Business Phone Systems

Our Phone system services provide businesses with scalable, efficient communication solutions, ranging from traditional landline setups to advanced VoIP (Voice over Internet Protocol) and cloud-based systems.

Phone Systems Services - Chicago

Phone Systems Services

Our services ensure seamless connectivity within organizations and with clients, featuring options like call forwarding, voicemail, conference calling, and more to meet the diverse needs of modern businesses.

A New Phone System Is Calling...

Making the move to a new business phone systems and related unified communications infrastructure is a promising way to surpass the limitations of legacy business phone systems and provide your organization with better internal and customer-facing contact options.

By choosing ADC’s business phone systems, you gain access not only to top phone features but also a full-scale unified communications platform. All your business communication needs are combined under one technological umbrella, driving easy collaboration, and enabling top-quality customer service.

ADC Technologies will develop a customized approach to each client’s business phone solution. By delivering a tailored experience, ADC empowers organizations to choose how they deploy and use their phone infrastructure. Whether this means delivering a solution that fits in with your current needs, developing a scalable solution that can grow with your company, or a complete change to suit a new vision and evolving needs

When it comes to the technical capabilities of a unified phone system, the list of features that will keep your team members in contact with each other and the outside world, ADC’s business phone systems contain everything a business needs. The following are some of the most important abilities associated with this solution:

Integrated Call Management and Collaboration


  • Personalized call routing: Find Me/Follow Me call routing functionality enables a user to set customized rules for which devices ring when receiving a call, whether those phones are company-owned or external numbers. VIP functionality enables only certain priority callers to ring certain devices, lessening the chances of missing the most important calls

  • Built-in presence and chat: The connection between phones and unified communications features allows employees to quickly chat with their peers via instant message, and to view who is currently occupied on the phone.

  • Collaboration: Advanced features allow for full integration with Active Directories, Azure, Office 365, Salesforce, Video Conferencing, and Texting.

Distributed Worker Support


  • Mobile phone integration: Business phone numbers can automatically ring a mobile device via Apple and Android App, ensuring workers are always reachable during business hours.

  • Office desk phone and softphone support: By connecting a modern voice-over internet protocol (VoIP) desk phone on a broadband internet connection or a softphone application on a PC, an employee can get their office phone functionality when away from their usual desk.

  • Multiple location integration: A whole company can use the same cloud PBX system, ensuring that there is a consistent caller experience, no matter what office a person has reached. This can help organizations with many branch locations present a consistent, unified front.

Trouble-Free Administration


  • Flexible auto attendant: The auto attendant system helps route incoming calls to the right person. The menu system is flexible and customizable, allowing companies to offer a smooth customer experience.

  • Web-based administration panel: The control panel is simple to understand, so administrators can tweak settings without calling in the IT department.

  • Easy reporting: Call records and call history are easy to access and view with this reporting functionality. Administrators can view a visual representation of the current queue status to assess how a call center is running. They can also pull historical data to help with accurate, data-based employee reviews.

  • Emergency management and recovery: A quick response to unexpected circumstances can inspire confidence in an organization. This feature allows a business to set up customized call routing, automatic greetings and auto attendant options during storms or other disruptions to the office routine.

Give us a call and get started with a new business phone system today

Are you ready to seek out new options regarding your business phone systems? Companies often realize their current capabilities are lacking when going through major changes, including the following scenarios:


  • Moving an office or opening a new location

  • Going through a period of rapid expansion

  • Standardizing communications systems across multiple sites

  • Addressing a noticeable failure with a legacy system


With that said, there is no bad time to assess your communications infrastructure and make a change for the better. If your business phone system is delivering anything less than top-quality functionality and service, you have ample reason to make a quick and effective upgrade to a new unified communications system.

