Over 40 Years in BusinessISO 27001 compliantPublic sector: GSA contract holder
LA 562-298-5000 · Chicagoland 312-432-5300 · Phoenix 602-733-6807 · Client Support
Over 40 Years in BusinessISO 27001 compliantPublic sector: GSA contract holder
LA 562-298-5000 · Chicagoland 312-432-5300 · Phoenix 602-733-6807 · Client Support
Help desk, on site engineers, Microsoft 365, networks, backups and security for DuPage County organizations with around 20 or more users. Fully managed or co-managed with your IT team, from a provider that also runs your cameras, doors and phones if you want one partner.
BTI Communications Group, LTD. provides managed IT services to DuPage County businesses from its Downers Grove office, and has been in business for over 40 years. Our help desk, on site engineers and 24/7 NOC/SOC support companies in Naperville, Oak Brook, Downers Grove, Wheaton, Lombard, Elmhurst, Itasca and across DuPage County. Call 312-492-2613 or book a free IT consultation.
On this page: Support modelsWhat is includedSwitching providersIndustriesProjectsAreas servedFAQ
DuPage County has more than 5,000 establishments with 20 to 499 employees: corporate and regional offices in Oak Brook, Downers Grove, Lisle, Naperville and Itasca, manufacturers and distributors in Addison, Wood Dale, Bensenville, Carol Stream and West Chicago, medical groups across the county, and schools, villages and park districts. Our clients usually look like one of these:
Tickets wait for days, the same problems repeat and no one plans ahead. You want a team with depth and documented processes.
Your internal team handles strategy and users, and wants help desk overflow, after hours coverage, security tools and project hands.
An office in Oak Brook, a plant in Addison and a branch in Naperville need one standard for networks, devices and security.
A customer audit, a cyber insurance renewal or a public agency requirement needs controls in place and documented.
| Fully managed IT | Co-managed IT | |
|---|---|---|
| Good fit for | Companies without internal IT staff | Companies with an IT manager or small team |
| Help desk | BTI is your help desk for every user | BTI takes overflow, after hours or specific queues |
| Security tools | BTI provides and runs the stack | Shared, with clear ownership of each tool |
| Strategy | Regular planning with a BTI technology lead | Your IT leader sets direction, we execute |
| Learn more | Managed IT services | Co-managed IT support |
Not sure which fits? Compare them in the fully managed vs co-managed comparison or the shared responsibility model.
Phone, email and portal support for your users, with tickets tracked from open to close. See help desk services.
Engineers dispatched from our Downers Grove office for hardware, network and move work that cannot be done remotely.
Servers, networks, firewalls and backups watched by our 24/7 NOC/SOC, with alerts handled before users notice.
Licensing, email, Teams, SharePoint, Intune and identity managed for you.
Switching, firewalls and wireless designed for offices, clinics, plants and warehouses, from a Cisco Select Partner. See managed infrastructure.
Operating system and application updates, endpoint protection and device lifecycle tracking.
Backups for servers, cloud data and Microsoft 365, tested restores and a written recovery plan.
MFA, email security and managed detection and response. See cybersecurity in DuPage County.
Regular reviews of tickets, risks, budgets and the technology roadmap with your leadership.
Changing providers worries most companies more than it should. A planned transition keeps users working while we take over.
More detail: switching IT providers.
Download the 2026 Executive Guide to Managed IT and Cybersecurity (PDF).
Conference rooms, Microsoft 365, Wi-Fi and secure remote access for headquarters and regional offices along I-88 and in Oak Brook.
Accounting, law, insurance and financial advisory firms that need secure remote work, document systems and client data protection.
Shop floor networks, ERP, CAD workstations, scanners and label printers for plants and warehouses in Addison, Itasca, Wood Dale, Bensenville and Carol Stream. CMMC and other compliance work is completed and contracted by BTI and its partners, including top industry professionals in each category.
Practice systems, imaging workstations and secure messaging for medical groups, dental and behavioral health practices across DuPage County.
Networks, phones, help desk and security for districts, villages and park districts that buy through GSA or cooperative contracts.
Field teams on tablets, project sites coming and going and property portfolios that share IT.
Managed clients and project clients both use our engineers for the larger work that a help desk cannot absorb.
See all IT projects.
