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CS and PS
Each CS
Each PS
PBX and CS
If multiple CSs cover the same area, the phone connection may become noisy or the number of possible
simultaneous calls with PSs may decrease due to interference between the CSs. For details, refer to "5 Site
Survey—Testing the Radio Signal Strength".
The required distance between CSs may vary depending on the environment of the installation site and
conditions in which the wireless system is used. Conduct a site survey to determine the appropriate distance.
RF Specification
Item
Radio Access Method
Frequency Band
Number of Carriers
Carrier Spacing
Bit Rate
Carrier Multiplex
Frame Length
Modulation Scheme
Data Coding for Modulator
Voice CODEC
CAUTION
•
The CS should be kept free of dust, moisture, high temperature (more than 40 °C [104 °F]), low
temperature (less than 0 °C [32 °F]), and vibration, and should not be exposed to direct sunlight.
•
The CS should not be placed outdoors (use indoors).
•
The CS should not be placed near high-voltage equipment.
•
The CS should not be placed on a metal object.
Document Version 2009-12
Equipment
MultiCarrier TDMA-TDD
1920 MHz to 1930 MHz
5
1728 kHz
1152 kbps
TDMA, 24 (Tx12, Rx12) slots per frame
10 ms
GFSK
Roll-off factor=0.5 50 % roll-off in the transmitter
Differential Coding
32 kbps ADPCM (CCITT G.726)
Distance
More than 1 m (3 ft 3 in)
More than 3 m (10 ft)
More than 0.5 m (1 ft 8 in)
More than 2 m (6 ft 7 in)
Description
Quick Installation Guide
1 Overview
9
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