Clients Testimonials

Tim CornishTim Cornish
08:21 02 Oct 24
ADC is amazing. They did so much for our business when another provider dropped the ball and provided valuable, proactive solutions that streamlined our business. And they provided a scaleable plan for our future to address the problems of now for IT.
Cindy FerchenCindy Ferchen
18:46 29 Aug 24
I highly recommend Accredited Data Centers. They do a great job with our IT and website support. ADC does a great job explaining everything they do to help and support our business. When in need for help, they are always quick to respond.
Nick DeTragliaNick DeTraglia
12:21 27 Aug 24
ADC is definitely someone in business we cannot live without. They make our lives much easier, and their customer service is top notch. I would recommend to anyone without hesitation!
Kealan O'NeilKealan O'Neil
19:43 12 Aug 24
I have worked with Jeff and ADC for over 10 years and their level of service and the way they partner with their clients is such a tremendous asset. As a small business it's hard to handle all things IT within your own organiztion so with ADC they take the hassle out of all of that and have become like an extension of our organization and our team. I highly reccomend to anyone who needs a partner not just another IT company.
Cathy PriceCathy Price
21:20 19 Jul 24
My company has been working with Jeff and his team for over 5 years. I have never worked with a company that has such a "can do" attitude. There is nothing that they won't do to help you accomplish your IT goals. There are a smaller organization with big service and knowledge and you can ALWAYS get what you need on a timely basis. I have worked with bigger firms that do not come close to the service from ADC. There have been times where we have been "line down" and we can't work - it is not their fault but they drop everything and get you back up and running. They understand in this world, "You are out of business," if you don't have service. I would HIGHLY recommend Jeff and his team.
Sue Morphey-KasparSue Morphey-Kaspar
13:47 17 Jul 24
Desperately in need of help sorting out old and new systems we found Accredited Data Centers. Within 24 hours Jeff was here at Enterprise Plumbing with a solution and ready to take action. He went back to his team and came up with a seamless and affordable approach to solving our problems. We have never looked back. Jeff, Josh and the team at Accredited Data Centers are our go-to with every IT issue because they answer and offer solutions right away. Their approach is "no hard sell" and we appreciate their professional and capable demeanor. If you're looking for help and/or a true teammate to your business we highly recommend the folks at Accredited Data Centers!
Dr. Eric WardDr. Eric Ward
19:29 07 Jun 24
We partnered with ADC after two VERY unsuccessful attempts with other IT companies. Our IT system was an absolute mess, our staff were unhappy, and we were losing revenue. We chose ADC because of their approach. During our initial meetings with Jeff, the owner, and his team, they spent a great deal of time getting to know our company, our needs, and where we were struggling. Just as importantly, they let us know what we should expect from them. And they've delivered on every promise. Nearly immediate resolution of tickets, calls back within an hour or less, and a concrete IT replacement and growth plan that fits in our budget. Within 30 days of partnership initiation, the majority of our day-to-day issues had been resolved. Within 6 months we had become more efficient in our work processes. And at the one-year mark we were saving considerable money on both equipment/subscriptions and IT services. I cannot recommend ADC highly enough. As a fellow business owner, they have taken away one of my biggest ongoing headaches.
Blake MelleckerBlake Mellecker
18:00 07 Jun 24
I had a fantastic experience with Accredited Data Centers of Sugar Grove, IL. Their quality and response time are truly impressive. From the moment I engaged with them, it was clear that they prioritize customer service above all else. The owner mentioned that they see themselves as a customer service company that does IT, and they genuinely live up to that promise. The team is professional, knowledgeable, and always ready to help with any concerns or issues. I highly recommend Accredited Data Centers for anyone looking for reliable and exceptional IT services.
Parvaneh Shidnia-SmithParvaneh Shidnia-Smith
20:17 30 Oct 23
Nathan from ADC came to my work office and helped me get my phone and laptop in good working order. He was patient and made a very confusing app work like a charm. I recommend ADC highly!
Charlene CoulombeCharlene Coulombe
16:45 18 Dec 22
The MONTGOMERY ECONOMIC DEVELOPMENT CORPORATION, or commonly referenced as the MEDC, reached out to Jeff Corirossi from ADC to see if we could add a system to our conference room that would give us the opportunity to support virtual meetings in a professional atmosphere. Accredited Data Centers evaluated our needs, provided options within our budget, installed and trained us and provided top notch professional staff to get the job done. We couldn’t have asked for a better company to work with. Thank you so much for going way above our expectations! We are so proud to have you as a MEDC member and are thankful for the services you provide to both small and large businesses.
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Phone Systems

Our Phone system services provide businesses with scalable, efficient communication solutions, ranging from traditional landline setups to advanced VoIP (Voice over Internet Protocol) and cloud-based systems.