AT&T Landline Phase-Out in Illinois: What It Means for Your Home Security Alarms

Illinois homeowners – AT&T is discontinuing traditional copper landlines on or after March 15, 2027. New landline orders already stopped in October 2025. If your home security alarm, medical monitoring device, or fax machine depends on that old phone line, it could lose the ability to call for help in an emergency.

The reliable solution?

Switch to Sentry Security’s wireless cellular systems no landline required, full protection that works when you need it most.

Why Make the Switch Now?

• Cellular technology stays connected during power outages (with battery backup).
• No wires to cut — much harder for intruders to disable.
• 24/7 professional monitoring with instant 911 dispatch.
• Smartphone app control: arm/disarm, get real-time alerts, view cameras.

Protect your home before the change hits – Call 847.353.7200 today!Email: service@sentrysecurity.com | www.sentrysecurity.com

Why Choose Sentry Security?

• Largest locally-owned security company in Greater Chicagoland.
• Over 35 years protecting Illinois homes and businesses.
• 7,000+ systems under 24/7 monitoring with excellent customer retention.
• Real customer feedback: “Excellent monitoring for 15+ years – always reliable.”.

Learn more:

Customer Reviews • About Us • Wireless Security Systems • 24/7 Monitoring • Senior Care Solutions

What Happens Next? Simple Steps

1. Call us for a free, no-pressure assessment.
2. We design and install your new wireless system.
3. Enjoy complete install, 24/7 monitoring, maintenance, and inspections.