Phone Systems (VoIP) Software

What is Phone Systems (VoIP) Software?

Phone systems software, also known as Voice over IP (VoIP) software, transforms voice data into digital signals that are transmitted through an internet connection to make and receive phone calls. VoIP systems do not require physical landline services or networks to function, and many organizations are now choosing VoIP software due to its convenience, cost-effectiveness, and flexibility.

Modern VoIP solutions are no longer siloed from other business technology, and fully integrated communication systems are becoming a must-have for competitive advantage. For example:

  • VoIP is part of overarching UCaaS solutions that centralize communication tools such as voice calls, video conferencing, and messaging into one platform.
  • VoIP software can also be integrated with contact center solutions to centralize an organization’s communication tools, increase agent productivity, and streamline customer experience.
  • Many leading VoIP providers now offer CX software solutions as all-in-one suites for facilitating communication, centralizing support and experience tools, and managing customers and employees for a streamlined experience.

Key Capabilities of Phone Systems (VoIP) Software

  • Basic Calling Features:
    • Domestic & International Calling
    • Voicemail
    • Caller ID
    • Call Waiting
    • Speed Dial
    • Ring Groups
    • Conference Calling
    • Call Blocking
    • Call Forwarding
    • Hold Music
  • Call Monitoring & Whisper Coaching: VoIP solutions offer call monitoring tools for supervisors to listen in on calls and provide live coaching tips for employees or agents.
  • Automatic Call Distribution (ACD): VoIP systems offer ACD, which helps maximize efficiency by automatically distributing incoming calls based on customized rules.
  • Intelligent Call Routing: AI-powered VoIP vendors can deliver intelligent call routing, for transferring calls to the best agent based on need or sentiment.
  • Click-to-Call: VoIP solutions provide one-click calling buttons that can be integrated into company websites or CRM systems for instant call connections.
  • Softphones: Virtual softphones, either via desktop or mobile apps, make it possible to use VoIP for calls on any device with an internet connection.
  • Auto-Attendant: By automatically answering calls, an auto-attendant, also known as a virtual receptionist, provides information such as business hours and location, while also being able to route callers to the appropriate agent or department.
  • Call Analytics: Many VoIP providers offer call tracking tools that companies can use to analyze call quality, for process improvements and customer experience insights.
  • Voicemail-to-Email Transcription: VoIP systems provide voicemail-to-email transcription that will send a recording of a voicemail along with a written transcript to employees' inboxes.
  • Interactive Voice Response (IVR): IVRs guide callers through automated menus to identify needs and efficiently route calls, helping reduce wait times.
  • APIs: Many VoIP providers provide APIs so developers can integrate VoIP features directly into company systems and applications.

Have more questions about phone systems software? Jump to our phone systems FAQs to learn more.

Top 10 Phone Systems (VoIP) Providers

PanTerra - Streams / Crexendo / RingEX / Phonexa / Twilio Voice / Vonage / VirtualPBX / 8x8 X Series / Switchvox Cloud / VoIPstudio

WH Score
Verizon VoIP
Starting Price:$35 per phone number / per month
Verizon VoIP Business Digital Voice is an advanced communication solution that is built to withstand peaks in customer call volumes, via secure and hosted VoIP infrastructure. The platform empowers remote and hybrid teams by providing access to their phone system no matter where they are, which incl...
WH Score
West Telecom
Starting Price:N/A
West Telecom is a leading provider of advanced communication solutions, offering businesses a comprehensive suite of features and cutting-edge technology. With a strong focus on innovation and customer satisfaction, West Telecom delivers reliable and scalable phone systems that cater to businesses o...
WH Score
FluentStream VoIP
Starting Price:N/A
Offering unmatched quality, innovative features, and a penchant for customer support, FluentStream goes above and beyond to ensure confidence in your business communications, no matter your company's size or industry. FluentStream offers call monitoring, telemarketing, IVR and reporting features, an...
WH Score
Alliance Phones
Starting Price:$19.97 per user / per month
The US-based business VoIP provider Alliance Phones is the most easy-to-use Business VoIP Provider. The phone is easy to set-up and use, providing small and medium-sized companies, communities and call centers with IP telephony solutions. The phone supports a number of platforms such as Android, iOS...
WH Score
Starting Price:$13.75 per user / per month
WH Score
Alcatel-Lucent OmniPCX Office

Alcatel-Lucent OmniPCX Office

Starting Price:N/A
Alcatel Lucent is a leading provider of software solutions for the telecommunications industry. Their products are designed to help service providers and enterprise customers manage their networks and services more efficiently.
WH Score
Starting Price:$109.87 per user / per month
SureTel has a unique outlook on the VoIP market and it's one leading many businesses to significant savings. SureTel knows that customers don't use all of their phones, all of the time and they don't charge according to a user based model as a result. Instead they charge by active simultaneous calls...
WH Score
Starting Price:N/A
Zultys, founded in 2006, is one of the first companies to offer a true SIP-based PBX solution for businesses. The company invested heavily in research and development in order to deliver one of the most reliable, cutting-edge IP PBX solutions for SMBs. The Zultys MX platform is a high-performance, y...
WH Score
Starting Price:$0 per user / per month
Freshdesk unifies contact center capabilities with the expertise and knowledge of help desks, giving consumers the benefit of having all their solutions in one place. A powerful, comprehensive ticketing system keeps all active agents aware of what others are doing to increase productivity and avoid ...
WH Score
Starting Price:$19 per user / per month
Firmao is an online CRM software that is tailored to the CRM needs of small and medium businesses in service, sales, and manufacturing. Firmao is also a great CRM option for remote teams who need centralized tools for dynamic growth.

Learn more about Phone Systems Software

Is VoIP better than landline?

Landline and traditional on-site PBX systems are being phased out increasingly every year due to the vast benefits of VoIP, such as cost-savings, productivity hikes, and robust feature sets including global VoIP calling, virtual assistants, intelligent call routing, and even customer journey mapping. 

Is VoIP cheaper than a landline?

VoIP phone systems are cheaper than landlines, typically costing less than 50% of what a landline costs. This is because a VoIP platform operates through your existing internet connection, compared to the copper wires of landlines, which must be physically installed.

What is the difference between VoIP and UCaaS?

VoIP is one form of communication i.e. voice-based communication, which can be facilitated over the internet. UCaaS, on the other hand, is short for Unified Communications as a Service, which consolidates a variety of different communication channels into one centralized platform.

In other words, UCaaS solutions consist of voice, SMS, chat, email and even video, all within a single agent console - while VoIP refers to only one communication channel, which is voice.

Does VoIP work during a power outage?

No. VoIP does not work during a power outage. VoIP relies on an internet connection, so when the VoIP router loses power, the system cannot be used to make and receive calls. However, organizations can reduce VoIP system downtime during a power outage by using backup power sources or forwarding calls to mobile devices while the power is off.

Can VoIP work without the internet?

No. VoIP will not work without an internet connection. VoIP software converts voice signals into digital data that is transmitted through a high-speed internet connection to make and receive calls. When the internet is down, companies must rely on mobile devices for communication.

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