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
Card, mobile and cloud access control for offices, multi-tenant buildings, medical groups, plants, warehouses, schools and public agencies in Naperville, Oak Brook, Downers Grove, Wheaton, Elmhurst and across DuPage County. New systems, upgrades and takeovers of systems another company installed.
BTI Communications Group, LTD. installs and supports commercial access control across DuPage County from its Chicagoland office in Downers Grove, and has been in business for over 40 years. We design, install and take over Brivo, Avigilon Alta (formerly Openpath), Avigilon Unity, Kantech, RS2, Axis, Software House C-CURE 9000 and Alarm.com for Business systems. Call 630-343-1322 or book a free site survey.
On this page: By building typePlatformsTakeoversInstallation stepsIllinois rulesCities servedFAQ
Oak Brook, Downers Grove, Lisle, Naperville and Itasca are home to headquarters and regional offices with lobbies, elevators, parking structures and suites. We set up entry by department and floor, visitor check in at the front desk and lockdown from one screen.
Property managers need common doors, garages and elevators on one system, with each tenant managing its own people. Cloud platforms let a building manager and a tenant admin each see only what they should.
Staff only corridors, medication rooms and records rooms need access by role and an audit trail, while patient entries stay welcoming during clinic hours.
Plants and warehouses in Addison, Itasca, Wood Dale, Bensenville, Carol Stream and West Chicago need restricted zones, shift schedules, contractor badges and dock and gate control.
Public buildings need lockdown from one button, visitor screening at the main office and schedules that change with the school year, events and elections.
Snow, ice and salt are hard on exterior doors and gates. We choose readers, enclosures and door hardware rated for Chicagoland winters and plan heaters or covers where needed.
We are not tied to one brand. We recommend the platform that fits your building, your IT team and the hardware already on your doors, and we can run more than one where a portfolio already has a mix.
| Platform | Where it fits in DuPage County | Learn more |
|---|---|---|
| Brivo | Cloud access for multi-site operators and property managers. BTI designs, sells, installs, supports and takes over existing Brivo accounts. Eagle Eye cloud video is part of Brivo. | Brivo |
| Avigilon Alta (formerly Openpath) | Cloud and mobile first access with touchless entry, a good fit for offices, clinics and multi-tenant buildings. | Avigilon Alta access control |
| Avigilon Unity | On premises access and video from one platform for large plants, campuses and distribution buildings. | Avigilon Unity access control |
| Kantech | EntraPass for sites that want an owned, on premises system with optional web and mobile access. BTI is a Kantech Global Edition Certified Partner. | Kantech EntraPass |
| RS2 (Acre) | Enterprise access control for organizations with many doors, buildings and complex schedules. | RS2 access control |
| Axis | Network door controllers and intercoms from an Authorized and Certified Axis Gold Partner. | Axis access control |
| Software House C-CURE 9000 | Enterprise access control with deep video integration for large and regulated sites. | Software House C-CURE 9000 |
| Alarm.com for Business | Access control, video and intrusion in one app for smaller offices and branch sites. | Alarm.com access control |
Not sure which way to go? Compare cloud and on premises options in our cloud access control overview, or download the 2026 Commercial Access Control Systems Guide (PDF).
Both are good choices. The right one depends on how many sites you run, who manages users and what your IT team wants to host.
| Question | Cloud (Brivo, Avigilon Alta) | On premises (Kantech, Avigilon Unity, C-CURE, RS2) |
|---|---|---|
| Who manages users? | Any admin from a browser or phone, from anywhere | Usually a workstation on your network, with optional web clients |
| Several buildings across the suburbs? | One account for every site, no servers | A central server with each site linked over your network |
| Internet outage at a site? | Panels keep making decisions locally and sync later | Not affected, the system runs on your network |
| Updates | Delivered by the platform | Planned with your IT team |
| Good fit | Offices, branch sites, property portfolios | Plants, campuses, schools and large distribution buildings |
Many calls start the same way: the installer closed, sold the business or stopped answering, and no one has the admin login. We take over existing systems, and Brivo accounts in particular, without replacing hardware that still works.
