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Cable and fiber installation
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Office alarm cable installation
Description
Office alarms are the common method used in a central office for maintenance personnel
to quickly isolate a failure. Perform this procedure if connection to the office alarm system
is required.
Note:
at 60 volts or 1.8 amps at 30 volts. The maximum transient currents (20 msec duration)
during initial contact closure must not exceed 9 amps at 30 volts.
If transient voltages or currents are above these limits, transient noise-suppressing devices
such as diodes or contact protection networks must be used to keep within the voltage and
current limits. If these protection devices are not sufficient, an external buffer relay MUST
be provided.
In all cases, and as a matter of good practice, suppression devices such as diodes or contact
protection networks must be provided across any external relay coil being driven by the
Alcatel-Lucent 1850 TSS-5 to limit transient voltages and currents.
Office alarm cable assemblies are listed in
assemblies" (p. 3-19)
connections" (p.
Table 3-9 MDI/MDO/alarm cable assemblies
Description
MDI/MDO Alarm Cable, 26 AWG,
8 conductors, both ends are unterminated
Table 3-10 Office alarm connections
Pin#
11
12
13
14
15
16
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365-372-403R5.1
Issue 1 November 2008
The steady state current for office alarm connections must not exceed 1.0 amp
and Office alarm connection are listed in
3-19).
Color
BL
BL/W
O
O/W
G
G/W
Table 3-9, "MDI/MDO/alarm cable
Cable
Assembly #
848946653
Name
CR/MJ Audible +
CR/MJ Audible -
CR/MJ Visual +
CR/MJ Visual -
MN/ABN Audible +
MN/ABN Audible -
Office alarm cable installation
Table 3-10, "Office alarm
Cable
Length
Access Panel
(feet)
Connections
30
ALARM
3 - 1 9
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