Product manual

System description, Other system aspects
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
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Chapter 5 Other system aspects
5.1 Installation and maintenance
As each DCT1800-GAP system is configured to meet specific user requirements, the radio exchange
must be assembled on location. After the system has been physically installed it must be initialized.
Initialization, DCT1800-GAP system maintenance and updating, fault finding and repair are
accomplished with the aid of the cordless system manager for Windows program running on a personal
computer. CSM also gives basic statistics information like number of dropped calls, failed calls and
blocked calls. This information is useful for maintenance and fault finding.
Automatic system maintenance is a built-in feature that will detect, report, isolate and when possible
recover the system from errors.
All of the system boards in the radio exchange have a number of light emitting diodes that enable
maintenance personnel to quickly localize a faulty board. This feature is applicable during the power-
up phase and operational use of the system.
5.2 Capacity
5.2.1 Physical limitations of the system
Modular cabinets per DCT1800-GAP system: 4
System boards per modular cabinet: 9
Modular cabinet connection boards per modular cabinet: 1
5.2.2 Traffic limitations of the system
A system can handle a maximum of 60 simultaneous calls or 44.8 erlang with a Grade Of Service
(GOS) of 0.005. Each base station can handle a maximum of 8 simultaneous calls or 2.7 erlang with
a GOS of 0.005.
5.2.3 Characteristics
For information on DECT and system characteristics refer to section ’Product specifications’.
5.3 Numbering conventions
Figures 12 and 13 show how cabinets, boards, peripherals, CLCs, LTCs, DTCs and trunk channels
are numbered. The cabinet containing the CPU board is defined as cabinet 1.