Now we’re in the second one and it’s happening fast. AI is slipping into phone systems in ways that actually matter: instant transcripts, voicemail that turns into clean text, and AI receptionists that don’t sound like they crawled out of a call center nightmare. For a small business, this isn’t just “nice to have.” It’s a real edge.
In this guide I’ll walk you through the advantages of VoIP/cloud phone systems, then show you how to choose the right one for your small business, and finally compare the eight best options available today.
Main Takeaways
- Choosing the right system comes down to price, audio quality, integrations, AI capabilities, and real user feedback. The tools that stand out are the ones that make daily work smoother, not harder.
- Allo, Aircall, and Zoom Phone came out on top for small businesses thanks to their strong AI features, reliable performance, and seamless integrations.
Why Cloud/VoIP Phone Systems Are Often Best for Small Businesses
Before we dive into our selection, let’s start by presenting the advantages of cloud-based phone systems over traditional landlines:
- Lower costs: You skip the pricey hardware and avoid setup fees, so you only pay for what you actually use.
- Flexibility and scalability: You can add or remove users in minutes and keep everyone connected even if your team is remote or spread across countries.
- Integrations: Your phone system links with your CRM help desk and other tools so calls data and notes flow automatically between systems.
- Smart features: You get modern tools like IVR AI receptionists, call transcripts and voicemail to text that make your team faster and your customer experience smoother.
How To Pick the Right Phone System for Your SMB
Choosing the right system comes down to a few practical checks.
Focus on what actually affects your team day to day:
- Look for a plan that fits your budget, offers clear pricing, and gives you a free trial so you can test before you commit.
- Audio quality: Make sure the provider delivers HD sound with stable connections and no random cuts during calls.
- AI features: Check if the system includes useful AI tools like transcripts, voicemail to text, and automated call routing that save you time.
- Integrations: Confirm it connects smoothly with your CRM support platform and other core apps your team relies on.
- Online reviews: Read what real users say about reliability, support, and overall experience so you know what to expect (some of the tools we tested looked great until we checked G2 reviews).
7 Small Business Phone Systems Reviewed
To build this list, I went hands-on with 21 phone systems, from the big veterans to the hungry challengers. Most didn’t make the cut. Only the seven that actually delivered stayed on the list.
Here’s the lineup I trust. After testing everything hands-on and cutting the fluff, these are the phone systems that earned their spot. If you want solid performance, smart features, and real value for your small business, start with these seven.
Allo - The AI-powered VoIP phone system
What is Allo?
Allo is a business phone system built for teams that live on their phones. It runs smoothly on mobile and keeps things simple without sacrificing power.
What really makes it stand out is how much AI is baked into the product. You get tools that used to belong to big call centers: an AI answering service, smart IVR menus, clean call transcripts, summaries, and voicemail that turns into text. If your team is always on the move or you just want a modern system that feels fast and helpful, Allo hits the mark.
Pros & Cons of Allo
On the plus side, Allo is affordable and all-inclusive, so you get everything right away. The AI features are strong and practical, with AI answering, AI IVR, transcripts, summaries, and voicemail to text. It also offers native CRM integrations with HubSpot, Salesforce, Attio, Notion, and Folk (among others). And if you work across borders, the coverage in 20 countries and support in 3 languages add real flexibility.
On the downside, Allo doesn’t support physical desk phones, so it won’t suit teams that rely on hardware. And while the integrations are good, they’re locked behind the higher plan, which might force some businesses to upgrade earlier than planned.
Allo Pricing
Allo offers two plans:
- Starter: $25 per month for up to one user. You get unlimited calls, a local number, AI summaries, and IVR.
- Business: $45 per month per user. You unlock integrations, unlimited AI answering, SMS, and international calling.
You can test them for free for 7 days.
Online reviews of Allo
Allo scores a 4.8/5 on G2.
Quo - The easy-to-use phone system
What is Quo?
Quo is a modern business phone system built around a clean, minimalist interface. Like Allo, it comes with a solid set of AI features. It feels lightweight, quick to learn, and geared toward teams that want something simple without giving up useful automation. If you prefer tools that stay out of your way and just work, Quo fits that mold.
Pros & Cons of Quo
On the plus side, Quo’s support team is fast to reply and useful. The UI is clean, intuitive, and easy to navigate, which makes onboarding smooth for teams that don’t want a steep learning curve.