Whether you choose BTI or someone else, these questions separate a provider with real depth from one that will struggle as you grow.
| Ask this | Why it matters | How BTI answers |
|---|---|---|
| Who answers when I call? | Small shops route calls to one or two people who may be on site elsewhere. | A staffed help desk backed by 400+ engineers and a 24/7 NOC/SOC. |
| Who owns our admin passwords and domains? | Some providers keep control, which makes leaving painful. | Your company owns every account. We document access and hand it over on request. |
| How are security tools chosen and managed? | Unmanaged tools give a false sense of safety. | Security is built into managed IT, and alerts are handled by our NOC/SOC. |
| What happens when we need on site help? | Remote only providers cannot replace a switch or run cable. | Engineers drive from our Downers Grove office, within about 13 miles of every DuPage city we serve, and the same company handles cabling, phones and building systems. |
| How do you show what we are paying for? | Bundled pricing hides what is and is not included. | Itemized proposals and regular reviews of tickets, risks and the roadmap. |
| Can you support our compliance needs? | Customers, insurers and auditors expect evidence, not promises. | ISO 27001 compliant governance at BTI, and compliance work through BTI and its partners. |
New offices, acquisitions, audits and growth are scoped as projects with a named engineer and a written plan, so the help desk keeps running normally.
Proposals are built from your user count, devices, locations and the support model you choose, and every line is itemized so you can see what you pay for. Pricing is shared after a short discovery call, not guessed on a web page. Read more on how BTI prices managed IT. Financing at 3.99% is available for qualified buyers, subject to credit approval, for hardware and projects.
Most support is remote and fast. When you need someone on site, engineers leave from our Downers Grove office. Every DuPage city we serve is within about 13 miles of the office in a straight line, so on site visits are a short drive, and remote support and our 24/7 NOC/SOC cover every site around the clock.
Within about 5 miles of 1441 Branding Ave. Same day visits are routine.
About 5 to 10 miles west. Corporate offices, research and technology firms, medical groups and light industrial buildings along I-88.
About 6 to 13 miles north. Distribution, manufacturing and office parks near I-290, I-355 and the airport.
Schaumburg, Arlington Heights and the rest of the northwest suburbs, and Aurora and the Fox Valley, are served from the same office through the BTI Chicago pages.
See all BTI services in the county on the BTI DuPage County hub, or managed IT across Chicagoland.
1441 Branding Ave, Suite 200
Downers Grove, IL 60515
IT sales: 312-492-2613
Main office: 312-432-5300
24/7 support: 800-HELP-BTI (800-435-7284)
Monday to Friday, 8:00 AM to 5:00 PM CT
BTI Communications Group, LTD. serves Chicago and the surrounding suburbs. Pick your area for local services.
Chicago and Chicagoland businesses.
Western suburb businesses, served from our Downers Grove office.
Schaumburg corridor and Cook County northwest suburb businesses, served from our Downers Grove office.
Over 40 years of IT, security and communications work. Call 312-492-2613 or book a free consultation.
Get a free consultationOur Chicagoland office and engineers are in Downers Grove, near I-88 and I-355.
400+ engineers across IT, networks, communications and security, so complex issues do not stall.
IT, phones, cameras, access control and cabling from one team that already knows your site.
ISO 27001 compliant governance, independently reviewed through the TAG ISO 27001 Compliance Program.
GSA contract holder (47QTCA21D00BA). Financing at 3.99% is available for qualified buyers, subject to credit approval.
Decades of installs, support and service, with a Chicagoland office in Downers Grove.
See how we support each industry's systems and requirements.
BTI Communications Group, LTD. provides fully managed and co-managed IT to DuPage County businesses from its Chicagoland office in Downers Grove, with a help desk, on site engineers and a 24/7 NOC/SOC. We support companies in Naperville, Oak Brook, Downers Grove, Wheaton, Lombard, Elmhurst and Itasca.
Yes. Our Chicagoland office is at 1441 Branding Ave, Suite 200, Downers Grove, IL 60515. Call 312-492-2613.
Every DuPage city we serve is within about 13 miles of our Downers Grove office in a straight line, so on site visits are a short drive. Remote support starts right away.
With managed IT, BTI is your IT department. With co-managed IT, your internal IT team keeps strategy and ownership, and BTI adds help desk capacity, after hours coverage, security tools and project engineers.
Cost depends on users, devices, locations and the support model. BTI shares an itemized proposal after a short discovery call so you can see exactly what is included.
Most transitions follow a planned onboarding of discovery, access handoff, tool rollout and help desk go live. Users keep working throughout.
Yes. We manage licensing, email, Teams, SharePoint, OneDrive, Intune and identity, along with backups for Microsoft 365 data.
Yes. Our 24/7 NOC/SOC monitors systems around the clock and handles alerts as they happen. Ask about after hours help desk coverage for your users during the consultation.
Yes. Co-managed IT is built for that. We fill the gaps your team names, from help desk overflow to security operations.
Yes. BTI provides security cameras, access control, business phones and cabling, so one partner can support the whole building.
A free consultation reviews your current support, risks and goals, and you leave with clear next steps.