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Your Business Communication Technology

Call One is a unique, full service technology/telecommunications company for mid-market firms, located in Chicago, IL. Working with over 60 leading carriers, we consolidate and unify your voice, data and mobile communications – giving you more time and energy to focus on your core business.

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Experience a Level of Customer Service You Never Thought Possible
Our customer retention rate is 97%
A big part of the reason is our personal, attentive, expert and thorough customer care.

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Consolidate for Convenience and Accountability
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Simplicity is the ultimate form of sophistication. - Leonardo Da Vinci
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Not Just a Seat on the Technology Train

How would you like a telecommunications system customized around your business needs? Whether you need voice services, data products, SIP trunking or Internet services, Call One provides it all. You receive a single invoice, even while you enjoy the benefits of multiple carriers.

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Stay Flexible
Capitalize on Technology Innovation

Stay nimble, efficient and scalable. Call One constantly investigates new technologies to introduce to our clients to keep them on the technical edge.

By Life Safety and Child Safety Organizations

We have a 20-year track record of helping organizations streamline and upgrade. Among our thousands of customers are police departments, school districts and municipal governments. If life safety and child safety organizations trust us to keep the lines of communication open 24/7/365, you can, too.

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Working Together We Do Great Things™

Philanthropy is a key part of everyday life at Call One. Our team is actively involved in a wide range of charitable efforts.

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Call One In Action

Because Call One is the Suburban Purchasing Cooperative’s preferred provider, we accepted their offer to audit our phone bills. When we learned how much we could save, without having to switch from the AT&T infrastructure, we moved to Call One service right away. For over 5 years we’ve benefitted from their amazing customer service and their dedication to keeping us informed of any additional savings they can offer.

Mark Bologa, Executive Director,
DuPage Mayors and Managers Conference
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