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POWER SUPPLY
DC PSU
Fuse
6
Message monitoring and abort connections
A 5-way connector provides the interface to local
Pbx I/P
MONITOR
A SIDE O/P
loudspeaker for listening to the message being recorded
and for a push button to prevent the message from
broadcasting if required.
3
4
5
Cable Specification
2off Twisted pair, individual and
overall screen.
0.25 mm² to 0.5 mm² (ferrules with
sleeve)
0.25 mm² to 1.5 mm² (ferrules
without sleeve)
Table 5 – Message monitoring interface description
Typical wiring connections
Figure 4 – Message monitoring and abort
3.3.3 Isolated audio and key line connections
Two 5-way connectors provide a duplicated interface for
isolated audio and control lines for connection to other
third party equipment operating alongside the RJ45
connections. These interfaces can be used to replace
the RJ45 connections provided they are connected to
an IO Tu unit's audio input, usually when installed in a
separate cabinet with PABx equipment.
Cable Specification
2off Twisted pair, individual and
overall screen.
0.25 mm² to 0.5 mm² (ferrules with
sleeve)
0.25 mm² to 1.5 mm² (ferrules
without sleeve)
Table 6 – Audio & Key line interface description
Cancel
Zoned / Global
Source Select
Reset
7
8
Fault
48V
O/P
DC
B SIDE O/P
N/C
I/P
Com
+ -
6
7
Type
Description
Output
Audio output
Output
Audio output
---
Screen
Input
Keyline 1
Input
Keyline 2
Push button connection
Screen
Loudspeaker connection
Type
Description
Output
Audio output
Output
Audio output
---
Screen
Output
Keyline 1
Output
Keyline 2
SONIX PBX TECHNICAL MANUAL TM372 / A June 2022 www.eaton.com
R
Sonix Pbx
TM
Typical wiring connections (A-side & B-side
Label
A1
A2
Figure 5 – Isolated audio and Keyline outputs
SCN
COM
3.3.4 Power connections
N/C
The Sonix Pbx is powered via a 2-core 48 V dc input
on the rear of the unit. This input should be connected
to the managed 48 V dc power output from the Sonix
PM10 power management unit.
Note: As these cables are power feeds they should
be routed within the PA/GA system in a way so as to
avoid contact with signal or audio cables and other high
voltage cables.
Cable Specification
2off Twisted pair, individual and
overall screen.
0.25 mm² to 0.5 mm² (ferrules with
sleeve)
0.25 mm² to 1.5 mm² (ferrules
without sleeve)
Table 7 – Power interface description
Pbx I/P
DC Power connection
Label
A1
Primary Unit ID 1
Figure 6 – Power connections
A2
SCN
3.3.5 General fault output connections
K1
The general fault output is a low voltage, volt free
K2
contact output. The output can be set in configuration
to either normally open or normally closed. It is
recommended that the output is set to normally closed
so a loss of power to the unit will be detected.
Pbx I/P
Sonix Pbx Technical Manual
0Vdc (-)
Power connection
48Vdc (+)
Com
General fault connection
N/C
Type
Description
Input
+48Vdc
Input
0Vdc
Pbx I/P
0Vdc (-)
48Vdc (+)
Secondary Unit ID 2+
Com
N/C
2-Wire connection
Screen
E&M connection (optional)
)
Keyline connection
Screen
Audio connection
Label
+
-
Power conn
2 wire
Telephone I/F
General fau
Pbx I/P
11
2-W
Scr
E&M
Key
Scr
Aud
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