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9
Monitor mode
Pressing the F4 = MON key activates the monitor mode, in which a data-safe,
high-impedance listening („monitoring“) of the line is possible.
In monitor mode, the second line of the display shows from left to right:
M For MONitor mude
T oder P Set dial, tone or pulse
- oder I Low Voltage Lockout o or on
- oder 0 One-position counter for charge pulse
Batterie Display of battery capacity
+005 Display of polarity (- or +) and three-digit display of line voltage,
max. 199 V
If connected correctly to the line, the A-wire is minus and the B-wire is plus.
Listening into the line can be done either by using the handset or the loudspe-
aker. This makes it easy to limit disturbances such as earth voltage, noise,
etc. or to determine that the line is occupied.
The open listening mode is activated with the SPKR On / O on the display
side. The volume can be adjusted in 6 steps with the Vol + and Vol - keys.
These keys are greatly delayed to prevent incorrect operation.
In monitor mode the DIGIT-GRABBER function is active. The DIGIT-GRAB-
BER function decodes the number dialed by the terminal (e.g. telephone,
fax, modem, alarm dialer) and displays it. The maximum length displayed is
48 characters.
CID RCL (Caller ID Recall)
The CID RCL key stores all transmitted information of the last three calls (e.g.
phone number, name, date and time), if oered by the network operator. In
talk mode, the stored information can be recalled by pressing the key repea-
tedly and selected with SEL.
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