We’re Your Neighbors —
Business Phone Systems for St. Louis
Phonewire is headquartered in O’Fallon — twenty minutes from the Arch on a day when 64 isn’t backed up past Kingshighway. When something breaks, we get in the truck. We’ve been doing this in the St. Louis metro since 1998.
AT&T Copper Retirement — 57 Missouri Wire Centers, June 2026 Deadline
AT&T grandfathered 57 Missouri wire centers on October 15, 2025. No new POTS orders, adds, moves, or changes accepted. Full decommissioning begins June 2026 with only 90 days notice per location. We handle the full transition — number porting, SIP trunk provisioning, same-day installation — with no gap in your 314 or 636 service.
St. Louis Businesses Know Us — and We Know St. Louis
We’ve been installing phone systems for St. Louis businesses since the Blues were still breaking hearts every spring and Nelly’s 314 was the most famous area code in hip-hop. We know the difference between what a Clayton law firm needs and what a Maryland Heights manufacturer needs. We know that the Chesterfield Valley office parks have different wiring realities than the beautiful old buildings on Olive Street in the Central Corridor. And we know that when your system goes down during business hours, “submit a ticket” is not an answer.
We serve businesses across the whole metro — from South City to St. Charles, from Kirkwood and Webster Groves to Hazelwood and Bridgeton, from the hospital corridor near BJC HealthCare and SSM Health out to the Westport and Chesterfield business parks. We’ve installed in buildings on Lindbergh, on Gravois, and in buildings that are technically in the City of St. Louis but feel like they’re in a different century of construction.
The St. Louis market has a dense concentration of legacy systems: Nortel Norstar setups from before the Rams left, Panasonic KX-NS in medical office buildings near Washington University, and Avaya IP Office installations from the period when Avaya was still a company you could count on. Those systems ran reliably for years — and that’s exactly why nobody replaced them until the manufacturer went bankrupt, stopped making parts, or quietly walked away from the market.
New 314 or 636 Number — or Text-Enable Your Existing One
We provision new local St. Louis business numbers in 314 (city and inner suburbs), 636 (O’Fallon, Chesterfield, St. Peters, St. Charles), and the 557 overlay — or we port your existing number at no service gap. We also text-enable your current business line so your clients can text your 314 or 636 number and messages land in a shared desktop inbox your whole team can see. They text the same number they’ve always called. You reply from your desk or the Linkus app on your phone. Your personal cell stays out of it completely. See how business texting works →
⚠️ Legacy Systems We Replace Every Week in the St. Louis Metro
- Nortel Norstar / Meridian — Unsupported since Nortel’s 2009 bankruptcy. Parts drying up fast from secondary markets.
- Panasonic KX-NS / KX-TDE — Panasonic closed its business phone division in 2023. All dealer support ended March 2025.
- Avaya IP Office — Two Chapter 11 bankruptcies (2017 and 2023). Local dealer network significantly contracted.
- Toshiba Strata — Toshiba exited the U.S. phone system market completely in October 2021. Zero manufacturer support.
If your system’s manufacturer is no longer in business, every day is a day closer to a Monday morning emergency. We migrate these platforms regularly — your old system stays live until cutover day, and your 314 or 636 numbers port quietly in the background.
“We’re a 14-person law firm in Clayton. We’ve been on a national VoIP provider for three years. Every time we need to add an extension or change a routing rule, we open a ticket and wait two days. I can get to Ted Drewes and back faster than I get a callback from their support team. We need someone local who picks up.”
Phones That Work When the Internet Doesn’t — Even on the Illinois Side
St. Louis businesses — whether you’re in Laclede’s Landing or in the Metro East across the river — know internet isn’t always reliable. Storm on the Mississippi, a dig crew cutting fiber on your block, your ISP having a bad morning. With cloud-only VoIP, when internet goes down, your phones go down. Our Hybrid system has a built-in 4G LTE cellular failover module. The moment it detects internet failure, calls route through cellular automatically — within seconds. Your 314 or 636 number stays live, the auto-attendant keeps answering, and nobody on your team has to do anything.
St. Louis Businesses That Call Phonewire
Law Firms & Legal Services
Clayton is packed with law firms. So are Ladue, downtown, and Creve Coeur. Direct dial per attorney, call recording, professional auto-attendant, and support that picks up — not a portal where you wait two days for a reply.
Healthcare & Medical Practices
BJC, SSM Health, Mercy — and the independent practices that orbit them. Routing that reaches a live person, voicemail-to-email within seconds, HIPAA-aware configuration, and on-call mobile extensions for providers who need to be reachable without giving patients a personal cell number.
Manufacturing & Industrial
Earth City. Maryland Heights. North County. Fenton. We connect front offices to production floors, integrate overhead paging, and handle multi-building setups in facilities that look nothing like a downtown office park.
Financial Services & Professional
Edward Jones, Centene, Stifel — and the hundreds of advisory, accounting, and consulting firms that work alongside them. Call recording for compliance, CRM integration, and mobile extensions for advisors who work in-person with clients off Lindbergh or Olive.
Ready to Talk? We’re Right Down 64 From You.
Same-day quote. On-site installation. Free demo — we’ll come to you or you come see us in O’Fallon. No ticket queue. No offshore support. Just us and your phone system.