NOTE 1:
An exchange line seizure is indicated by activation of an inaividual
LED on the corresponding ELNB board
for
an outgoing call
or
t h e
application of
ring current
to the line
for
an incoming call.
The
LED does not light if the exchange line is a hot line.
NOTE 2:
The following table illustrates the station numbers and the position
of the
corresponding
ESTB-C
boards
in the Main Equipment.
STATION NUMBER
ESTB-C POSITION
20
23
1
24
27
2
28
31
3
32
35
4
36
39
5
40
43
6
44
47
7
48
51
52
55
56
59
10
60
63
11
64
67
12
68
71
13
72
75
14
76
79
15
NOTE 3:
The following table illustrates the exchange line
numbers and the
position of the
corresponding
ELNB-A
boards
in the Main Equipment.
EXCHANGE LINE
ELNB POSITION
4
1
8
2
9
12
3
*
14 (
L
ED 3
LED
4
15
18
5
19
22
6
23
26
7
Circuits 1 and 2
are
not used.
NOTE 4:
The
on the
board
flash as follows when the
operating correctly :
TOP LED:
ON
1 Second
main
program is
OFF
1 Second
running.
BOTTOM LED:
ON
100
Indicates Data
Transmission
OFF
100
between main equipment and
stations is
operational.
F43
172
ISSUE2