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
Cloud VoIP, Teams calling, IP desk phones and paging designed, installed and supported for offices, clinics and warehouses in Schaumburg, Palatine, Arlington Heights and Elk Grove Village.
Existing client? 24/7 support: 800-HELP-BTI
Tell us about your users, sites and current carrier. A BTI engineer replies within one business day.
Prefer to talk? Call 312-492-2613. Never send passwords or license keys through this form.
Our Downers Grove team installs and supports phone systems across the Northwest Suburbs, roughly 12 to 25 miles away.
BTI designs, quotes, installs and supports cloud and on premises phone systems, Teams calling, paging and cellular boosters. Choose a tab to see the field work.
Pick the work you need now and the responsibilities that continue after go live. Each item is itemized in your proposal.
Hosted phone service with features your team uses.
Teams calling when licensing and devices fit.
Numbers moved on a validated schedule.
IP phones programmed and labeled.
Overhead and IP paging zones.
Auto attendants, hunt groups and after hours routing.
Voice quality, PoE and QoS checked first.
Moves, adds, changes and fixes with a named owner.
Choppy calls usually come from the network, not the phone. We check internet, switching, power and QoS before cutover, then test calls at real desks.
We port numbers on a validated schedule and keep the old service in place until the new one is proven.
See the steps BTI follows for a clean cutover.
Users, sites, licenses, devices and the phone system problems you need solved.
A written scope with licensing, labor and responsibilities listed separately.
A small pilot first, then waves scheduled around your business hours.
Named owners for changes, users and renewals, with help in real time.
Multi-site organizations get one standard for naming, users, permissions and support, while each building keeps the design its layout needs.
Regional offices in Schaumburg need call flows that follow staff to Teams and mobile. Warehouses in Elgin and Elk Grove Village need overhead paging and phones that work on the floor.
Before you sign, compare recurring charges and one time work separately, and ask how porting and outages are handled.
Cloud voice, Teams calling and contact center solutions shaped around how your industry communicates.
Teams calling, contact center and patient call routing for clinics and medical groups.
Healthcare phone systems →
Cloud voice and Teams calling for city, county and public agency staff.
Government phone systems →
Cloud voice, Teams calling and front office phone systems for schools and districts.
School phone systems →
Teams, paging and floor communications that keep every shift connected.
Logistics and manufacturing communications →
Cloud phone systems and Teams calling for CPA, tax, title and mortgage firms.
Phone systems for CPA and title firms →
Cloud voice with on-call routing and an AI receptionist for outage call spikes.
Phone systems for water utilities →
Mobile phone systems that follow crews from the office to the job site.
Construction phone systems →
Phone systems, paging and alerts for churches, ministries and nonprofit offices.
Church and nonprofit phone systems →
Parking call boxes, intercoms and venue phone systems on one platform.
Parking call boxes and venue phone systems →Government & public sector
BTI is a GSA Approved Contractor
GSA contract (all states) for business phone and security systems. CMAS and TESMA for California public agencies only. ISNetworld member contractor.
Governance & assurance
Certifications, attestations & compliance-aligned frameworks
Certifications, attestations, and compliance programs shown may apply to BTI, BTI’s internal governance practices, or BTI’s third-party service providers depending on the specific platform, service, data center, processor, monitoring provider, or vendor used.
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.
North Shore and Lake County businesses, served from our Downers Grove office.
Joliet, Bolingbrook, Romeoville and Plainfield businesses on the I-55 corridor, served from our Downers Grove office.
Aurora, Batavia, Geneva and St. Charles businesses along I-88, served from our Downers Grove office.
Hammond, Gary, Merrillville, Portage and Valparaiso businesses, served from our Downers Grove, Illinois office.
Over 40 years of IT, security and communications work. Call 630-343-1322 for security or 312-492-2613 for IT, or book a free consultation.
Get a free consultationYes. BTI designs, installs and supports business phone systems for Schaumburg, Palatine and the Northwest Suburbs from our Downers Grove office.
Usually. We confirm portability with your current carrier and keep the old service active until the port is validated.
It depends on your call flows, devices, sites and support needs. We compare the options that fit your requirements.
Teams Phone can fit, subject to licensing, numbers, devices and emergency calling needs. We review all of them first.
It depends on the design, power protection and backup routes. We set and test the agreed fallback.
Yes. We install paging speakers and zones for offices, showrooms and warehouses.
It depends on users, features, equipment and implementation. We quote recurring and one time costs separately.
BTI offers 100% financing for parts, labor and licensing at 3.99% for five years. Project-only, co-managed and fully managed scopes are all available.
Sales inquiries get a reply from a BTI engineer within one business day. Managed support clients reach the team in real time by phone, and client emails get a reply within 15 minutes.
Schaumburg, Arlington Heights, Elgin, Palatine, Hoffman Estates, Elk Grove Village, Des Plaines, Rolling Meadows, Mount Prospect, Wheeling, Buffalo Grove, Itasca and nearby communities, from our Downers Grove office.
1441 Branding Ave, Suite 200, Downers Grove, IL 60515. Call 312-492-2613.
Our Downers Grove office is roughly 12 to 25 miles from most Northwest Suburbs communities. Projects are scheduled at your site or delivered remotely.
Service areas
Bring your inventory, site plans and the problem you want solved. You get a design, an itemized proposal and a clear support scope.
