Notice serie 4 01-05 22/12/05 16:32 Page 12
OFF
This position connects the internal electronic rin-
ger to the line in order to receive incoming ring si-
gnals. The OFF position creates an on hook
condition, with the speech and test circuits isolated
from the line.
-MON (Monitor)
This position connects the Series 4 to the line
through a high impedance circuit allowing moni-
toring of the line without disturbing conversa-
tions, data transmission, or network signaling.
2. PULSE/TONE SWITCH
Located
on the right side
above
the
keypad, this
2
positions switch
is
used
to
select
the
dialing
mode.
- PULSE : The pulse position selects rotary style
dial pulse signaling.
- TONE : The tone position selects DTMF
signaling.
3. KEYPAD
There are 12 standard network addressing keys,
and 4 control keys to enable special functions.
The 12 standard keys are used in entering di-
gits for network addressing and signaling.
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