Business VoIP

A business phone system is a critical asset for any business. Many small business owners initially operate with only a few landlines coming into the office, along with their cell phones. However, over time the need for better communication systems becomes apparent, and these owners realize that a business phone system is a necessity.

With the right business phone system in place, a company can project a professional image and obtain capabilities that were previously only within reach of the highest bidders. Read more.

Compare Top Business VoIP Providers


All Inclusive Phone System in the Cloud

Over 300,000 Customers

Includes Voice, Fax, SMS & HD Meetings

Corded & Cordless Phones

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Business Communications Experts

Over 60 Million Users Globally

Unlimited Calling to US and Canada

Three Free Months – Free Install

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Highest-Rated Cloud Voice Platform

Unlimited US calling

World-Class Reliability

100% USA-Based Support

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#1 Market Leader Award

Best industry SLA of 99.997% uptime

Servicing customers in 100+ countries

4-year Gartner Magic Quadrant Leader

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Award Winning Business Phone System

Unlimited Calling & Faxing

Scales with Your Business

No Technical Skills Needed, Plug & Play

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Evolve IP

The Cloud Services Company

Award-winning cloud IP phone systems

Fully integrating voice, video, IM&P

Easily-managed mobile applications

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Take Control of Your PBX

Easy to Install and Manage PABX

Deliver Faxes & Voicemail to Inbox

Use Inbuilt Softphone to Place Calls

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Alcatel-Lucent OmniPCX Office

The Challenges of Collaboration - Solved

One-number service on several devices

Integrate with collaboration tools

Build a-la-carte selection of services

Not Yet Rated

Alliance Phones

Ally Your Business with Alliance Phones

Quick and Simple Installation

Easy Integration

Feature Rich

Not Yet Rated


The Leading Provider of Business VoIP

Low Cost, Low Overhead

Business-Class Features

Reliable & Easy to Use

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Phone Systems Made Brilliantly Simple

Over 30,000 Companies Use Shoretel

Integrate with Outlook and Popular CRMs

Lowest TCO = Fastest VoIP ROI

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Engage the Power of We

Voice, Video, Mobile - on any Device

Lower Collaboration TCO

Flexibility from the Core

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We are the Business Phone Experts!

Cloud PBX

SIP Trunking

State-of-the-Art Hardware

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Interactive Intelligence

Get Your Team Together

Anytime, anywhere access, on any device

Reliable, secure and agile IP PBX

Advanced voice encryption methods

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A Phone System That's More Than Just Talk

Easy-to-Use Advanced Features

Built-In Collaboration, Higher Productivity

Work Anywhere Support

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Broadview Networks

Trusted by Over 200,000 Business People

Award-winning unified communications

Co-workers availability & click to call

One website to manage all services

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Cisco Unified Communications

Communicate Flexibly and Effectively

End-to-end collaboration capabilities

Supports third-party applications

Free Cisco cloud video bridging

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Your Complete Phone System in the Cloud

All of the Features, None of the Hassle

Easy to Manage

Trusted Uptime

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Brilliant, intuitive communication.

Greatest phone features, in the cloud

Native mobile apps

Intuitive, no IT experience needed

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VoIP Phone Systems to Power Your Business

Switchvox: award-winning IP PBX

Cloud, Premise, or Hybrid: UC Your Way!

Unified Communications Features Suite

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A Better Way to Connect

No Contracts. No Hardware.

Routes your calls anywhere

Voicemail to email

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Award-Winning Phone Systems for SMB

Streamlined Voice Features

VoIP, traditional & digital phone lines

Connect Anywhere

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Data. Voice. Security.

Hosted VoIP and UC

SIP Trunking and Enterprise Trunking

Analog Lines and PRI Phone Lines

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Goodbye Expensive Phone Bills.

Unlimited calling – 25 countries

Tier 1 Telco grade platform

Plug and play ready Polycom IP phones

Not Yet Rated


Gets your business. Makes it better.

A 2015 Gartner "Cool" Vendor

Pay only for apps and external calls

Compatible with any SIP standard phones

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The Smart Phone for Your Business

High quality, affordable business phone

No special IP phones needed

Transfer your existing number for free

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Big phone system mojo. Tiny little price.

Easy to use web portal

Read your voicemails anywhere, anytime

"Follow Me" intelligent call routing

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More than just phone lines.

Communications as a service platform

Guaranteed 99.99% uptime

Fathom Call Tracking™

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Advance your communications with sipVine

Hosted VoIP or SIP Trunks

Big business features

No term contract. None.

