T-Comfort Comfort Pro S, Mounting And Commissioning Manual

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Comfort Pro P System Telephones: Extensions and Accessories Key Extensions
A system telephone requires a power supply unit if a key extension is installed. When using PoE, an IP system
telephone requires no power supply unit.
Connecting the Key Extension
Caution! Guard against static charges!
Static charges can damage the Comfort Pro S’s electronic components. Make sure
you discharge yourself and your tools before and during any installation work on the
Comfort Pro S and any connected terminals. Use discharging underlays or antistatic
mats where possible.
S
Please note: Never attach a key extension to a system telephone that is already
connected to Comfort Pro S. Pull the network cable out of the socket before screwing
the key extension onto it.
IP system telephone Yes
IP system telephone with 1-3 key extensions Yes
IP system telephone with PoE (Power over Ethernet) No
IP system telephone with 1-3 key extensions and PoE No
Underside of the device: key extension (left) and
system telephone (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.
Configuration Needs Power Supply Unit
1
1
2
2
2
2