26043 Security Control Equipment
Provision has been made to allow connection of a
locally-provided security control system. For this purpose
the PBS-S KTU contains 2 individual control circuits that,
when activiated, provide an audible alarm through all idle
keyset speakers and a visual alarm on each keyset display.
Each security circuit can be activiated by means of an
external make (closed) or break (open) contact. The SW1
switch on the PBS-S KTU is used to set the desired break
or make detection for security circuit one and the SW2
switch performs the same function for security circuit two.
For connection information to the MDF see Figure 260-3
and 260.4 and Table 240-3.
1M - - 18 2M - - 20
piT=q
p7i-l
SW1 SW2
Fig. 260-2 PBS-S Security Control Switches
260.9 External Amplifier Control
A set of dry contacts is provided on the PBS-S
KTU, which can be used to control an auxiliary relay for
External Paging. Although this option is not required when
an external amplifier is used, it may be desired in some
applications. When an external page is activiated the EAS
and EAM contacts are closed for the duration of the page.
In the idle condition the closure is made between the EAS
and EAB contacts. See Figure 2604 and Table 240-3 for
connection information to the MDF.
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