PBX Phone Systems
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Solgari is a cloud-based contact center and communication solution for small, midsize and large businesses. It caters to financial services, FinTech, e-commerce, retail, logistics, recruitment and government. Primary features incl...Read more about Solgari
Nextiva is a platform that brings communications together with business applications, intelligence, and automation. This helps businesses communicate and build deeper connections with their customers. The platform brings all ...Read more about Nextiva
GoToConnect (formerly Jive) delivers a cloud-based unified communication solution to organizations of all sizes across the U.S. GoToConnect includes integrated products for business VoIP, video conferencing and contact center whic...Read more about GoTo Connect
Comm-unity by NetFortris (formerly Fonality) is a cloud-based communication and collaboration business phone system that caters to all business sizes. Comm-unity scales easily as your business grows, always works when you need it,...Read more about Comm-unity
Answer360 is a cloud-based VoIP solution designed for small and midsize businesses. The solution offers call routing, video conferencing, SIP trunking and other call center functionalities. Answer360 offers hosted VoIP phone ...Read more about Answer360
AVOXI Genius is a cloud-based call center solution that helps small to large enterprises streamline customer service operations and manage business communications. It comes with a centralized dashboard, which enables users to trac...Read more about AVOXI
Convoso’s all-in-one contact center platform generates and converts leads faster using multiple communication channels. The cloud-based solution offers multiple dialing modes (predictive/power/preview) along with two-way texting, ...Read more about Convoso
Five9 is an all-in-one cloud contact center solution for inbound, outbound, blended and omnichannel contact centers world-wide. Powered by Practical AI, Five9 enables agents to provide customer experiences across phone, emai...Read more about Five9
RingCentral MVP is a cloud-based business communications solution that offers tools for Messaging, Video and Phone. Core features of the solution include conferencing, auto-recording and unlimited long-distance and local calling. ...Read more about RingCentral MVP
Bright Pattern is a cloud-based contact center software solution which helps businesses manage multichannel service including inbound and outbound voice, email, chat, and social media. Bright Pattern scales from 5 to 10,000 concur...Read more about Bright Pattern
MiCloud Connect (formerly ShoreTel) is a cloud-based VoIP phone system that offers collaboration and conferencing tools to enable information flow within the organization. The solution enables system administrators to manage use...Read more about MiCloud Connect
Slingshot VoIP includes automated attendants, employee extension features, predictive dialer, automatic call distribution and more. The solution is cloud-based and provides mobile apps for Android and IOS users. Slingshot can...Read more about Slingshot VoIP
Vonage Business Communications
Vonage Business Communications
Vonage Business Solutions is a cloud-based communications solution suitable for small and midsize companies. The solution offers a business phone system that enables businesses to connect their VoIP phone system to internet-enable...Read more about Vonage Business Communications
Avaya IP Office
Avaya IP Office
Avaya IP Office is a cloud-based and on-premise communications and collaboration solution designed for small to midsize businesses. It features multiple auto attendants, auto dialing, conferencing, voicemail-to-email, call fo...Read more about Avaya IP Office
SendHub is a business voice over internet protocol (VoIP) solution. Integrated applications for PBX, Auto Dialer, ACD, CTI, workforce scheduling, softphone, SMS marketing and more are available within the system. This solution is ...Read more about SendHub
Huawei eSpace Contact Center
Huawei eSpace Contact Center
Huawei eSpace Contact Center is a cloud-based contact center solution that caters to various industries such as education, finance, healthcare, government, manufacturing and energy. The solution supports sharing of resources,...Read more about Huawei eSpace Contact Center
Ooma Office is a cloud-based voice + video solution suitable for businesses of all sizes. The platform includes a full suite of business phone features designed to deliver a flawless communications experience and advance team coll...Read more about Ooma Office
ADTRAN’s NetVanta 7100 is an IP data networking and telephony solution integrated into one single platform. Designed mainly for small to midsize businesses, NetVanta 7100 is suitable for businesses up to 100 workstations. The solu...Read more about NetVanta 7100
Mitel MiVoice Business offers a range of unified communications (UC) platforms designed for both small business and large enterprise needs. MiVoice offers virtualization options and supports both cloud-based and on-premise deploym...Read more about MiVoice Business
XMission Hosted PBX
XMission Hosted PBX
XMission is a cloud-based hosted PBX solution that offers a set of business services which include web hosting, unified email and collaboration. XMission allows users to retrieve a voicemail from a specific email address. The...Read more about XMission Hosted PBX
Popular IP PBX and PBX Systems Comparisons
Buyers GuideLast Updated: November 23, 2022
The term “PBX,” for private branch exchange, is in most cases simply a synonym for business phone system.
Internet Protocol PBXes, or IP PBXes, are phone systems that connect calls via the internet rather than the traditional phone network.
