Ready to Revolutionize Your Business Communications
Contact BTI today to discover how to enhance your operations and keep your team connected, productive, and secure.
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
BTI Communications Group designs, sells, installs and supports business phone and VoIP systems from our Downers Grove office. BTI has Over 40 years in business and has delivered commercial security since the 2010s. Offices, warehouses and corporate campuses from Waukegan through Libertyville need calling that names main numbers, after-hours coverage and who can change menus. BTI evaluates Teams Phone, GoodPhone, supported cloud platforms, carrier services and existing-system options against actual requirements.
At BTI, we specialize in a range of communication channels including VoIP phone services and cellular technologies, ensuring seamless integration of digital channels for small businesses and large enterprises alike.
Eliminate your communication pain points by leveraging our advanced contact center software and VoIP phone service, designed to streamline your operations and empower your team to achieve their highest potential. With our omnichannel contact centers, experience unlimited calling and mobile phone integration, ensuring your small business stays connected through various communication channels.
At BTI, we are proficient in setting up and maintaining various communication systems, including VoIP technology and traditional phone systems, ensuring your business has access to top-notch internet service and mobile phone connectivity. We specialize in integrating digital channels and applications, designing call flows, and routing, making us a reliable partner for small businesses and enterprises looking to maximize sales and enhance their communication channels.
Have offices northwest of the city? See Business phone systems in the Northwest Suburbs.
Our promise is that our GlobalView support services will ensure smooth functioning of your business collaboration solutions.
Our services include remote monitoring and management for VoIP providers, internet providers, SAAS solutions, and critical network infrastructure.
Our team of mobile service experts in Arizona promptly responds to any issues remotely or on-site. Our first and primary goal is to deliver you the foremost level of technical quality that can be delivered reliably for your budget.
BTI is aware that every organization has different needs. That’s why, the first step in our Meraki installation service is a free on-site assessment to study and design a plan that fits your unique networking and security needs and budget.
Once we’ve identified your unique needs and requirements our team of Authorized Cisco Meraki engineers will design the perfect gameplan and next steps for your organization that portray the exact costs and needs of the project in the most effective and affordable way possible, no-hidden fees!
Our Cisco Meraki Engineers use the best materials and technology to give your business or organization a network set-up that will withstand network intensive stress.
Call or text us today to speak with one of our communication specialists
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 →Governance & assurance
Held by the platforms and providers BTI resells or uses
These certifications, audits and attestations belong to the third-party platforms and providers, not to BTI. Which ones apply depends on the specific platform, service, data center, processor, monitoring provider, or vendor used in your solution. Ask us which apply before you buy.
Federal Contract Vehicle
BTI is a GSA contract holder (47QTCA21D00BA), so federal agencies and other eligible buyers can purchase through our GSA Schedule.
State & Local
CMAS contract awardee (California), serving state and local government entities, educational institutions and other eligible California public organizations.
LA County Agreement
A TESMA contract awardee under the Los Angeles County Telecommunications Equipment & Services Master Agreement, available to Los Angeles County agencies and other eligible public organizations.
Contractor Compliance
We are always ready and eager to assist you, whether it’s through a phone call or an email. At BTI Communications Group, your satisfaction is our goal.
See every BTI IT and security service in Lake County IL on our BTI Lake County IL hub.

Contact BTI today to discover how to enhance your operations and keep your team connected, productive, and secure.
