premise IP PBX.
Pricing: Starts at $15 per user per month on the Core plan with annual billing. The Engage plan is $25 per user per month and the Power Suite CX plan is $75 per user per month. AI add-ons start at $99 per month.
2. a business communications provider
a business communications provider IP Office is a flexible business communication platform with on-premise, hybrid, private-cloud, and cloud deployment options, while a business communications provider Cloud Office is the cloud-hosted product for calling, messaging, meetings, and collaboration.
Best for: Businesses that want an established IP phone system with flexible deployment options.
Deployment: On-premise, hybrid, or cloud-hosted.
Key features: IP telephony, unified communication, desk phone support, collaboration tools, call management.
Pros: Supports on-premise, hybrid, private-cloud, and cloud deployment options. Strong fit for businesses with existing a business communications provider hardware or infrastructure. Offers more deployment flexibility than cloud-only phone providers.
Cons: More complex to compare and configure than simpler cloud-first VoIP systems. On-premise and hybrid setups may require partner support or internal IT resources. Pricing can be less transparent than providers with standard self-service plans.
Pricing: a business communications provider IP Office is typically quote-based. a business communications provider Cloud Office starts at $20 per user per month on the Core annual plan or $25 per user per month on a monthly basis, with higher tiers ranging from $35 to $40 per user per month.
Read a business communications provider reviews on a software review platform where it holds a 4.5 star rating.
3. a unified communications platform
a unified communications platform a cloud phone service is a cloud-based business phone system combining calling, messaging, video, SMS, and AI-powered communication tools in one app.
Best for: Businesses that want a mature cloud phone system with calling, messaging, video, and AI collaboration tools.
Deployment: Cloud-based.
Key features: VoIP calling, auto attendant, IVR, call routing, voicemail, SMS, team messaging, video meetings, analytics, integrations, AI transcription.
Pros: Combines phone, messaging, video, SMS, and AI features in one platform. Strong call management features including auto attendant, IVR, call queues, and routing. Broad integrations with business tools like a major technology company, a major technology company, a leading CRM platform, a CRM and marketing platform, and a customer service platform.
Cons: May be more expensive than simpler small-business phone systems. Some advanced features, integrations, and higher limits require upper-tier plans. Less suited for businesses that want on-premise or hybrid IP PBX control.
Pricing: Starts at $20 per user per month on the Core annual plan. The Advanced plan is $25 per user per month and the Ultra plan is $35 per user per month.
Read a unified communications platform reviews on a software review platform where it holds a 4.2 star rating.
4. a VoIP service provider Office
a VoIP service provider Office is a cloud-based business phone system built for small businesses, with VoIP calling, a virtual receptionist, extension dialing, call forwarding, voicemail, and mobile access.
Best for: Simple small-business VoIP.
Deployment: Cloud-based.
Key features: VoIP calling, virtual receptionist, call forwarding, voicemail, mobile app, desktop app on higher plans, SMS, video meetings on higher plans, call recording, call queues.
Pros: Simple setup and easy day-to-day administration. Affordable monthly pricing with no long-term contract required. Good fit for small offices, local businesses, and a team collaboration platform replacing basic landlines.
Cons: Less advanced than enterprise UCaaS or contact center platforms. Some useful features like the desktop app, call recording, and video meetings require higher-tier plans. Not ideal for businesses that need deep customization or on-premise IP PBX control.
Pricing: $19.95 per user per month for the Essentials plan, $24.95 for Pro, and $29.95 for Pro Plus. No contract required.
Read a VoIP service provider Office reviews on a software review platform where it holds a 4.6 star rating.
5. 3CX
3CX is a software-based business phone system that can be hosted by 3CX, self-hosted, or deployed on-premise, with annual license pricing based on simultaneous calls rather than per-user monthly fees.
Best for: IT-led businesses that want flexible PBX control without per-user pricing.
Deployment: Cloud-hosted, self-hosted, or on-premise.
Key features: VoIP calling, SIP trunking, call routing, IVR, call queues, video conferencing, live chat, a popular messaging platform, SMS, mobile apps, web client, call recording.
Pros: Flexible deployment options including hosted, self-hosted, and on-premise. Annual pricing model based on simultaneous calls instead of per-user billing. Strong feature set for calling, chat, video, live chat, queues, and remote work.
Cons: Can require more technical setup and management than simpler cloud phone systems. Businesses may need to manage SIP trunks, hosting, phones, or partner support separately. Pricing and plan selection can be harder to compare than standard per-user VoIP plans.
