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Do I Need a Phone Line for Alarm Monitoring?

No — modern alarm systems use LTE cellular, not phone lines. Learn why cellular monitoring is more reliable and how to upgrade your existing system.

No — you do not need a phone line for alarm monitoring. Most modern alarm systems communicate via LTE cellular, which is faster, more reliable, and cannot be defeated by cutting a phone line.

Why Phone Line Monitoring Is Outdated

Cellular Monitoring — The Modern Standard

LTE cellular monitoring works like a cell phone built into your alarm system, completely independent of your home phone or internet.

How to Upgrade From Phone Line to Cellular

The Monitoring Center installs an LTE alarm communicator directly onto your existing panel — no new sensors or panel replacement required in most cases.

Do I Need Internet for Monitoring?

No. Cellular monitoring is completely independent of your home internet. Your alarm signals our center even during an internet outage.

Upgrade to Cellular Monitoring

No phone line required. Cellular plans start at $21.99/month.

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Frequently Asked Questions

Will my alarm still work if I cancel my landline?

Yes, if you upgrade to cellular communication. Without a phone line or cellular communicator, your alarm sounds locally but cannot signal a monitoring center.

What is VoIP and why is it bad for alarm systems?

VoIP converts voice to digital data over the internet. Most alarm systems cannot reliably transmit signals over VoIP, leading to failed signals or false alarms.

How much does a cellular alarm communicator cost?

TMC installs the BAT-Connect LTE communicator on compatible panels. Cost varies by system — call us for a specific quote.

Can I use WiFi instead of cellular?

WiFi can be used as a supplementary path but not as a sole method. WiFi depends on your router, which can fail during a power outage or be disrupted by an intruder.

What happens to my alarm if the cellular network goes down?

Major LTE outages are extremely rare. TMC uses dual-carrier cellular on select plans, routing through two networks for maximum reliability. The cellular path is supervised and provides prompt instant alerts, as well as notification from our 24/7 central station.

Call Now: 1-866-247-4999