Installation Instructions

Install internal components
Call station interface (RS485) PTO2008-A1
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A6V11899867_en--_a
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6.3.7 Connect to call station
The PTO2008-A1 provides two connectors ('X5' and 'RJ1') to connect the call
stations. 'RJ1' uses a copper Ethernet cable (CAT5) for the connection.
Call station connectors - 'X5' and 'RJ1'
Pin
Description
Remark
1
SO+
Audio-Out +
2
SO-
Audio-Out -
3
GND
GND
4
D+
RS485 data +
5
D-
RS485 data -
6
DC 24 V
DC 24 V (with 500 mA fuse)
7
SI-
Audio-In -
8
SI+
Audio-In +
Table 44: PTO2008-A1 call station connectors - 'X5' and 'RJ1'
6.3.8 Connect to further PTO2008
The PTO2008-A1 provides two connectors ('RJ2' and 'RJ3') to connect the
previous PTO2008-A1 to the next, with all necessary signals with copper Ethernet
cable (CAT5).
Call station connectors - 'RJ2' and 'RJ3'
Pin
Description
Remark
1
SO-
Audio-Out -
2
SO+
Audio-Out +
3
GND
GND
4
D+
RS485 data +
5
D-
RS485 data -
6
DC 24 V
DC 24 V
7
SI-
Audio-In -
8
SI+
Audio-In +
Table 45: PTO2008-A1 call station connectors - 'RJ2' and 'RJ3'