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Aria-34e
Installation
Digital Key Telephone System
There are two general purpose relays in the MBU and these contacts are connected
through CHAMP connector (CN14) of the MBU. The detailed pin assignments of
these contacts are shown in Table 1. The dry relay contact can be used to power
ON/OFF functions for external amplifiers. The control of these relays is defined
through system programming.
For example, the following Figure 36 shows how to connect external amplifier with
relay and external paging port.
Figure 36. EXTERNAL PAGING WIRING EXAMPLE
Also, these two dry relay contacts can be used to Loud Bell Control function, Door
Opening Latch function, etc. under software control. Note that the maximum rating of
the relay contact is 24Volt/1A.
4.7.10 Alarm Detect Port Wiring
One external alarm detect input port is provided from the CHAMP connector (CN14)
of the MBU. This port is used for notify predefined extensions when the Alarm
detection port is detected to switch ON/OFF. This contact detection can be defined as
being normally open or normally closed. The connection example is shown in Figure
37 and the pin assignments are shown in Table 1.
Figure 37. EXTERNAL SWITCH WIRING EXAMPLE
4-43
Rev 1.3
Aria Communications Pty Ltd.
A.C.N. 090 723 925
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