Design Stories: Exploring Everyday Things

NT Displayphone User Market

The Displayphone was an ambitious technological innovation of the early 1980s that
demonstrated the influence of Northern Telecom Limited in the telecommunications industry as
well as the viability of voice and data integration. When the Northern Telecom debuted the Displayphone in 1981, it entered a world in transition—personal computing was on the rise, corporate communication was evolving, and businesses were beginning to embrace digital workspaces. However, this innovation came at a time of economic uncertainty, making widespread adoption a challenge.

The early 1980s recession caused businesses and rare individual users alike to be cautious with their spending, making investments in new and experimental technology riskier. At the same time, the personal computing revolution was underway, with IBM releasing its first PC in 1981, shifting corporate priorities toward computers over standalone communication devices. Additionally, existing technologies like fax machines, Telex systems, and early email services already provided reliable business communication, making the Displayphone seem like an expensive and unnecessary alternative. Another major barrier was the network infrastructure—video calls required compatible systems on both ends, something that was not yet widespread. Despite these challenges, Northern Telecom positioned the Displayphone as a futuristic innovation, hoping it would revolutionize the way businesses and professionals communicated. 

While Northern Telecom experienced strong sales growth through the 1970s, the Displayphone struggled to compete with emerging technologies in the mid 1980s. The rise of personal computing, particularly with the release of the IBM PC 5150 in 1981, shifted business investments away from standalone voice/data terminals and toward multi-functional digital solutions. The increasing adoption of networked communication and email also reduced the need for dedicated video-telephony devices. As a result, the Displayphone remained a niche product, failing to achieve mainstream success.




Despite its limited commercial impact, the Displayphone generated excitement among technology enthusiasts and early adopters, who saw its potential for transforming business communication. However, the device’s complexity and lack of widespread compatibility made integration difficult. By the mid-1980s, shifting technological priorities led to its decline, and the Displayphone ultimately became a transitional innovation rather than a long-term industry staple.

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