Headset
Forum Phone 51x/52x/53x: Extensions and Accessories
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1.
Plug the key extension’s RJ45 jack into the system telephone’s RJ45
socket (1).
2.
Screw the key extension onto the system telephone (2).
3.
Plug the power supply unit’s RJ45 jack into the socket provided on the
right-hand side of the key extension.
4.
Pass the power supply unit’s cable through the recesses provided on the
underside of the key extension and the system telephone.
5.
Connect the power supply unit to the mains power supply.
6.
Connect the system telephone with the U
pn
or ethernet port.
Headset
A headset can be connected to the Forum Phone 51x/52x/53x system
telephones and to the Forum IPhone 525/535 IP system telephones.
The headset must comply with the DHSG standard (connection via RJ45 jack).
The manufacturers Plantronics and GN Netcom make devices suitable for this
purpose. Alternatively, you can connect a “normal” headset (RJ11 jack) using
an adapter. The headset must comply with DIN Norm EN 60950-1 Point 6.2
(“Safety of information technology equipment including electrical business
equipment”).
Underside of the device: key
extension (left) and system tele-
phone (right)
This symbol on the system telephone
indicates the connector for the key
extension. It is on the underside of the
telephone. This symbol on the key
extension indicates the connector for a
further key extension.
This symbol on the key extension
indicates the connector for the power
supply unit and is on the underside of the
device. This is the same connector which
can be used instead of connecting an
additional key extension.
1
1
2
2
2
2
