What does DECT mean on WiFi?

DECT, which stands for Digital Enhanced Cordless Telecommunications, is a wireless communication standard primarily used for voice communication, especially in the realm of cordless phones. It is distinct from WiFi (Wireless Fidelity), which is a broader set of standards for wireless local area networking. DECT and WiFi serve different purposes, and they operate on separate frequency bands.

Key Characteristics of DECT on Cordless Phones:

  1. Digital Telephony:
    • Voice Communication: DECT is designed for voice communication, offering digital telephony with high-quality audio. It is commonly used in cordless phones for residential and business applications.
    • Interference-Free: DECT operates in the 1.9 GHz frequency band, providing a dedicated spectrum for voice communication. This helps reduce interference and ensures clear voice quality.
  2. Range and Mobility:
    • Extended Range: DECT cordless phones typically have an extended indoor range, allowing users to move around within a specified coverage area without losing connection quality.
    • Handover Capability: DECT supports seamless handover between base stations, allowing users to maintain a conversation while moving from one coverage area to another.
  3. Security:
    • Encryption: DECT incorporates encryption protocols to secure voice communication. This ensures that conversations remain private and protected from unauthorized access.
  4. Low Power Consumption:
    • Efficient Battery Usage: DECT devices, such as cordless phones, are designed for low power consumption, contributing to longer battery life.

DECT and WiFi Coexistence:

  1. DECT on WiFi Phones:
    • WiFi Phones with DECT Support: Some WiFi phones or VoIP (Voice over Internet Protocol) phones may incorporate DECT technology for voice communication. This can enhance the quality and reliability of voice calls, especially in environments where WiFi signals may be subject to interference.
  2. Separate Frequency Bands:
    • Avoiding Interference: DECT and WiFi operate on different frequency bands, with DECT in the 1.9 GHz range and WiFi commonly using 2.4 GHz or 5 GHz bands. This separation helps prevent interference between the two technologies.
  3. Use Cases in Home and Business:
    • Residential Use: In residential settings, DECT is often used for cordless phones, while WiFi is employed for data connectivity.
    • Business Environments: DECT-based cordless phone systems are frequently used in business environments, providing mobile communication within office spaces.


DECT and WiFi serve distinct purposes, with DECT being tailored for voice communication in cordless phones and WiFi being a versatile standard for wireless data communication. While they can coexist, they typically operate independently to avoid interference. The integration of DECT in WiFi phones allows users to benefit from the strengths of both technologies, ensuring reliable voice communication alongside data connectivity. Understanding the specific applications and characteristics of DECT and WiFi helps users make informed decisions based on their communication needs.

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