DECT stands for "Digital
Enhanced Cordless Telecommunications" and denotes a
radio technology suited for voice data and networking
applications with range requirements up to a few 100
m.
DECT is a flexible
digital radio access standard for cordless communications
in residential, corporate and public environments. DECT
provides for voice and multimedia traffic, and contains
many forward-looking technical features that allow DECT-based
cordless systems to play a central role in important
new communications developments such as Internet access
and interworking with other fixed and wireless services
such as ISDN and GSM.
The DECT standard
makes use of several advanced digital radio techniques
to achieve efficient use of the radio spectrum; it delivers
high speech quality and security with low risk of radio
interference and low power technology.
TDMA (Time Division
Multiple Access) radio access, with its low radio interference
characteristics, provides high system capacity to handle
up to 100'000 users per km² floor space in an office
environment.
ADPCM (Adaptive Differential
Pulse Code Modulation) speech encoding ensures a DECT
cordless phone very high speech quality, comparable
to wireline telephony.
DCS/DCA (Dynamic Channel
Selection / Allocation) is a unique DECT capability
that guarantees the best radio channels available to
be used. This happens when a cordless phone is in stand-by
mode, and throughout a call. This capability ensures
that DECT can coexist with other DECT applications and
with other systems in the same frequency, with high-quality,
robust and secure communications for end-users.
Other features of
the DECT standard include encryption for maximum call
security and optimized radio transmission for maximum
battery life.
DECT basic technology
and the various profiles enhance the DECT standard,
introducing evolutionary applications and services.
The GAP profile, for example, ensures interoperability
of equipment from different providers for voice applications.
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