On the downside, Quo has strict rules around cold calling and may block your account if they think you’re violating them. It also lacks a strong spam filter, which can be annoying for teams dealing with unwanted calls. And local numbers are available only in the US and Canada, limiting its flexibility for international businesses.
Quo Pricing
Quo offers three plans:
- Starter: $19 per user per month. Includes a local number, unlimited calling and messaging to US and Canadian numbers, voicemail transcripts, and 10 calls handled by Sona, their AI agent.
- Business: $33 per user per month. Adds AI call summaries and transcripts, group calling, call transfers, analytics and reporting, plus integrations with HubSpot and Salesforce.
- Scale: $47 per user per month: Includes dedicated onboarding support, priority live chat and email support, and inbound phone support.
A 7-day free trial is available.
Online reviews of Quo
Quo boasts a 4.7/5 rating on G2.
Aircall - Sales teams’ favorite
What is Aircall?
Aircall is a cloud phone system that’s especially popular with sales teams. Its biggest strength is how well it plugs into CRMs, particularly Salesforce and HubSpot.
If your reps spend their day in those tools and you want calls, notes, and activity data to sync without hassle, Aircall is built for that workflow.
Pros & Cons of Aircall
On the plus side, Aircall offers some of the deepest CRM integrations you can get which makes it great for sales-heavy teams. It also covers a wide range of countries with availability in 38 locations. And the unlimited domestic calling and texting gives teams a predictable monthly cost without worrying about usage.
On the downside, support can feel inconsistent, and some users report being left to troubleshoot on their own. Aircall also leans heavily on add-ons with features like AI Voice Agent, WhatsApp, and Analytics Plus coming at extra monthly charges. And the three-license minimum makes it pricey for small or early-stage teams that only need one or two seats.
Aircall Pricing
Aircall offers two plans:
- Essentials: $40 per license. Includes a local number, unlimited calls within the US and Canada, IVR, call recording, and the ability to send and receive SMS and MMS.
- Professional: $70 per license. Adds advanced analytics, sales tools like Power Dialer and Voicemail Drop, and unlimited call recordings.
A minimum of 3 licenses is required.
A 7-day free trial is available.
>Online reviews of Aircall
Aircall holds a 4.4 out of 5 rating on G2.
Zoom Phone
What is Zoom Phone?
Zoom Phone is the business phone system built by the same team behind Zoom Meetings. It’s designed for small businesses that already rely on Zoom and want a phone solution that fits naturally into their workflow. Its biggest strength is the deep integration with Zoom Meetings, which makes it easy to move from a call to a full meeting or switch devices without breaking the flow.
Pros & Cons of Zoom Phone
On the plus side, Zoom Phone delivers good connectivity and solid call quality, even for teams that work on the go. The integration with Zoom is seamless, and the transition between phone, meeting, and mobile feels smooth and intuitive.
On the downside, the mobile app lacks shared contacts, which slows teams that need quick access to customer or client details. The onboarding feels a bit too short for users who want more guidance. And reaching the support team can be difficult, especially during busy periods.
Zoom Phone Pricing
Zoom offers three plans:
- US & CA Unlimited: $15 per user per month. Includes unlimited calling in the US and Canada, free SMS in those regions, a phone number, call recording, integrations like Salesforce and Slack, and AI features such as call summaries, voicemail prioritization, and task extraction.
- Pro Plus: $21.99 per user per month. Bundles Zoom Phone with Zoom Workspace, giving you Zoom Meetings, Team Chat, Zoom Docs, Zoom Mail, and Live Chat.
- Business Plus: $26.99 per user per month. Adds more storage, higher meeting capacity, and SSO.
Online reviews of Zoom Phone
Allo has a 4.6/5 rating on G2.
RingCentral
What is RingCentral?
RingCentral is one of the oldest players in the cloud phone space. It’s been around since 1999 — yep, you read that right. Over the years it’s evolved into a full UCaaS platform that brings voice, video, messaging, and even contact center tools into one ecosystem. If you want something mature, battle tested, and endlessly configurable, RingCentral has the track record to back it up.
Pros & Cons of RingCentral
On the plus side, RingCentral offers extensive third party integrations and plugs into a wide range of software. Its huge online community is another big advantage, since you can often find solutions from other users faster than waiting on support. If you rely on multiple tools and want a system that plays well with all of them, RingCentral delivers.
