Installation
Line Terminal Connections and Selections
The number of telephones which can be connected to a direct exchange line or
PBX
is limited by the ringer eql]ivalence nu111per
(REN)
of.all the telephOnes
which should not exceed a total value df4:
The
REN
value of this telephone is I. In case of doubt consult your telephone supplier.
The Terminal block mounted at the back of the unit is labelled as follows:-
1.
2.
bell
3.
Not used
4.
Line (A)/extension bell
}
pltig
431A
}
External induction loop for Hearing Aid
(3 turns, Im dia)
7.
8.
0
volt
}
9
I
external 9 volt de
supply
+
vo t
Ina/ Mode Selections
Mode selectable
DIP
switches
as
follows:
SWI 8 -I I min. timeout:
SWI 8 -2 I min. timeout:
SW18- 3
when master socket is used)
Loop Dial or DTMF Dial
-9-
enable- OFF
disable -I
(ON)
(factory setting)
fixed - OFF (factory setting)
automatic-2
(ON)
enabled - 3
(ON)
disabled - OFF (factory setting)
Loop Dial - A (factory setting)
DTMF-1
