Nortel Networks DCT1900 - Manual (Page 51)

Technical Product Manual - DCT1900
System Description, Other System Aspects
System-DCT1900/R8/mw 5-1
© 2000-2005
C HAPTER 5
Other System Aspects
5.1 Installation and Maintenance
As each DCT1900 system is configured to meet specific user requirements, the RE must be
assembled on location. The system must be initialized after the physical installation. DCT1900
system initialization, maintenance and updating, and fault finding and repair are accomplished with
the aid of the CSMW Software program running on a personal computer.
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 RE 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 Statistics
The CSMW software is capable of collecting statistical information. During operational use of the
DCT1900 system, useful information can be registered. This information can consist of the total
call time of all Portable Telephones per hour during a day or a period of days, highest number of
simultaneous calls, call duration per user, distribution of calls according to the call length, load of
Base Stations, status information of a call, handovers, etc. All this information is useful to analyze
the performance of the DCT1900 system.
5.3 Capacity
5.3.1 Physical Limitations of the System Housed in the Modular Cabinet
Modular Cabinets per DCT1900 system : 4
System boards per Modular Cabinet : 9
Modular Cabinet Connection boards per Modular Cabinet : 1
Synchronization Distribution Board per system : 1
5.3.2 Traffic Limitations of the System
A system can handle a maximum of 60 simultaneous calls or 44.8 Erlang with a GOS of 0.5%.
Each Base Station can handle a maximum of 8 simultaneous calls or 2.7 Erlang with a GOS of
0.5%.