P
AGE
4
00331-0398 <90-00044>
F
IG
. 1 - 00331 DTSS3ON F
UNCTIONAL
B
LOCK
D
IAGRAM
CIRCUIT DESCRIPTION
S2
J4
PHONE JACK
PABX LINE
-4dB
-6dB
1 (RING)
2 (TIP)
P1
RING 41
TIP 47
A
LEAD
43
B
LEAD
45
GND
17
55
49
5
(TO 44443)
4W
XMT
J1
4W
RCV
15
-16dB
+7DB
TRUNK
XMT
RCV
NC
COM
NO
M LEAD
CALLED
PARTY
DELAY
J5
17
16
7
8
91
0
1
1
E LEAD
S1
5
1
8
9
10
11
22
6
2
1
3
3
51
53
7
13
46
48
39
54
52
14
24
38
40
32
36
50
44
RING TIP
BUSY TONE
ALERT TONE
ON HOOK TONE
OFF HOOK TONE
STATION IN
MANUAL CLEAR
DROP
XMT
DROP
RCV
BUSY
42
41
47
2
4
17
18
35
SUMMING OUT
LINE
XMT
LINE
RCV
HIGH IMP.
15
14
XMT
13
3
4
6
17
55
49
7
35
39
12
4
3
GND
DTMF
IN
BUSY OUT
-BATT.
(TO 44020 & 49018)
J3
ADDR 1 STA
ADDR 2 ALL CALL
POWER-UP CLEAR
(-) 12
-BATT
(+) 6
GND
-16dB
+7dB
J6
BUSY TONE
CONTROL TONE
GENERATOR
-BATT.
#
OR
*
TONE
(S3 SELECTS)
P1
P1
RCV
+
35V
-30V
UPDATED
