Digital Enhanced Cordless Telecommunications
DECT
Digital European Cordless Telecommunications

    (DECT, formerly ".. European ..") A
   standard developed by the European Telecommunication
   Standard Institute from 1988, governing pan-European digital
   mobile telephony.  DECT covers wireless PBXs, telepoint,
   residential cordless telephones, wireless access to the
   public switched telephone network, Closed User Groups
   (CUGs), Local Area Networks, and wireless local loop.

   DECT defines only the radio connection between two points and
   can be used for remote access to public and private networks.
   Other mobility standards, such as GSM, TACS, and DCS
   1800 add the necessary switching, signaling, and management
   functions that are not specified by DECT.

   The DECT Common Interface radio standard is a multicarrier
   time division multiple access, time division duplex
   (MC-TDMA-TDD) radio transmission technique using ten radio
   frequency channels from 1880 to 1930 MHz, each divided into
   24 time slots of 10ms, and twelve full-duplex accesses per
   carrier, for a total of 120 possible combinations.

   A DECT base station (an RFP, Radio Fixed Part) can transmit
   all 12 possible accesses (time slots) simultaneously by using
   different frequencies or using only one frequency.  All
   signaling information is transmitted from the RFP within a
   multiframe (16 frames).  Voice signals are digitally encoded
   into a 32 kbit/s signal using Adaptive Differential Pulse
   Code Modulation.

   The handover process is requested autonomously by the
   portable terminal and the Radio Fixed Parts, according to the
   carrier signal levels.  A "Generic Access Profile" defines a
   minimum set of requirements for the support of speech
   telephony.

   <http://italtel.it/catalog/data/inglese/capc_5.htm>.

   (1999-04-13)