Providing certified expert business security, IT products & software, VoIP, communication, AI & automation installation, service, and support in the following areas: Lake County IL, Evanston, Schaumburg, Northbrook, Skokie, Hoffman Estates, Rolling Meadows, Des Plaines, Elk Grove Village, Glenview, Arlington Heights, Tinley Park, Barrington, Mount Prospect, Wheeling, Palatine, Morton Grove, Wilmette, Park Ridge, Westchester, Oak Park, River Forest, Bartlett, Melrose Park, Winnetka, Bridgeview, Niles, Orland Park, Homewood, Lincolnwood, Hanover Park, Riverside, Berwyn, Oak Lawn, La Grange, Western Springs, Elmwood Park, River Grove, Alsip, Palos Hills, Franklin Park, Streamwood, Oak Forest, Forest Park, Hickory Hills, Chicago Heights, Chicago Ridge, Palos Heights, Cicero, Schiller Park, Countryside, Blue Island, Calumet City, Harvey, Park Forest, Evergreen Park, Glencoe, Brookfield, South Holland, Broadview, Summit Argo, Lemont, Harwood Heights, Hillside, Lyons, Markham, Stone Park, Kenilworth, Glenwood, Flossmoor, Bellwood, Willow Springs, Prospect Heights, La Grange Park, Country Club Hills, Hazel Crest, Burbank, Bedford Park, Palos Park, Lansing, Midlothian, Matteson, Berkeley, Robbins, and Posen.
Providing certified expert business security, IT products & software, VoIP, communication, AI & automation installation, service, and support in the following areas: Naperville, Oak Brook, Lisle, Downers Grove, Itasca, Elmhurst, Lombard, Glen Ellyn, Woodridge, Warrenville, Addison, Villa Park, Hinsdale, Westmont, Wood Dale, Wheaton, Willowbrook, Bloomingdale, Roselle, Bensenville, Wayne, Carol Stream, Glendale Heights, Darien, Clarendon Hills, West Chicago, Elgin, Geneva, Batavia, Montgomery, North Aurora, Dundee, Hampshire, South Elgin, Carpentersville, Saint Charles, Burlington, Plato Center, Maple Park, Kaneville, Sugar Grove, Eola, and Aurora.
Providing certified expert business security, IT products & software, VoIP, communication, AI & automation installation, service, and support in the following areas: Deerfield, Lake Forest, Highland Park, Vernon Hills, Libertyville, Lincolnshire, Mundelein, Gurnee, Grayslake, Waukegan, North Chicago, Fox Lake, Lake Bluff, Round Lake, Wauconda, Long Grove, Antioch, Ingleside, Wadsworth, Highwood, Lake Villa, Zion, Winthrop Harbor, Russell, Lake Zurich, Crystal Lake, Woodstock, Cary, Marengo, Lakewood, Wonder Lake, Harvard, Ringwood, Island Lake, Union, Richmond, Alden, Lake In The Hills, Algonquin, Buffalo Grove, and Mchenry.
Providing certified expert business security, IT products & software, VoIP, communication, AI & automation installation, service, and support in the following areas: Bolingbrook, Romeoville, Joliet, Plainfield, Mokena, Frankfort, New Lenox, Manhattan, Beecher, Crete, University Park, Crest Hill, Shorewood, Channahon, Minooka, Coal City, South Wilmington, Braceville, Oswego, Yorkville, Plano, Bristol, Malta, Sycamore, Genoa, Kingston, Waterman, and Sandwich. Also serving the Northwest Indiana and Kenosha County, Wisconsin communities of Merrillville, Valparaiso, Crown Point, Gary, Highland, Schererville, Whiting, Chesterton, Lowell, Munster, Hammond, Rensselaer, Saint John, Hobart, Kenosha, and Pleasant Prairie.
Providing certified expert business security, IT products & software, VoIP, communication, AI & automation installation, service, and support in the following areas: Merrillville, Valparaiso, Crown Point, Gary, Highland, Schererville, Whiting, Chesterton, Lowell, Munster, Hammond, Rensselaer, Saint John, and Hobart.
Providing certified expert business security, IT products & software, VoIP, communication, AI & automation installation, service, and support in the following areas: Kenosha and Pleasant Prairie.
Ready when you are
Rebecca Gadomski · Edgewood Clinical
Prefer to talk? 1-312-492-2613
Use this Buyer’s Guide to plan a business VoIP system in Lake County IL. Start with a site survey, call paths, queues and who answers the main number, and confirm how handsets, auto-attendants and after-hours routing will be used day to day. BTI designs, sells, installs and supports business VoIP systems, and evaluates Teams Phone, GoodPhone, supported cloud platforms, carrier services and existing-system options against actual requirements.