Pricing: Annual licensing starts at $305 per year for the PRO plan with 4 simultaneous calls, or $380 per year for the ENT plan with 4 simultaneous calls. Hosting adds $250 to $850 per year. A free SMB tier supports up to 10 users.
Read 3CX reviews on a software review platform where it holds a 4.4 star rating.
6. Yeastar
Yeastar’s P-Series PBX lineup offers cloud, software, and appliance-based editions for small and midsize businesses needing IP telephony, call management, and unified communications.
Best for: SMBs that want flexible PBX deployment options.
Deployment: Cloud-based, self-hosted, or on-premise appliance.
Key features: VoIP calling, SIP trunking, auto attendant, IVR, call routing, call queues, voicemail, call recording, video conferencing, web, mobile, and desktop clients, CRM integrations.
Pros: Flexible deployment options including cloud, self-hosted software, and on-premise appliances. Strong PBX feature set for SMBs including IVR, queues, call recording, and unified communications tools. Supports bring-your-own SIP trunks and compatible IP phones.
Cons: Can require more technical setup than simpler cloud-only business phone systems. Pricing may vary by edition, deployment, subscription plan, partner, and hardware needs. Less mainstream brand recognition than larger UCaaS providers like a unified communications platform or Cytranet.
Pricing: Pricing varies by edition and deployment. Contact Yeastar or a reseller for a quote. P-Series Appliance hardware starts around $999 for the P550 model.
Read Yeastar reviews on a software review platform where it holds a 4.8 star rating.
7. a virtual phone system
a virtual phone system is a virtual phone system for entrepreneurs and small businesses that want a separate business number with simple call management, texting, voicemail, and extensions without replacing existing phones.
Best for: Solopreneurs and small a team collaboration platform.
Deployment: Cloud-based virtual phone system.
Key features: Business phone numbers, unlimited calling within the US and Canada, business texting, call forwarding, custom greetings, voicemail transcription, extensions, mobile and desktop apps, virtual fax, 24/7 support.
Pros: Simple setup with no desk phone hardware required. Affordable entry point for solo users and very small businesses. Flat-rate plans can be cost-effective for a team collaboration platform that need multiple users or extensions.
Cons: Less robust than full business phone systems like a unified communications platform, Cytranet, or a global unified communications platform. Limited fit for businesses that need advanced call routing, analytics, integrations, or contact center tools. Not designed for on-premise, hybrid, or hardware-based IP PBX environments.
Pricing: Starts at $14 per month for the True Solo annual plan. The Solo Plus plan is $25 per month and the Small Business plan is $80 per month. These are flat-rate plans, not per-user fees.
Read a virtual phone system reviews on a software review platform where it holds a 3.9 star rating.
8. a cloud-based phone service
a cloud-based phone service is a cloud-based VoIP system built into a video conferencing platform Workplace, combining calling, SMS, voicemail, and routing alongside a video conferencing platform’s video, chat, and collaboration tools.
Best for: a team collaboration platform already standardized on a video conferencing platform.
Deployment: Cloud-based with native and bring-your-own-carrier options.
Key features: VoIP calling, SMS, voicemail transcription, call recording, call routing, auto attendants, call queues, desk phone support, mobile and desktop apps, a video conferencing platform Meetings integration.
Pros: Strong fit for businesses already using a video conferencing platform Meetings or a video conferencing platform Workplace. Combines phone, video, chat, SMS, and collaboration tools in one app. Supports compatible desk phones from brands like a VoIP hardware manufacturer, Poly, and a business phone system provider.
Cons: Best value usually comes when paired with the broader a video conferencing platform ecosystem. Advanced needs may require add-ons, higher-tier plans, or careful plan comparison. Less suited for businesses that want full on-premise or hybrid IP PBX infrastructure.
Pricing: $10 per user per month for the US and Canada Metered plan, $15 per user per month for the US and Canada Unlimited annual plan, and $20 per user per month for the Global Select plan.
Read a cloud-based phone service reviews on a software review platform where it holds a 4.6 star rating.
9. a cloud communications provider
a cloud communications provider Business Communications is a cloud-based platform for calling, messaging, video, and collaboration, with additional contact center tools and communications APIs for programmable or customer engagement workflows.
Best for: Businesses wanting cloud calling and programmable communications APIs.
Deployment: Cloud-based.
