unified communications (UC)

Unified communications (UC) is a conceptual framework for integrating various enterprise communication methods -- telephony, video calling and conferencing, email, instant messaging (IM), presence, etc. -- into a single platform, with the goal of streamlining and enhancing business communications, collaboration and productivity. The term unified communications does not represent a singular technology; rather, it indicates a high-level strategy for bringing together an array of disparate tools and services, with the ability to use each in concert or successively via a common user interface (UI). The increasing popularity of UC is part of a larger digital transformation underway in the enterprise. Its potential benefits include better user experience (UX), improved business outcomes and reduced costs.

UC technology facilitates the convergence of software that supports both real-time communications (RTC), such as voice over IP (VoIP), and asynchronous communication, such as email, so the end user has easy, immediate access to all relevant tools in a consistent environment, from any physical location and digital device. Increasingly, many unified communications offerings also include -- or even hinge on -- team collaboration tools, which have messaging-centric workflows and cooperative features, like real-time file sharing and annotating. These next-level UC systems are also referred to as unified communications and collaboration (UCC).

Unified communications technology supports users' ability to seamlessly move from one mode of communication to another within the same interface and session. For example, a user may initiate a conversation via email but then decide to escalate the interaction to RTC, transitioning the session to a voice call with one click and then to a video conference with another click without any disruption.

How unified communications works

A unified communications environment is typically supported by one or more back-end management systems, sometimes referred to as UC platforms, that facilitate integration among services, as well as the front-end clients that provide access. For example, a web conferencing system would make use of an audio conferencing system -- which, in turn, would be built on an underlying Internet Protocol (IP) telephony platform -- and a unified messaging client would allow click-to-talk, click-to-chat or click-to-video functionality.

Unified communications systems and their components can be deployed on premises, in a public or private cloud, or as a combination of all three. Cloud-based unified communications is also called UC as a service (UCaaS). An open source project called WebRTC enables RTC to be embedded into web browsers.

Historically, single-vendor UC environments have demonstrated the tightest integration and compatibility. Interoperability among vendors remains an ongoing challenge in UC, but it has also been mitigated, in part, by partnerships, common protocols and open application programming interfaces (APIs).

Types of UC technologies

User-facing components of UC include the following:

  • email;
  • text messaging;
  • persistent chat;
  • mobility;
  • real-time presence;
  • telephony (fixed line, mobile and VoIP);
  • voicemail;
  • audio transcription;
  • audio conferencing;
  • video conferencing, room-based video conferencing and telepresence;
  • web conferencing, virtual meeting spaces and interactive whiteboards;
  • calendars, scheduling and other personal assistant functions; and
  • enterprise social networking and collaboration platforms.

On the back end, a strong communication system may include the following:

  • a single- or multivendor UC platform or server;
  • a traditional, IP or cloud-based private branch exchange (PBX);
  • devices such as phones, headsets, cameras and microphones, which are also user-facing tools;
  • business communication gateways, such as session border controllers (SBCs); and
  • a multipoint control unit (MCU), or video bridge, for video conferencing with three or more endpoints.
The evolution of unified communications
The digital transformation of the enterprise has seen UC evolve far beyond rudimentary telephone systems to include video conferencing, team messaging, virtual collaboration and more.

Differences between communications and collaboration

UC and team collaboration tools overlap significantly. The difference between business communications and collaboration is subtle but distinct, hinging on how workers interact, and for what purpose, while using a given tool or feature. Email, for example, enables communication -- the sharing of information -- between two or more parties. And, while those parties might exchange messages in the spirit of cooperation, communication itself isn't inherently collaborative.

Collaboration, on the other hand, involves actively and interactively working together toward an outcome. Imagine that a group of sales professionals needs to plan a client presentation. If they convene on a video conferencing platform to discuss the upcoming meeting, they are communicating. But, if they also have a shared document in the cloud -- perhaps a presentation outline or a PowerPoint file -- where each user can make changes that populate across the group's devices in real time, then they are also collaborating. While communication can exist without collaboration, collaboration is impossible without communication.

Why does the difference between business communications and collaboration matter? Vendors increasingly package an array of connectivity and productivity applications in their UC offerings, sometimes inaccurately describing communication features as collaborative. Customers should understand the difference between communication and collaboration if only to have confidence they will get the value they need from any given platform or tool.

