For years, enterprise communications strategy has been shaped almost entirely around the needs of desk-based knowledge workers.
Collaboration platforms, video conferencing tools, and messaging apps have proliferated at pace – yet the workers who operate at the sharp end of the business, on hospital wards, in manufacturing plants, in retail stores, in logistics depots, have largely been left behind.
A recent survey from Mitel confirms this and shows that 63% of desk and frontline workers feel pressured “to make it work” even when systems are not designed for their needs.
And the consequences of ignoring it are becoming impossible to overlook.
"The workforce is becoming much more fragmented, and at the same time, much more interdependent," says Luiz Domingos, Chief Technology Officer at Mitel.
“The issue is that many organisations are still trying to connect workers with the same tools, which ultimately results in completely different experiences – and at the end of the day, that creates friction."
The consequences of that friction are no longer just a productivity concern. They are an operational one.
Communications as a Critical Infrastructure
The shift in how organisations think about communications is fundamental.
For much of the past decade, collaboration technology was positioned as a layer on top of the business – a productivity enabler, a cost centre, a feature set. That framing is changing rapidly.
"Communications is no longer just a productivity layer," Domingos argues. "It's becoming part of the operational system of the business. If communication breaks down, the business slows down."
In time-sensitive, high-pressure environments, that breakdown doesn't just cause delays – it creates risk.
In healthcare, a missed alert or a failed handover can have serious consequences. In emergency services, it can be the difference between a timely response and a critical failure. In logistics, a communication gap between a dispatcher and a field operative can unravel an entire supply chain.
This is the reality driving a new approach to communications architecture – one that treats connectivity not as a feature, but as infrastructure.
The shift is towards embedded, always-on, mission-critical communications designed to work under pressure, at the edge of the network, and in the hands of workers who cannot afford for their tools to let them down.
Defining Mission-Critical
The term "mission-critical" gets used frequently in enterprise technology, but it is rarely defined with precision.
Domingos is direct about what it means in practice.
"Mission critical communications are communications that have to work every single time, especially under pressure – real time, reliable, zero downtime. And they need to operate within strict security and compliance constraints."
This is not simply a matter of uptime. It encompasses data sovereignty, compliance with regulatory frameworks like GDPR, and security certifications such as SOC 2 and ISO 27001. For Mitel, these requirements are not optional add-ons, they are foundational.
"It's not only about the features," Domingos says.
"For mission critical, it's about trust when everything is on the line. You need not just availability – you also need control over data and operations. Otherwise, an element of the big picture is broken."
The Return of Voice
One of the more striking developments in frontline communications is the resurgence of voice.
After years of being overshadowed by messaging and video collaboration tools, voice is reasserting itself as the primary communications channel for workers in demanding environments. Mitel’s recent survey showed that 83% of frontline workers turn to voice communications when a situation requires rapid action.
"Voice never went away, it was just undervalued for a while," says Domingos.
