P
AGE
8
49018-0697 <90-00089>
F
IG
. 3 - 49018 S
UBASSEMBLY
A
PPLICATION
D
IAGRAM
APPLICATION INFORMATION
41
44022
STATION
INTERFACE
4
600
Ω
600
Ω
XMT
RCV
12
11
10
9
8
7
5
6
4
3
2
1
P2 / J2
35
17
-24 OR -48 VDC
GND
10
11
12
P1 / J1
49020
TONE SUPPLY
SUBASSEMBLY
VDC VDC GND
REGULATOR
48020
RING
GENERATOR
7
13
51
53
38
40
36
34
32
30
4W RCV
4W XMT OR 2W XMT/RCV
2 WIRE
OFF HOOK
#
ON HOOK
*
BUSY TONE
RING BACK TONE
ALERT TONE
RING INTERRUPT
RING
GEN
SUPPLY
31
RING GEN
SUPPLY
23
43
21
19
RING GEN ENABLE
12
11
10
9
8
7
5
6
4
3
2
1
16
15
13
22
16
55
3
22
39
26
24
35
23
21
25
31
RING
START
PWR UP CLR
STATION OUTPUT
GP CALL
DIGIT 0
DIGIT 1
BUSY
RESET
CLR
PWR-UP
BUSY
49
P2
P1
12
11
10
8
7
5
6
4
3
2
1
9
GND
-20
-10
STROBE
D
C
B
A
49018
STATION
SELECTION
44020
DTMF DECODER
20
18
27
26
35
17
39
* OR A
* OR A
# OR A
#
OR A
OUTPUT
CLR EXT
OUTPUT
EXT CLR
-21/-56 V
GND
46
19
51
47
43
38
DISABLE
INPUT
A
B
C
D
STROBE
N/A
N/A
47
2
17
M LEAD
-21/-56
VDC
-10 -20
LINE
DROP