Every project is quoted in writing after the survey, with each door and license itemized. Financing at 3.99% is available for qualified buyers, subject to credit approval.
Locked doors must still let people out with one motion. Electrified locks, maglocks and delayed egress devices are designed to the building and fire codes your village has adopted, and we work with your contractor and the local fire district on approvals.
Fingerprint and face readers collect biometric data covered by the Illinois Biometric Information Privacy Act, which requires a written policy and consent. Most DuPage clients choose cards or mobile credentials instead; if you want biometrics, we follow the process your legal counsel sets.
Readers, intercoms and door operators are mounted at accessible heights under the Illinois Accessibility Code and ADA standards, and automatic openers are coordinated with access control so a badge or button opens the door.
Door events, user changes and admin actions are logged, so you can answer an auditor, insurer or investigator with facts.
A badge event means more with video beside it. We connect doors to security cameras in DuPage County so a denied badge or a forced door opens the matching clip, and we link access control with intrusion alarms so the building arms itself when the last person badges out.
Access control lives on your network, so it should be secured like the rest of your IT. Our IT team segments door controllers, keeps firmware current and watches for problems through the 24/7 NOC/SOC. If you also want IT support, see managed IT in DuPage County.
Our Chicagoland office is in DuPage County, at 1441 Branding Ave, Suite 200, in Downers Grove, near I-88 and I-355. 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 everything BTI does in the county on the BTI DuPage County hub, or access control across Chicagoland.
1441 Branding Ave, Suite 200
Downers Grove, IL 60515
Security line: 630-343-1322
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
Illinois license 127.001638
BTI Communications Group, LTD. serves Chicago and the surrounding suburbs. Pick your area for local services.
Chicago and Chicagoland businesses.
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 crews are in Downers Grove, a short drive from every DuPage city.
We install eight access control platforms, so the recommendation follows your building, not a quota.
Access control, video, alarms, networks and cybersecurity come from one accountable partner.
We step in when another installer is gone and keep the hardware that still works.
Kantech Global Edition Certified Partner and Authorized and Certified Axis Gold Partner. GSA contract holder (47QTCA21D00BA).
ISO 27001 compliant governance, independently reviewed through the TAG ISO 27001 Compliance Program.
Access control is one part of a security plan built around your industry. See how we approach each one.
BTI Communications Group, LTD. designs, installs and supports commercial access control for DuPage County businesses and public agencies from its Chicagoland office in Downers Grove, including Brivo, Avigilon Alta (formerly Openpath), Avigilon Unity, Kantech, RS2 and Axis.
Yes. Our Chicagoland office is at 1441 Branding Ave, Suite 200, Downers Grove, IL 60515, within about 13 miles of every DuPage city we serve in a straight line. Call 630-343-1322.
Yes. After you confirm ownership, we arrange the dealer or account change with the manufacturer, inventory every door, clean up users and schedules and fix what is failing. BTI designs, sells, installs, supports and takes over existing Brivo accounts.
You can, but the Illinois Biometric Information Privacy Act requires a written policy and consent before biometric data is collected. Most clients choose cards or mobile credentials. If you want biometrics, we follow the process your legal counsel sets.
Yes. Common doors, garages and elevators run on one system, and each tenant can manage its own users where the platform supports it.
After a free site survey we send a written, itemized proposal that lists every door, device and license. Financing at 3.99% is available for qualified buyers, subject to credit approval.
Often. Many strikes, maglocks, exit devices and door contacts can stay. The survey shows which openings can reuse hardware and which need new readers or locks.
Yes. Brivo, Avigilon Alta and Kantech all support mobile credentials, and cards and phones can work side by side during a phased switch.
Yes. BTI holds GSA contract 47QTCA21D00BA. Ask about cooperative purchasing options during your consultation.
We choose exterior readers, enclosures and door hardware rated for cold, snow and salt, and add heaters, covers or door sweeps where needed.
A free consultation covers a site survey, a door schedule and a written scope you can share with your leadership.