Not Yet Rated


Award-Winning Cloud Unified Communication

Voice communications across devices

End-to-end QoS-enabled network

Intelligent call routing

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Unify Unified Communications

Harmonize Your Enterprise

Award-winning unified communications app

Consumer-friendly, enterprise-secure

Desktop, mobile and soft phone clients

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Vantage MAXvoice

Open Up to MAXimum communications Power

More accessible with Unified Messaging

Award–winner from Frost & Sullivan

Redundancy across multiple data centers

Not Yet Rated


Give Your Business a Professional Image

Reliable, Flexible, Full-Featured Plans

Mix VoIP, Analog, and Smart Phones

Disaster Recovery & Business Continuity

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Real Technologies Solving Real Problems

Full PBX Functionality

Advanced Call Management Tools

Unrivaled Flexibility and Control

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XO Communications

Your #1 Source for Telecommunicatiions

Easy-to-manage VoIP and data bundle

Carrier-grade security and reliability

WorkTime Mobile App

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Take Your Communications to the Cloud

True “all-in-one” UC platform

Feature-rich advanced IP phone system

Designed for SIP Open Standards

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Voip Studio

Simple and Powerful Telephone System

Free Internet Calls

Superior Sound Quality

24/7 Customer Support

Not Yet Rated


Turn the World Into Your Office

Keep Your Existing Number

Read Your Voicemails

No Expensive Hardware to Purchase

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Talking Platforms USA

Cloud-Based, White Label Hosted VoIP

100% White Label Cloud-Based Hosted PBX

No Need to Build the Software Yourself

Operate Your Own VoIP Business

Not Yet Rated


Allworx Systems: Effortless Communication

Full PBX & Key System

Flexible: add features as you need them

Multiple disaster recovery options

Not Yet Rated

CCG Telecom – AudioCodes

The SIP Enablement Experts

Hosted Enterprise Voice for Office 365

Skype for Business Integration

Security, Appliances, and Infrastructure

Not Yet Rated

IBM Sametime

Next gen real-time social communications

Presence and telephony awareness

Click-to-call, click-to-conference

High-definition audio and video meetings

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Your Business Phone Service in the Cloud

All-in-one intuitive web interface

Packed with over 50 features

Up and running in minutes

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Phone System Buyer's Guide

Businesses switch their phone systems for a number of reasons, the key ones are:

Selecting a phone system can be a daunting task given the variety in the market, the many connectivity options that exist, and the various technical issues involved. Here are some key points that you should consider.

Phone Systems Technologies

There are two main technologies that phone systems use. The first is Time Division Multiplexing (TDM), which is what the traditional phone systems have been using for many decades. It is a proven technology that is both very reliable and cost efficient, but generally TDM systems only support voice calls and adding new features can be very expensive and difficult. The traditional copper pair coming to the phone sitting on most desks used TDM technology. The second technology is rapidly overtaking TDM in popularity and capability. This is VoIP or Voice over Internet Protocol, the same technology that computers over the Internet use to communicate.

VoIP systems can have very elaborate features (including these top 5 must-have phone system features) as a standard offering, many of which would not be possible with a traditional TDM phone system. Unless there is a very specific reason to use TDM phones, most businesses today opt to use VoIP technology.

However, it is important to remember that with the traditional TDM phone, the phone line is powered by exchanges that have large battery banks available. Even if the building the phone was installed in had a total power failure, the TDM phone would work. This is not the case for a VoIP phone. Businesses need to make sure that they have reliable standby power supply for their VoIP phones to function.

Phone Systems Deployment Options

Businesses can choose to lease or buy the phone system outright; this is a Private branch Exchange, or PBX for short, and it is the hardware on which the phone system runs. With VoIP, the specific device needed is an IP-PBX. Leasing this equipment is cheaper than an outright purchase. However, if businesses lease or buy an IP PBX, they need to manage it themselves and provide the needed infrastructure, space and skilled manpower to manage the exchange.

Businesses also have the alternative of using a phone system based in a data center connected to the Internet; these phones are hosted in the ‘cloud’. A cloud based phone service provider would manage the system and lease the required number of lines to you. In such a situation, the entire onus of managing the phone system lies with the service provider. A user company simply needs to plug the VoIP phones into switches that are connected to the Internet.

Understanding Your Business Needs

Before a short listing can be made, businesses need to understand their communication needs in detail. Users typically fall into one these three types:

Must-Have Phone System Features

With modern phone systems, certain features can now be taken for granted. At the very least, even if you are running a small business, you would want to see the following features implemented in a user friendly manner:

The list above is relatively general, you could have your own specific requirements. Many other features - intercom, alarms, music on hold, call transfer, speed dialing, etc - have become standardized and will be available in almost every basic phone system.

While vendors can sometimes overwhelm a prospective buyer with jargon, business users can simplify their selection process by understanding their own needs and by exploring the use of contemporary technology. When selecting a vendor, look for track record, user reviews, ease of management and user friendliness. With the right phone system working hard for you, you should be able to keep your business running smoothly 24x7.