Key features: VoIP calling, SMS, team messaging, video meetings, mobile and desktop apps, voicemail, call routing, admin portal, CRM integrations, contact center options, communications APIs.
Pros: Combines business phone, messaging, video, and collaboration tools. Stronger API and contact center ecosystem than many basic VoIP providers. Offers integrations with tools like a leading CRM platform, a team collaboration platform, a major technology company Dynamics, and an IT service management platform.
Cons: Add-ons can increase the total monthly cost. Plan and feature comparisons can be less straightforward than simpler VoIP providers. Less relevant for businesses that want on-premise or hybrid IP PBX infrastructure.
Pricing: $13.99 per line per month for the Mobile annual plan, $20.99 for Premium, and $27.99 for Advanced. Standard monthly rates are higher.
Read a cloud communications provider reviews on a software review platform where it holds a 4.3 star rating.
10. a global unified communications platform
A global unified communications platform is a cloud communications platform combining unified communications, contact center, global telephony, video, messaging, and APIs in one AI-powered system.
Best for: Global a team collaboration platform needing UCaaS and contact center capabilities.
Deployment: Cloud-based.
Key features: VoIP calling, team messaging, video meetings, SMS and MMS, call routing, auto attendant, analytics, contact center, workforce engagement, integrations, communications APIs.
Pros: Combines business phone, messaging, video, contact center, and APIs in one platform. Strong fit for multi-location or global businesses with broader communication needs. Offers advanced capabilities across AI, analytics, workforce engagement, integrations, and security.
Cons: May be more complex than small a team collaboration platform need for basic phone service. Public pricing is not transparent, as the current pricing page emphasizes custom packages and quote-based plans. Advanced contact center, AI, workforce engagement, and global calling needs can increase total cost.
Pricing: a global unified communications platform does not publish standard plan prices and instead directs buyers to build a custom plan or request a quote.
Read a global unified communications platform reviews on a software review platform where it holds a 4.1 star rating.
How to Choose the Best IP Phone System
The best IP phone system depends on how your team works, what infrastructure you already have, and which features matter most. Start by narrowing down your deployment model, devices, call management needs, integrations, and security requirements.
1. Choose a deployment model
IP phone systems come in cloud-based, on-premise, and hybrid forms. Cloud systems are easiest to deploy and maintain, on-premise systems give you more control, and hybrid systems combine both approaches. Cloud-based systems are hosted and managed by a provider and offer fast setup, lower upfront cost, remote-friendly access, and easy scalability, though they depend on internet quality and offer less infrastructure control. On-premise systems are installed and managed in your office and give you more control over hardware, configuration, and security, though they come with higher upfront costs and require more IT support. Hybrid systems mix cloud and on-premise components and are good for legacy systems and phased migration, though they are more complex to set up and manage.
2. Decide on devices
Next, decide how employees will make and receive calls. IP desk phones suit offices and shared spaces, while softphones and mobile apps work well for remote and hybrid a team collaboration platform. Many businesses use both.
3. Compare call features
Focus on features that improve call handling and customer experience, such as voicemail, call forwarding, auto attendants, IVR, call routing, queues, caller ID, recording, and analytics. High-volume a team collaboration platform usually need queues, routing, and analytics most, while smaller businesses often prioritize voicemail, forwarding, and an auto attendant.
4. Check integrations
The system should fit into your existing workflow. CRM, help desk, video, SMS, team chat, and contact center integrations can reduce manual work and improve context for sales and support a team collaboration platform.
5. Review security and support
Security and reliability matter, especially if you handle sensitive data. Look for encryption, secure voice protocols, regular updates, redundancy, disaster recovery, admin controls, compliance support, and responsive customer service.
Which IP phone system is best for your business?
If you want the easiest setup, look for a cloud-based IP phone system. If you have a small team or limited IT support, a simple cloud VoIP provider is your best bet. If you already use desk phones or PBX hardware, consider an on-premise or hybrid IP PBX. If you want to support remote or hybrid employees, choose a cloud-based system with mobile and desktop apps. If you need more control over infrastructure and security, an on-premise or private-cloud IP phone system is the right fit. If you want to keep some legacy phone infrastructure, a hybrid IP phone system makes sense. If you handle high call volume, look for a cloud phone system with call queues, analytics, routing, and contact center features. If you need advanced customer experience tools, consider a UCaaS or CCaaS-ready platform. If you want flexible SIP trunking and PBX control, a software-based or appliance-based IP PBX is worth exploring. If you mainly need a business number and call forwarding, a virtual phone system will do the job.
