Aria-130 Digital Key Telephone System
Issue: 1.2
Installation Manual
143
The ARIA-130 WOTS is used in single cell or multi-cell (maximum 16 cells).
5.4.1 Before Installation
Followings are the factors that affect the quality of service for the ARIA-130 WOTS.
•
Location of base station
•
Number of wireless terminal users within a base station range
•
Obstructions between base station and wireless terminal
•
Coverage area
•
Desired quality of service
The purpose of this section is to provide you with information and explain tasks that you should complete
to ensure the best operation of the system.
The following procedure is very helpful to check the coverage region and install the base station:
1.
Site survey (see the sub-clause A)
2.
Judge where to place bases on plan drawing (see the sub-clause B).
3.
For each base, check coverage tool (see the sub-clause D and CRS Tool Manual).
4.
Plot limit line for each base station.
5.
Check for shadow area.
6.
Adjust base position for shadow area or add base if not possible.
7.
Consider traffic 5 calls per cell add to plan.
8.
Install the base station (see the 5.4.2 Hardware Installation).
9.
Check with 33xH GAP handset using RSSI (possible in GDC-33xH only, displays only one base
station at a time, limit is -80dbm: see the sub-clause E)
10.
Walk with 2 handsets, monitor for voice quality and ‘OUT OF RANGE’ message.
11.
If it is OK, finish it.
A. Site Survey
1.
Get building blue prints.
2.
Check building material and thickness.
Consider the general construction materials used in walls, doors between multi-story buildings
and window coatings and coverings. Consider any large metal objects, such as equipments,
doors, and fluorescent lampshades too.
In general, signals are attenuated to some low degrees when they pass through any barrier,
however, some materials such as metal attenuate much degree.
Note
a)
Consider high traffic areas, such as conference rooms, cafeterias, and manufacturing floors.
b)
Consider office locations and number of wireless terminal users within the site.
B. Base Station Broadcast Range and Location
1.
Base Station Requirements
To determine the number of base station in a system, you should consider base station broadcast
range.