Additional features of unified communications

UC overlaps with contact center technologies in the form of automated call distribution (ACD), interactive voice response (IVR) and automated attendant systems, video chat functionality and messaging capabilities. Integrating internal and external UC capabilities, with in-house and customer-facing communications happening on the same platform and over the same channels, can eliminate departmental silos and improve customer outcomes.

Other types of UC offerings embed enterprise communication tools into business processes. This concept, known as communications-enabled business processes, has evolved into communications platform as a service (CPaaS) and the use of communications APIs. Services such as presence, chat and telephony can be integrated into enterprise applications that span the entire organization. For example, users can launch a voice call directly within a customer relationship management (CRM) application.

Benefits of unified communications

UC is often credited with increasing employee productivity and improving collaboration because users can communicate and collaborate in a more flexible and intuitive way than the legacy phone system enabled.

Additionally, specific technologies, such as video conferencing, are linked to reduced travel costs and enhanced return on investment (ROI). Remote employees who work from mobile devices, including tablets and smartphones with audio and video capabilities and apps native to the device, are afforded more flexibility by UC.

UC can help employees in a variety of contexts. Traditional office environments, for example, accommodate users on computers and equip employees with a desktop business phone or softphone and desktop video conferencing. Conference rooms, too, are equipped with speakerphones, a shared display system and video conferencing, which might be a traditional conferencing service or a high-end telepresence system.

The benefits of unified communications can also stretch to an organization's customer base. Organizations that integrate UCaaS solutions with social media can directly engage with their customers through real-time feedback and improved customer service. This helps to boost customer satisfaction.

UC risks and security issues

The biggest security challenges a business faces when implementing and maintaining its UC infrastructure are managing users' identities and access and securing data. UC strategies focus on connecting disparate technologies operating on an array of different networks, so the challenge becomes ensuring that each disparate access point is secure, no matter the device or the network on which it is operating.

Additionally, UCaaS and bring your own device (BYOD) environments are becoming increasingly prevalent in the enterprise. Both approaches spread out an organization's data and increase the attack surface. UCaaS also places a portion of the security responsibilities in the hands of a third-party vendor and requires an organization to thoroughly vet the security practices of the service provider.

Another potential UC security vulnerability is the exploitation of open APIs. Traditionally, open communication APIs are used to streamline workflows by enabling an organization to add customizable communication features to existing applications, removing the need for employees to switch between applications for communication. However, the open nature of the API leaves room for access credentials to be stolen. If credentials fall into the wrong hands, potentially sensitive data could be leaked.

Other significant security issues enterprise UC faces as a result of compromised access procedures and poor encryption include the following:

  • content theft, in which a malicious actor intercepts enterprise traffic;
  • denial of service (DoS) attacks, in which an attacker targets specific IP ports related to UC services and overloads them with traffic to damage service; and
  • service hijacking, in which an attacker sells access to a company's UC applications, such as VoIP, and consequently causes UC costs to increase dramatically.

Organizations can take a few steps to ensure that they are practicing good access management, including the following:

  • Granular access. Define user roles and levels of authorization based on those roles to limit access to sensitive data.
  • Audit trail. Keep track of which users are accessing an API and how they are doing it. Doing this will help organizations monitor suspicious activity.
  • Encryption. Organizations using a CPaaS provider should inquire about their service provider's level of encryption.
  • Security awareness. Employees should understand the importance of data security and practice good security habits, such as creating strong passwords and using trusted networks when accessing enterprise UC applications.

Unified communications platforms

When choosing a unified communications platform, an organization should ensure that its preferred vendor offers a product that both meets the organization's unique needs and has strong security practices in place. Some popular UC platform vendors are the following:

  • Avaya offers the Avaya OneCloud UC platform. Avaya is one of the few UC vendors that still offers adequate on-premises solutions in a field that is moving swiftly to the cloud.
  • Mitel offers a range of telephony and UC options, including MiCloud, MiCollab and MiVoice, that cover businesses of all sizes. Mitel is another one of the few vendors still investing in on-premises UC solutions.
  • 8x8 Inc. offers a contact center integrated with Google Cloud's Contact Center AI, which adds real-time customer experience (CX) analytics and a virtual agent capability that can answer routine customer calls. Virtual agents can improve customer service by reducing call times.
  • CounterPath recently introduced its new team collaboration platform, Bria Teams. The cloud-based service is best suited to small and midsize businesses (SMBs). One feature of the platform is a dedicated high definition (HD) virtual meeting room, which eliminates the need for team members to schedule a physical meeting. Bria Teams and Bria Teams Pro also include chatrooms that track conversation history across multiple devices.
  • Fuze offers voice, video, team chat and collaboration tools as part of its flagship UCaaS platform. Additional UCC features include file sharing and contact center capabilities. The company guarantees 99.99% uptime.
  • Microsoft offers Microsoft Teams for Microsoft 365, which integrates chats, meetings, calls, files and collaboration tools in one place. Users can customize their Teams platform with add-ins (applications) from either a third party or Microsoft. Users can also build their own application for Teams under the Microsoft 365 Developer Program.
  • Cisco has a variety of UC products and services for on-premises deployment and the cloud, including Webex Calling, Jabber, Unity Connection for voice messaging and Single Number Reach for extensive telephony features.
  • RingCentral was an early major UCaaS player and now has one of the largest subscriber bases in the world, according to analysts. The cloud-based RingCentral Office platform has VoIP, messaging and meeting capabilities and is available in more than 40 countries.
  • Unify provides VoIP calling, video conferencing, team messaging and file sharing on its Unify Circuit platform.

