Nortel Companion MICS-XC, Руководство по установке

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Registering individual portables / 77
P0881594 Issue 01 MICS-XC Norstar-Companion Installer Guide
Measuring RSSI for a C3050
The Receive Signal Strength Indicator (RSSI) is a
measurement of the signal strength the Base Station receives
from the portable. The Base Station controls the power
transmitting mode of the portable. When the Base Station
receives a weak signal, it instructs the portable to transmit in
high-power. When the Base Station receives a strong signal, it
instructs the portable to transmit in low-power. The strongest
RSSI value the portable displays is
-45
dBm (in the US) and
-44
dBm (in Canada). The weakest RSSI value the portable
displays is approximately
-94
to
-100
dBm.
To measure undirected RSSI
You can measure the signal strength between a portable and a
system-selected Base Station radio using undirected RSSI.
1. Open the portable flap.
2. Press
Ò or Ò.
3. Press
°•ª•. The portable displays the radio
ID of the Base Station that the portable is linked to,
followed by the signal strength and the power mode, for
example
03142 - 54 H
. Hand-off occurs normally
between the cell boundaries.
In this example, the module is
03
, the port is
14
, and the
radio is
2
. The signal strength measured by the Base
Station is
-54
dBm, and the
H
indicates that the portable is
transmitting in high-power mode (an
L
indicates low-
power mode).
4. To end the connection, press
´ or ´ or close the
flap.
Measuring directed RSSI
You may want to measure the RSSI between a portable and a
specific Base Station radio. For example, you may suspect that
p0881594.book Page 77 Tuesday, August 25, 1998 3:59 PM