Product manual

System description, System description
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
3
Chapter 2 System description
DECT is a general radio access technology for short range low power radio (cordless)
telecommunications. It is a high capacity, pico-cellular digital radio technology with cell radio ranging
up to about 5 km depending on the configuration and application areas. It provides wired telephony
quality voice services and a broad range of data services, including ISDN. DECT products can be
effectively implemented as a simple residential cordless telephone (single cell) or as a system providing
all telephone services in a city centre (public mobility).
The DCT1800-GAP system is targeted as stand-alone business cordless application, to be used
together with a PBX. Except for cordless mobility, DECT does not offer a specific service; it is
transparent to the services provided by the connected network.
2.1 DCT1800-GAP system
The DCT1800-GAP system is the GAP (Generic Access Profile) compliant platform for BCT (Business
Cordless Telephone) applications.
The GAP standard provides interoperability of DECT cordless phones among DECT-GAP systems of
different manufacturers.
The DCT1800-GAP system is targeted as stand-alone business cordless applications. It does not
support mobility between systems.
The DCT1800-GAP protocol system is based on the DCT1800-A protocol system. Existing DCT1800-
A systems can be upgraded with a minimum of effort and investments, because the upgrade is mainly
done through a software and firmware upgrade. The required hardware that is needed for an upgrade
depends on the configuration of the system. For information about upgrading refer to section ’Upgrade
information’.
2.2 System description
The DCT1800-GAP system can be connected to virtually any PBX or centrex lines. These lines can
be either standard analogue (2-wire) lines (one per user), primary rate (2.048 Mbit/s) digital subscriber
lines with Channel Associated Signalling (CAS) firmware (one trunk per 30 users), or primary rate
(2.048 Mbit/s) digital subscriber lines with Common Channel Signalling (CCS) firmware (one trunk
per 30 simultaneous calls).
A network of low-power radio base stations provides coverage throughout an organization’s premises:
within this area, users can make and receive calls with complete freedom, indoors and outdoors on
the site. By means of handovers from base station to base station, the user can roam within the
covered area while maintaining the call without degradation of quality. Built-in voice encryption ensures
privacy and secure communications.
All functions and features of the host PBX are available to users, via the pocket-sized cordless phones.
Calls can be transferred, speed-dial numbers can be accessed and voice mailboxes used.
The DCT1800-GAP system can be configured to meet user requirements with respect to the area to
be covered and the number of cordless phones to be used. This system has been designed to operate
in indoor environments and can support both low as well as high traffic density situations.