Criteria an organization should consider during the decision-making process include the following:

  • Range of services. Different vendors offer different levels of service. Some vendors offer only a small range of foundational UC applications, like telephony, IM and basic conferencing, while others offer comprehensive, full-scale services, such as call recording, video, screen sharing and file sharing. Many vendors offer a large range of services and enable customers to start with the basics as needed.
  • Specialization. Different vendors are specialized in different areas of unified communications. For example, one vendor might focus on telephony-based communications, whereas another might focus mainly on mobility and collaboration. An organization should consider its use cases for a unified communications solution and choose a vendor that best applies.
  • Deployment model. Organizations can choose between implementing on-premises UC platforms, cloud-based platforms or a hybrid solution that mixes both models. Organizations with an apt IT department may consider operating on-premises solutions, whereas smaller businesses may opt for a hybrid or hosted option in which aspects of the platform are managed by a third-party provider. Many vendors are making the transition to cloud-based services.
  • Interoperability. If an organization is utilizing multiple vendors at once or a hybrid infrastructure, it should ensure that all provided platforms can function together efficiently.
  • UX. As organizations continue to adopt BYOD and mobility initiatives and the rate of device turnover increases, it becomes increasingly important to have intuitive, adaptable and unified UX to streamline the use of UC platforms on those devices. Poor UX will render an organization's UC architecture useless, no matter how well integrated its back-end services are.

What is the future of unified communications?

Several trends indicate that the unified communications market is going through a significant transformation. One major change UC users should prepare for is UC's migration to the cloud and the dominance of UCaaS over purely on-premises deployments. According to a 2020 research study conducted by research firm Nemertes, 34% of organizations use UCaaS, up from 19% in 2019. Experts anticipate that the COVID-19 pandemic will ultimately have hastened this shift, with an unprecedented percentage of the workforce now encouraged or required to work from home. In this new business environment, employees must have the ability to communicate from anywhere on a moment's notice, making cloud-based UC technology both attractive and, in many cases, necessary. Of the 528 companies that Nemertes Research surveyed, 65% reported that they were more likely to use cloud services than before the pandemic had begun.

In late 2019, vendors were already shifting their focus from on-premises products and support to investment in cloud-based products and will likely continue to do so. Organizations that plan to stick to on-premises solutions for the foreseeable future should be aware that only a select few vendors are still making a point of investing in on-premises UC and that there may not be adequate support for these infrastructures in the near future.

In addition to continued cloud migration, users can expect vendors to continue to partner up and collaborate in creating stacks of UC tools, which can help each company capitalize on the other's strengths and improve compatibility between their respective products.

For example, in 2019, Microsoft and Cisco joined forces to improve interoperability between their video conferencing room systems. This is especially notable because the companies had previously been longtime rivals. Microsoft has also teamed with the company Zoom for the same purpose.

Team collaboration tools are also expected to play a more significant role because most UCaaS vendors provide a team collaboration experience as the central UI. Right now, many organizations view these tools as simply a messaging application, but their prominence in UCaaS may influence organizations to use these tools as a full work hub.

Lastly, emergent technologies, such as artificial intelligence (AI) and machine learning, are expected to have an impact on the field, although its less clear exactly how. In addition, only 5% of companies surveyed by Nemertes used AI in their UC and collaboration experiences; 43% of companies were considering it for the future. Some possible uses for AI in UC in the near future could be to break down language barriers and to improve UX.

This was last updated in August 2020

Continue Reading About unified communications (UC)

Dig Deeper on Understanding Unified Communications