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TALK MODE
MONITOR MODE
MUTE
Press
to go off-hook.
A double beep is heard and the mode LED flashes
.
Press
to go back on-hook. The mode LED then flashes
.
: if Tele300B is connected to an overvoltage or a digital signal,
then Tele300B does not loop the line and sounds an alarm.
Connect Tele300B to the line.
Press and release
to go off-hook. Thanks to
, there are four
different cases:
1\ a digital signal is present:
is heard, Tele300B locks out and
does not loop the line. To override this alarm, hold down the
key.
2\ a high DC level is present (>116V±4V):
is heard,
Tele300B locks out and does not loop the line. This alarm may not be
overridden.
3\ a dc level between 76V(±4V) and 116V(±4V) is present:
is heard, the mode LED flashes
, Tele300B locks out and
does not loop the line. To override this alarm, press
again.
4\ no alarm (i.e. no digital signal nor high DC present): Tele300B goes off-hook
and loops the line.
When connected to normal DC, it is possible to override the digital detection
lock-out by pressing and holding
for more than 6 seconds and until the
override tones have stopped. This can be particularly useful on a faulty line
being highly imbalanced.
Press
. The mode LED flashes
. Press again
to switch off Tele300B.
In order to extend its battery life, Monitor is automatically switched off after 20
minutes, if connected to a powered line, and 5 minutes after disconnection. An
audible signal is heard on timing out.
Press and release
to cut off transmission during a call. Press again to
talk.
300B
Press
to activate the speaker function. If
is pressed
while Tele300B is off, then Loud-speaker Monitor is automatically activated.
Press and release
to select the high setting, press again to return to
the normal setting.
In TALK mode, receive only is possible while in speaker mode.
After disconnection from the line for more than 5 minutes, Tele300B
automatically switches off and the time-out tone is heard.
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TALK
RED
MONITOR
GREEN
TALK
a two tone alarm
TALK
a single tone alarm
a single tone alarm
RED and GREEN
TALK
Digital signal detection OVERRIDE
TALK
MONITOR
GREEN
MONITOR
MUTE
SPKR
SPKR
VOL
Press
and observe the polarity LED.
LED: red lead is connected to A (+Ve).
LED: red lead is connected to B(-Ve).
During this test, Tele
remains high impedance and will not interfere with
data or speech calls..
PLEASE NOTE
Volume adjustment:
AUTOMATIC PROTECTION OF DIGITAL LINES:
POL: POLARITY TEST
SPKR: SPEAKER MODE
(high impedance).
POL
RED
GREEN
P
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DigAlert
TM
DigAlert
TM
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LNR/PAUSE: Last Number Redial and Pause
FLASH
STO
MEM Storing a number in memory
Dialling a number from a memory location.
PULSE Dialing
Mixed Pulse and Tone dialling
LOW BATTERY
INSTALLING or REPLACING THE BATTERY
LNR/PAUSE
LNR/PAUSE
LNR/PAUSE
FLASH
STO
MEM
STO
MEM
PULSE
you are advised to
replace the battery as soon as possible
Press
immediately after off-hook to redial the previous
number dialled.
In STORE mode (see below) press
to
insert a Pause in a memory. If within the first 5 entries, this inserts a 2 second
pause in the dialling out string, if not, then it halts the dialling.
Press
to resume.
A timed line break is generated when this
button is pressed.
:
There are ten memory locations, one under each of the dialling digits.
While connected to a line and in TALK
mode:
Press
to enter STORE mode, Press
and a location (0-9).
Enter the telephone number to be stored then press
to store.
The number is stored under the button chosen. ln memory you may also store
,#,
Flash or
Pause. These will be redialled as they were entered.
While connected to a line and in TALK
mode:
Press
. Press the location digit 0-9.
The stored number under that button will be redialled.
With the DigAlert™ connected to a live line, press
before
selecting
Talk mode. This is confirmed by a single high beep. Dialling mode
will automatically revert to Tone when the line is disconnected or if the
Tele300B is switched off.
Select Pulse mode as above and dial the Pulse digits. Press
(Tone) then dial
the Tone digits (the star will not be dialled out). This will be stored in the Last
Number Redial memory (
) as dialled. Redialling will be mixed mode if in
Pulse mode when redial
is attempted. If tone mode is selected all digits
will be dialled in Tone including the star.
A red LED at the centre of the keypad starts to flash RED when the battery
needs replacing. Also, at each mode change of the Tele300B, a low battery
tone will be heard. Once the low battery LED is on, Tele300B will keep on
working to its specification for a couple of hours, but
.
Remove the three hatch cover screws as shown below. Unclip the battery and
replace it with a 9V alkaline battery. Make the change within one minute if you
want to retain your memory contents.
Disconnect from the line and press
Monitor button to extinguish the Green
(Mode) LED.
To cure it, disconnect the battery for at
least 2 minutes and short the terminals together for a few seconds (when
battery not fitted). Replace the hatch cover ensuring that the line cord is
correctly routed. Tighten the screws firmly but do not use excessive force.
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It is very important to ensure that Tele300B is off when replacing a battery
(No LED lit).
If you do not do this, when the new battery is fitted, the test-
telephone may not restart correctly.
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1
2
3
4
5
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7
8
9
0
#
Red: Talk Mode.
Green: Monitor mode.
Red lead polarity:
Green = B(-Ve).
= A (+Ve).
Red
Replace
Battery
PULSE
FLASH
VOL
MEM
LNR/PAUSE
STO
POL
SPKR
TONE
TALK
MONITOR
MUTE
Warning!
When in Loudspeaker mode,
hold loudspeaker more than 30cm (1 foot)
from your ear.
Misuse can result in hearing damage.
