Best Small Business Phone Systems of 2025

Ooma offers several unique plans tailored for both small businesses and larger companies. Its phone systems come with over 100 features, such as unlimited calling throughout the United States, Canada, Mexico, and Puerto Rico, call recording and automated forwarding, video conferencing, an internal team chat system, and much more.

Its specific plans include its Essentials, Pro, and Pro Plus services, which all cover a wide range of business needs at an affordable price. Ooma’s Pro and Pro Plus plans also integrate with Square, Salesforce, AgencyZoom, Clio, QuickBooks, and more, which makes it easy for businesses to manage their workflows simultaneously without paying full price for additional platforms. Oooma’s Enterprise plan, which is geared toward larger businesses, comes with all of these features as well as others, like voice and video conferencing, text messaging, and a mobile app.

Outside of its standard video conferencing service, Zoom also offers a phone system that businesses can use to make and receive internal and outgoing calls. Zoom’s phone plan includes features, like domestic calling throughout the United States and Canada, an online fax number for faxing, and added cloud storage space. Zoom’s United States and Canada Calling plan also comes with its own in-house AI software that helps businesses access a summary of all previously made calls, conduct voicemail task extraction, and have a customized SMS summary thread for teams.

Along with these features, Zoom also has several add-ons, such as a phone number extension, three-way impromptu meeting calls, and metered international calling. You’d have to pay more for these features since they cost extra outside of its standard plan features. Zoom’s business phone system also doesn’t come with many integrations. The platform is best suited for businesses that already use Zoom’s workplace tools since they’re already partially set up with the site.

RingCentral offers several business phone systems that have AI-powered features. The company’s plans allow businesses to manage their calls and texts, send faxes, collaborate via its internal chat feature, and get unlimited calling within the United States and Canada, as well as a shared voicemail system.

These plans also come with an AI-powered receptionist that can automatically respond to incoming calls at any time, which comes in handy when team members sign off for the day. RingCentral’s phone systems also integrate with other business suite platforms, like Google and Microsoft Teams, under its Core plan, as well as others like HubSpot, Salesforce, and Zendesk under its Advanced Plan.

Nextiva’s business fully cloud-based VoIP phone systems are customized for all types of teams, including smaller ones that are in the process of expanding, those that are more sales and service-oriented, as well as larger enterprises. Its phone plans come with standard features like inbound and outbound calling, call routing, and more advanced ones, like SMS text messaging for incoming and outgoing messages, in-house video meetings via Nextiva’s platform, screen and file sharing during video calls, voicemail transcription, and a 24/7 automated chatbot that can respond to customer inquiries.

Nextiva’s phone systems also come with TLS and SRTP encryption for enhanced privacy and security, and offer a non-local, toll-free number under its Engage plan. Nextiva also allows businesses to use their VoIP system with an existing phone by purchasing an ATA adapter, and lets them transfer and use their existing business phone numbers with its system.

Dialpad’s Connect business phone service comes with high-definition voice calling that makes it easier to conduct and receive quality-sounding calls. Its phone system comes with group SMS messaging for internal teams as well as unlimited video meetings. Under its Connect plans, Dialpad also offers custom call routing and recording, contact syncing, and the ability to conduct three-way calls.

Their systems are also HIPAA/BAA compliant for businesses that are required to follow these legal compliances. The platform also lets you transfer an existing phone number to use in its system, without having to obtain a new one. Its phone system also comes with a connected mobile and desktop app that’s compatible with iOS/Mac, Android, and Windows. Its service also integrates with business and workflow tools like HubSpot, Slack, and ServiceNow, but you’d need to purchase its Pro and Enterprise Connect plans to access these features. Dialpad also offers internet faxing, but you’d also need to pay extra for this service.

As part of their plans, Vonage equips businesses with features, such as unlimited domestic calling, on-demand call recording, and a virtual voicemail and voicemail-to-email system. Vonage also allows businesses to communicate with customers via SMS and MMS texting, have an internal team chat on their platform, and have a virtual receptionist that can automatically answer calls. With Vonage, businesses can also transfer their existing phone number to its system.

Though it offers features like AI transcription for call recordings, an AI-powered virtual assistant, and a callback queue, you’d have to pay extra for them. Vonage also gives new users the option to use a local phone number or a toll-free or 1-800 one, but those options come at an additional cost as well.

Avaya’s business phone systems are cloud-based and allow businesses to upgrade how they manage their communications thanks to features like its IVR call menu, shared voicemail system, SMS and MMS text messaging, unlimited domestic calling, and integrations with Google and Microsoft. All of Avaya’s plans also come with AI-powered call and video meeting transcription, voicemail transcription, high-definition phone calling, and a toll-free business phone number.

Avaya also lets businesses rent desk and conference phones for any plan. It offers access to its own API system within the cloud that’s customizable and allows businesses to manage their workflow applications. Avaya also lets businesses troubleshoot their cloud systems thanks to its Quality of Service (QoS) Analytics hub, which provides real-time quality health checks within its cloud system. Avaya offers unlimited faxing, but only under its Advanced and Ultra plans. The same standards apply to unlimited file, video, and call recording storage, as well as using an international phone number, which operates on a fixed cost, per user per month system.