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
.
FRONT PANEL
INSERT
RETURN
SEND
MONO
LINE ADJUST
VU SELECT
ON
-15
-9
-4
0dBu
RETURN
SEND
INPUT
LEVEL
CALIBRATION
TEST
R
Z
CALL
CONTROL
LEVEL
+
-
LEVEL
+
-
PUSH TO
INSERT
ON
+
Analog Hybrid
1
2
3
12
4
5
6
8
9
10
11
14
13
7
15
Rami
TEL150
13
Summary of Contents for TEL150
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