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Comfort Pro P System Telephones: Extensions and Accessories Key Extensions
Key Extensions
Up to three key extensions can be connected to each system telephone.
The following equipment combinations are possible:
The number of key extensions connected to a system telephone (up to three) can be set in the Configurator
of the Comfort Pro S’s Web Console (in the menu PBX Configuration: Devices: System Phones or VoIP
Phones ). Here the keys can also be programmed as call keys or assigned functions or destination call
numbers. Users can change this programming as required.
The maximum distance between the connecting socket that the telephone/key extension device combination
is operating through and the Comfort Pro S must be less than 1000 metres. You will need a plug-in power
supply unit Comfort Pro PN power supply unit (product code 4516000) to provide power. The power supply
unit is plugged into the last in the series of key extensions.
System telephone connectable key extension … … with the features
– Comfort Pro P 300
– Comfort Pro P 300 IP
Comfort Pro P 300 TM – 36 keys with LED indicator
– Labelling on label strips
– Comfort Pro P 500
– Comfort Pro P 500 IP
Comfort Pro P 500 TM – 20 keys with LED indicator
– 3 keys with LED indicator to shift
levels; enables programming of
60 storage locations on each key
extension
– Labelling of the keys over the dis-
play; each key is assigned to a dis-
play line
Configuration Needs Power Supply
U
pn
system telephone No
U
pn
system telephone with 1-3 key extensions Yes
IP system telephone Yes