We’ll explain the core features and benefits of IP PBX systems. We’ll also take a look at some of the key factors that businesses need to consider when investing in a new phone system.
Here's what we'll cover:
- What Is a PBX and an IP PBX?
- IP PBX
- Which Businesses Need Them?
- Key Considerations
What Is a PBX and an IP PBX?
The term PBX itself is a relic from the early-20th Century, as we explain in our extended definition.
Switchboard Operators, public domain image
Broadly speaking, a PBX’s function is to unite all the separate phone extensions that a business uses so they can function together as one system. Specifically, PBXs:
- Route incoming calls to whichever extension a caller chooses.
- Distribute calls automatically to internal extensions based on pre-set rules.
- Connect internal extensions to outside lines when employees place a call.
- Connect calls internally between the business’s extensions.
PBXs have been performing these same tasks for decades. As the internet increasingly takes over the function of the traditional phone network, however, the capabilities and features of PBXs have also evolved.
VoIP, or the Voice over Internet Protocol, has brought many changes to all aspects of business telephony—PBXs included. With VoIP, it’s now possible to send calls over an internet connection, as opposed to paying for traditional business phone service.
In order to reap the benefits of VoIP, you need an IP PBX rather than a traditional PBX, as an IP PBX system can connect directly to the internet. Older PBX systems, on the other hand, connect to analog or digital phone lines.
There are devices known as gateways that allow you to use VoIP service with an older PBX system. If you’re replacing your system, however, it makes much more sense to simply invest in an IP PBX.
IP PBXs exist in several very different forms. Although they all perform similar functions, there is no strict definition of the term. An IP PBX can refer to:
|Hardware-based on-premise systems||Specific on-site hardware devices that look much like typical rack-mounted servers.|
|Software-based on-premise systems||PBX software running on a computer outfitted with phone connections.|
|Virtualized on-premise systems||“Virtual machines” installed on commodity hardware running a virtualization platform such as VMware.|
|Cloud-based systems||Systems hosted by a VoIP provider in the provider’s data center rather than a server on your business’s premises, delivered as a service over your Internet connection.|
Which Businesses Need Them?
Traditionally, PBXs were very expensive to purchase and maintain, and they were only used by relatively large businesses. Smaller businesses had alternatives such as Key Systems, which are scaled-down and less automated, but perform similar functions. (With Key Systems, users manually select lines: for example, by pressing "9" for an outside line.)
Now it’s common for businesses with even a few employees to use some sort of IP PBX for their office phone system.
IP PBXs allow incoming calls to be routed and automatically distributed, and allow internal extensions to dial each other and share external lines. They provide the same basic functions as traditional PBXs, and can be useful to businesses of almost any size.
Further, as more businesses seek out the conveniences and cost-savings of VoIP telephony, IP PBXs in one of the forms mentioned above have become an increasingly common choice. Rather than trying to modernize an older PBX so it can work with VoIP calls, it often makes more sense to upgrade the whole system. Upgrading also gives buyers a chance to bring in new features which may have previously been unavailable.
Hosted or on-premise. This is probably the most critical decision to make. Companies should look at both options. On-premise systems will typically have higher initial costs, and may also require periodic system maintenance. Hosted PBXs will cost less up front, and will be managed by the provider, but have higher recurring costs. The total cost of ownership for all potential systems should be compared.
Call capacity. PBXs can only handle a limited number of concurrent calls and a limited number of total extensions or “registrations.” (Each VoIP phone connected to the IP PBX requires a single registration.) Assess how many total connections you’ll need, count one for each hardphone and softphone you plan to connect, as well as any devices such as FAX machines that may also be connected via your existing phone service provider, and estimate how many calls your employees will be making and receiving simultaneously when you’re at peak call volume.
Unified communications. This term refers to a range of features that involve communicating across platforms and between different mediums. A common example of this is visual voicemail: a feature that automatically transcribes voicemail messages and emails the transcript to the recipient. Many IP PBXs have UC functions included.
Security. VoIP calls have special network requirements and they often don’t work with well with standard office firewalls. To avoid problems, ensure that your existing firewall is compatible with SIP and VoIP traffic. An alternative is to get an IP PBX that includes a built-in firewall, as many do. Many also include VPN gateways to connect with a corporate Virtual Private Network.
Finally, you can use a device known as a Session Border Controller (SBC), which provides additional security specifically for VoIP systems by policing the “pinholes” that you need to open in your firewall for your VoIP calls.
Auto attendant. This is the automated answering system that greets inbound calls, presents pre-recorded information and gives callers a list of extension options from which to choose. Most IP PBXs include auto attendants, but the level of functionality supported by different systems differs. Advanced IVR systems, the voice menus that allow callers to complete actions such as checking account balances over the phone, are generally only found in call center suites.