Wiring
108
UDACT Instruction Manual PN 50050:H 09/16/2002
Below is a remote installation of a UDACT with an NCA:
Figure 27 UDACT and NCA in Separate Cabinets
Below is an internal installation of a UDACT with an NCA:
Figure 28 UDACT and NCA in the Same Cabinet
NOTE: Use Table 51 and in Appendix I: AM2020/AFP1010 as worksheets for the NCA.
EARTH
Comm FAILURE
+24V
+24V
GND
RS+
RS–
SHIELD
RS+
Rs–
ACS/TERM
TERM
To Phone Lines
(supervised)
Solid Earth
Ground
Connection
ABS-8R or UBS-1
NCA
UDA
CT
-1
3b
.c
d
r
DO NOT USE
Ferrite Cores
EARTH
Comm FAILURE
+24V
+24V
GND
RS+
RS–
SHIELD
RS+
Rs–
ACS/TERM
TERM
DO NOT USE
To Phone Lines
(supervised)
Connect to
Chassis
UDA
CT
-1
4
b.cd
r
NCA
Ferrite Core
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