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t
TALK MODE
t
Press
TALK
to go off-hook.
A double beep is heard and the mode LED flashes
m
Press
MONITOR
to go back on-hook. The mode LED then flashes
PLEASE NOTE
: if Tele300B is connected to an overvoltage or a digital signal,
then Tele300B does not loop the line and sounds an alarm.
AUTOMATIC PROTECTION OF DIGITAL LINES:
Connect Tele300B to the line.
t
Press and release
TALK
to go off-hook. Thanks to
different cases:
1\ a digital signal is present:
a two tone alarm
does not loop the line. To override this alarm, hold down the
2\ a high DC level is present (>116V±4V):
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
RED and GREEN
does not loop the line. To override this alarm, press
4\ no alarm (i.e. no digital signal nor high DC present): Tele300B goes off-hook
and loops the line.
Digital signal detection OVERRIDE
When connected to normal DC, it is possible to override the digital detection
t
lock-out by pressing and holding
TALK
override tones have stopped. This can be particularly useful on a faulty line
being highly imbalanced.
m
MONITOR MODE
(high impedance).
m
Press
MONITOR
. The mode LED flashes
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.
M
MUTE
M
Press and release
MUTE
to cut off transmission during a call. Press again to
talk.
P
POL: POLARITY TEST
P
Press
POL
and observe the polarity LED.
RED
LED: red lead is connected to A (+Ve).
GREEN
LED: red lead is connected to B(-Ve).
During this test, Tele
300B
remains high impedance and will not interfere with
data or speech calls..
s
SPKR: SPEAKER MODE
s
Press
SPKR
to activate the speaker function. If
while Tele300B is off, then Loud-speaker Monitor is automatically activated.
Volume adjustment:
v
Press and release
VOL
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.
Red lead polarity:
Green = B(-Ve).
Red
= A (+Ve).
RED
.
GREEN
.
DigAlert
TM
DigAlert
TM
, there are four
is heard, Tele300B locks out and
t
TALK
key.
a single tone alarm
is heard,
a single tone alarm
, Tele300B locks out and
t
TALK
again.
for more than 6 seconds and until the
m
GREEN
. Press again
MONITOR
s
SPKR
is pressed
Warning!
hold loudspeaker more than 30cm (1 foot)
from your ear.
Misuse can result in hearing damage.
Replace
Battery
Red: Talk Mode.
Green: Monitor mode.
PULSE
FLASH
SPKR
VOL
?
LNR/PAUSE
MEM
STO
POL
1
2
3
4
5
6
7
8
9
0
#
TONE
MONITOR
MUTE
TALK
When in Loudspeaker mode,
l
LNR/PAUSE: Last Number Redial and Pause
l
Press
LNR/PAUSE
immediately after off-hook to redial the previous
number dialled.
In STORE mode (see below) press
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.
l
LNR/PAUSE
to resume.
f
FLASH
A timed line break is generated when this
S
r
STO
MEM Storing a number in memory
:
There are ten memory locations, one under each of the dialling digits.
t
While connected to a line and in TALK
mode:
S
Press
STO
to enter STORE mode, Press
Enter the telephone number to be stored then press
The number is stored under the button chosen. ln memory you may also store
*
f
l
,#,
Flash or
Pause. These will be redialled as they were entered.
Dialling a number from a memory location.
t
While connected to a line and in TALK
mode:
r
Press
MEM
. Press the location digit 0-9.
The stored number under that button will be redialled.
p
PULSE Dialing
With the DigAlert™ connected to a live line, press
t
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.
Mixed Pulse and Tone dialling
Select Pulse mode as above and dial the Pulse digits. Press
the Tone digits (the star will not be dialled out). This will be stored in the Last
l
Number Redial memory (
) as dialled. Redialling will be mixed mode if in
l
Pulse mode when redial
is attempted. If tone mode is selected all digits
will be dialled in Tone including the star.
LOW BATTERY
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
replace the battery as soon as possible
INSTALLING or REPLACING THE BATTERY
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.
It is very important to ensure that Tele300B is off when replacing a battery
(No LED lit).
m
Disconnect from the line and press
Monitor button to extinguish the Green
(Mode) LED.
If you do not do this, when the new battery is fitted, the test-
telephone may not restart correctly.
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.
l
LNR/PAUSE
to
Press
f
FLASH
button is pressed.
r
MEM
and a location (0-9).
S
STO
to store.
p
PULSE
before
*
(Tone) then dial
you are advised to
.
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