British Telecom ESCORT, System Manual

Page: 12 / 36

FIG.3.3 CONNECTING THE EXCHANGE LINES
A 'W'-B
B
B-W
C if re
CCU EXCHANGE LINE TERMINAL STRIP
A BCD�
cable equip
2503-
0
not
used
t
.5mm2 earth wire
•
0
(
if requirttd
)
1
to other excha09e line
·o ·
terminal
Locally provided
5
amp block connector
Note
3
NOTE
1.
For earth recall, provide functional earth and strap B-C
NOTE
2.
For C-wire si9nal11n9, provide functional earth and set
optlon switch
3
to the 'ON' position.
NOTE
3.
Suitable connectors are B.T. Block Terminal 58A/12 and
Farnell Electronic Comonents order code
146-260
F 16.3.4 CONNECTING THE EXTENSIONS
CCU EXTENSION TERMINAL STRIP
A
B C D E
cable equip 2503-
W-G
G-'w'
'W'-0
B-'W'
'w'-B
lJU-/lA
1
2
5
Connections C,
D
and E are not required for two wire extensions
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