A typical Lake County IL project covers survey and scoping, a line item proposal, installation and testing, integrations, and admin training. 4-hour onsite emergency response is available under BTI support agreements. Emergency support is available 24/7. Call 800-435-7284.
These are planning examples, not claims of named customers or completed local installations.
This is a planning scenario, not a claimed BTI customer. A Libertyville office wants Teams Phone, a clean auto-attendant and a named after-hours group.
This is a planning scenario, not a claimed BTI customer. A Waukegan warehouse wants durable floor handsets and a shipping line that follows dock hours.
This is a planning scenario, not a claimed BTI customer. A Vernon Hills firm with a Mundelein shop wants one calling standard and a documented cutover window.
BTI designs, sells, installs and supports business phone and VoIP systems for Lake County, Illinois organizations from our Downers Grove office. BTI evaluates Teams Phone, GoodPhone, supported cloud platforms, carrier services and existing-system options against actual requirements.
Professional offices in Libertyville and Vernon Hills need auto-attendant and suite-level calling. Warehouses and light industrial sites in Waukegan and Gurnee often combine dock-desk phones, a main number and a named support path. Multi-site Lake County firms want one design standard and admin training.
A typical Lake County IL project starts with a survey of numbers, call flows and site conditions, then a line item proposal, installation and testing, cutover, and admin training. BTI evaluates Teams Phone, GoodPhone, supported cloud platforms, carrier services and existing-system options against actual requirements. The written scope names handsets, call queues, carrier or cloud path, training and a support plan so your team knows who to call after cutover.
After cutover, your team has a named support path for moves, menu changes and handset issues. BTI has Over 40 years in business and has delivered commercial security since the 2010s. The same accountable team handles design, installation and continuing support, so a Lake County IL location is not handed off to an unknown vendor after go-live. Your proposal also names who approves changes after the first 30 days and how those requests are logged. 4-hour onsite emergency response is available under BTI support agreements. Emergency support is available 24/7. Call 800-435-7284.
1441 Branding Ave, Suite 200
Downers Grove, IL 60515
Call 312-492-2613
Office hours: Monday to Friday, 8:00 AM to 5:00 PM CT. Emergency support is available 24/7. Call 800-435-7284.
Get directions. Read our Google reviews.
Our Downers Grove office is about 22 to 38 miles away from most Lake County IL communities. BTI has been in business for Over 40 years and has delivered commercial security since the 2010s. 4-hour onsite emergency response is available under BTI support agreements. Illinois security license 127.001638.
Get a Communications Systems QuoteGet a Contact Center Quote.
Yes. Work is run from our Downers Grove office and covers Waukegan, Vernon Hills, Libertyville, Mundelein and Gurnee. 4-hour onsite emergency response is available under BTI support agreements. Emergency support is available 24/7. Call 800-435-7284.
Possibly. BTI first checks the current platform, numbers, call flows and any existing obligations. Suitability is confirmed before promising a takeover. BTI evaluates Teams Phone, GoodPhone, supported cloud platforms, carrier services and existing-system options against actual requirements.
BTI has been in business for Over 40 years and has delivered commercial security since the 2010s.
4-hour onsite emergency response is available under BTI support agreements. Emergency support is available 24/7. Call 800-435-7284.
BTI evaluates Teams Phone, GoodPhone, supported cloud platforms, carrier services and existing-system options against actual requirements.
Often, yes. Number inventory and porting timing are confirmed before a cutover is scheduled. The proposal names which numbers move and when.
The design should name a backup calling path when the site internet is unavailable. Options are confirmed in the site survey and written into the proposal. They are not assumed to be included with every package.
Yes. A typical project includes admin and end-user training, plus a documented call-flow handoff so your team can change menus and voicemail without guessing.
The cutover window is scheduled around your operating hours after numbers, call flows and handsets are tested. A rollback or fallback path is discussed before the current carrier is released.
Emergency support is available 24/7. Call 800-435-7284. BTI operates a 24/7 NOC/SOC for covered support work under BTI support agreements.
BTI evaluates Teams Phone, GoodPhone, supported cloud platforms, carrier services and existing-system options against actual requirements. The selected platform, handsets and carrier path are itemized in the proposal.