Yealink W-Series, Snom M-Series, Gigaset N-Series, and Spectralink, common in healthcare and manufacturing.

What Is DECT?

Q: Is DECT better than WiFi VoIP

For stable voice, yes. DECT uses dedicated spectrum, covers more area, and hands over more smoothly between cells.

Q: How many handsets does DECT IP support

Multi-cell DECT systems support 200 to 1,000+ handsets depending on brand, viable for hospitals and warehouses.

2026-05-07 2 min readSIPPER Team

DECT is a wireless phone standard on dedicated 1.9 GHz spectrum in Thailand. It covers wider area more reliably than WiFi VoIP. Common in factories, warehouses, hospitals, and hotels.

Definition

DECT (Digital Enhanced Cordless Telecommunications), an ETSI standard, uses dedicated phone spectrum. In Thailand it operates at 1.88-1.9 GHz, with HD voice via DECT 6.0 / CAT-iq.

Usage

Used where stable voice is needed across wide areas: factories, warehouses, hospitals, hotels. DECT IP base stations plus handsets connect to IP PBX via SIP.

Related Concepts

Multi-cell DECT supports handover between base stations like WiFi roaming. Unlike WiFi VoIP, DECT uses dedicated spectrum unaffected by data traffic.

Frequently Asked Questions

Is DECT better than WiFi VoIP

How many handsets does DECT IP support

Popular DECT brands

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