• Founded in 1983 and privately held, ATI has been providing business phone communication solutions throughout the Chicago city metropolitan area, Northern Illinois and nationally.

    Together with an associate office in Pittsburgh, PA and a trusted network of national recognized partners, we support more than 10,000 phone system customers nation-wide.

    From 10 to 10,000 phones, our installed customer base includes private, not-for-profit, government, municipalities and Fortune 500 businesses.

    Advanced Telecommunications of Illinois has partnered with the top system manufacturers to offer our customers the diversity of industry leading VOIP telephony based communication solutions and complimentary phone system products. ATI’s suite of product offerings will always stay at the forefront of industry technology. We provide cradle to grave support for our clients through scalable platforms with streamlined migration paths thus providing total investment protection for the life of your IP communications solution.

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    ATI Technical Assistance Center (TAC) 24/7

    Professional and knowledgeable on-site staff greets service and technical calls during business hours, followed by on-call technicians around the clock.


    Quality Spare Parts –
    Available when you need them

    We maintain a complete inventory for every phone system we sell & support here at our Naperville, IL office.


    State of Art Product Demo Rooms

    Don’t just take our word for it, experience it for yourself. We’ll perform a custom demonstrate and show you just how the product and specific features pertinent to your business will function.


    Pre-Launch Programming

    We leave nothing up to chance. No matter if it’s one or one hundred sites we’ll setup your system at our facility and work out all kinks to eliminate unnecessary issues when we go live at all your locations

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    IP Phones

    Where do you want your phone system? On-Site, In the Cloud, or a Hybrid Prem/Cloud Combo

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    Cloud Services

    Disaster Recovery & Backup, Virtual Desktops, Email/Exchange, Hosted IaaS

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    Internet Phone, IM, Presence, Web Collab, Contact Center, Lync, Network Services

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