How Much Do IP Phone Systems Cost?
IP phone system costs depend on the deployment model, number of users, hardware needs, and feature set. Cloud systems usually charge per user per month, while on-premise systems require more upfront spending on hardware, licensing, installation, and support.
Cloud IP phone system pricing
Cloud VoIP plans are typically sold as monthly or annual subscriptions. Basic plans often start around $15 to $30 per user per month, while more advanced plans with call recording, analytics, CRM integrations, or contact center features can cost more. Cloud pricing is usually best for businesses that want lower upfront costs, provider-managed maintenance, easy scaling, remote access, and predictable monthly billing.
On-premise IP PBX pricing
An on-premise IP PBX system usually costs more upfront because your business owns or manages more of the infrastructure. An IP PBX appliance or server can range from $500 to over $5,000 and covers core call management, extensions, routing, and voicemail. Software licensing typically runs $100 to $300 or more per user or extension and covers user seats and advanced features. Installation and configuration can cost anywhere from $1,000 to over $10,000 and includes setup, call flows, routing, and testing. SIP trunking runs $15 to $50 or more per trunk per month for internet-based phone lines. Maintenance and support typically costs 10 to 20 percent of the system cost annually and covers updates, troubleshooting, and repairs. Internal or outsourced IT support varies widely and covers ongoing administration and security.
A small office may spend a few thousand dollars upfront, while a larger business with multiple locations and more complex routing can spend significantly more.
IP phone hardware costs
Many systems can run on softphones and mobile apps, but physical hardware often adds to the budget. IP desk phones typically cost $75 to $300 or more each and are used by receptionists, executives, and shared desks. IP conference phones range from $300 to $1,500 or more and are used in meeting rooms. Headsets run $30 to $250 or more each and are popular with sales and support a team collaboration platform. Routers and firewalls cost $100 to $500 or more and help ensure secure, reliable voice traffic. PoE switches range from $75 to $500 or more and power phones over Ethernet. Analog telephone adapters cost $25 to $100 or more each and are used to connect fax machines or legacy devices. Backup internet or power supplies range from $100 to $1,000 or more and help reduce downtime.
Hidden costs to consider
The lowest sticker price is not always the lowest total cost. Be mindful of potential hidden costs including set-up or implementation fees, number porting fees, international calling rates, toll-free numbers and minutes, advanced analytics or reporting, call recording storage, contact center add-ons, AI features or automation tools, CRM or help desk integrations, admin or IT support, hardware replacement, training and onboarding, and early termination fees or long-term contract requirements.
Time for an Upgrade? Choose Cytranet
Choosing the right IP phone system starts with understanding how your team communicates today and where your business needs to go next.
For some businesses, that means replacing legacy landlines with a simple cloud-based phone system. For others, it means finding a flexible hybrid or on-premise IP PBX that works with existing infrastructure. The best choice depends on your users, devices, call volume, IT resources, budget, and customer communication needs.
With Cytranet, you can move to a cloud-based business phone system that supports calling, video, messaging, mobile access, analytics, and customer engagement tools in one platform. Plans start at $15 per user per month, making it easy to modernize your phone system without the complexity of traditional telecom infrastructure.
IP Phone System FAQs
What is an IP phone system? An IP phone system routes voice calls over the internet or a private IP network instead of traditional copper phone lines. It converts audio into digital data packets, transmits them over the network, and reassembles them at the other end, the same way email or web traffic works.
Why would someone use a VoIP phone system? Primarily for cost and flexibility. VoIP phone calls are significantly cheaper than a traditional phone system, especially for long-distance and international calls. It also lets you make and receive calls from anywhere with an internet connection and easily scales up or down without new hardware.
Can I replace my landline with VoIP? Yes. For most people and businesses, VoIP phone service is a full landline replacement. You keep your existing phone number, make 911 calls, and use standard handsets with an adapter or a dedicated IP phone. The main caveat is that VoIP service depends on your internet connection and will not work during a power or internet outage unless you have a backup.
Is there a monthly charge for a VoIP phone? Yes. You pay a monthly subscription to a VoIP provider rather than a traditional phone company. Plans typically range from around $10 to $30 per month for personal use and $20 to $50 per user per month for business plans, though pricing varies widely by provider and the features included.
What is IP VoIP? The phrase IP VoIP is redundant. VoIP already stands for Voice over Internet Protocol, so the IP is already built into the term.
