FRONT PANEL
1 - Incoming call signal.
2 - "TELEPHONE / INSERT" switch.
3 - Hook signal.
4 - Correspondent return level.
5 - Correspondent return cut (STAND-BY).
6 - "STAND-BY" indicator.
7 - Adjustment of the antilocal tuning of the line (R).
8 - Adjustment of the antilocal tuning of the line (Z).
9 - Internal test signal activation (line calibration).
10 - Signal level to correspondent from MONO input.
11 - Audio level to correspondent.
12 - Switch to select signal to Vumeter Send or Return.
13 - Signal for "MODE SEND" display on Vumeter (signal to correspondent).
14 - Signal for "MODE RETURN" display on Vumeter (signal from correspondent).
15 - Vumeter used to display either SEND or RETURN signal, according to switch 12.
Rami
INSERT
RETURN
PUSH TO
INSERT
CALL
R
-
+
LEVEL
ON
CALIBRATION
5
1
2
3
4
6
7
LINE ADJUST
MONO
SEND
+
Z
INPUT
-
+
LEVEL
LEVEL
VU SELECT
TEST
8
9
10
11
12
13
Analog Hybrid
CONTROL
SEND
RETURN
ON
-15
-9
-4 0dBu
13
15
14
TEL150