Mounting Instructions

Install internal components
Call station interface (RS485) PTO2008-A1
6
A6V10430579_en--_b
111 | 173
6.22.7 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 reference voltage
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 70: PTO2008-A1 call station connectors - 'X5' and 'RJ1'
6.22.8 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 (DC 0 V)
GND reference voltage
4
D+
RS485 data +
5
D-
RS485 data -
6
DC 24 V
DC 24 V
7
SI-
Audio in -
8
SI+
Audio in +
Table 71: PTO2008-A1 call station connectors - 'RJ2' and 'RJ3'