On the downside, canceling your subscription is more difficult than it should be and requires talking to support. CRM integrations aren’t as strong as competitors, especially when it comes to HubSpot. The AI receptionist is also billed as an add on at $39/user/month with only one hundred minutes included, which can add up quickly for busy teams.
RingCentral Pricing
RingCentral offers three plans:
- Core: $30 per user per month. Includes unlimited domestic calling, call recordings, and meetings.
- Advanced: $35 per user per month. Adds CRM integrations and reporting features.
- Ultra: $45 per user per month. Includes unlimited storage, webinars, and device analytics.
Online reviews of RingCentral
Allo holds a 4.3 out of 5 rating on G2.
Nextiva
What is Nextiva?
Nextiva is a full Unified Communications platform that goes beyond standard business calling. It supports voice, video meetings, team chat, SMS, WhatsApp, and even Instagram Messenger. You also get built-in live chat, which makes it easy to manage conversations from multiple channels in one place. If you want a single hub for all your communication needs rather than stitching together separate tools, Nextiva is built for that.
Pros & Cons of Nextiva
On the plus side, Nextiva offers a true UCaaS experience with voice, video meetings, team chat, SMS, and MMS all in one platform. It even includes light CRM and ticketing tools, plus the ability to host webinars and use online faxing. For teams that want everything under one roof, it’s a strong contender.
On the downside, the basic plan lacks features that competitors include by default, which makes it less attractive for smaller businesses. Key tools like call routing and call recording are missing unless you upgrade. And the Essential plan does not include CRM integrations, which limits its usefulness for sales or support teams.
Nextiva Pricing
Nextiva offers three plans:
- Core: $23 per user per month. Includes a phone number, SMS, video meetings, call routing, and team chat.
- Engage: $50 per user per month. Adds advanced reporting, web chat, and a toll-free number.
- Power Suite CX: $75 per user per month (up to 100 agents). Includes intelligent routing plus AI transcription and summarization.
>Online reviews of Nextiva
Nextiva scores a 4.5/5 on G2.
Microsoft Teams Phone
What is Microsoft Teams Phone?
Teams is essentially Microsoft Teams with the added ability to handle business calls. If your company already lives inside the Microsoft ecosystem, this option feels familiar right away. You get the same interface, the same collaboration tools, and the bonus of being able to place and receive calls without switching apps.
Pros & Cons of MS Teams Phone
On the plus side, Teams integrates tightly with the rest of Microsoft’s tools, including Outlook for contacts and scheduling. Call quality is reliable and steady, and the interface stays simple and easy to use, especially if your team already works in Teams every day.
On the downside, setup is super complex and often requires an IT admin to configure everything correctly. AI features come at a premium since call transcription, summaries, and chatbot features require the Microsoft Copilot add-on (at $30/user/ month). CRM integrations are also behind the curve, with middling ratings such as a 3.3 out of 5 on the HubSpot marketplace.
>MS Teams Phone Pricing
- Microsoft Teams Phone Standard: $10 per user per month, paid yearly. Includes the core phone system technology inside Teams, but no calling minutes. To make external calls, you’ll need a Microsoft-certified external service provider.
- Teams Phone with pay as you go calling: $13 per user per month, paid yearly. Includes outbound calling service from Microsoft with a pay as you go billing model.
- Teams Phone with Calling Plan: $17 per user per month, paid yearly. Includes 3,000 outbound domestic calling minutes for users in the US, UK, and Canada.
A separate Microsoft Teams license is required, starting at $4.00 per user per month, paid yearly. Most businesses will also want a separate phone subscription since it’s usually cheaper than buying minutes directly from Microsoft.
Online reviews of MS Teams Phone
Teams Phone achieves a 4.4 out of 5 score on G2.
FAQ about SMB phone systems
What are the best phone systems under $30/month?
Allo, Quo and Zoom Phone all offer plans under $30/month that work particularly well for SMBs. They offer free trials, strong CRM integrations, and a clean and easy-to-use interface.
What are the best AI phone systems?
Allo and Aircall are leading the race with advanced AI features such as AI answering services, call summaries, voice-activated IVR, and more.
How much does a small business phone system cost?
It depends on the feature set, integrations, and the number of minutes you need. Most SMB phone systems, however, start at around $25-$30 per user per month on a month-to-month plan.
