If the matching COMfortel system phone is powered via the system connection (ISDN bus or PoE) and a key extension module COMfortel Xtension 300 should be attached the optional power supply COMfortel XT-PS ist necessary for the operation (exception: COMfortel 2600 IP. This power supply will feed all connected expansion modules. Starting with the second module it becomes necessary in any case.
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|230 V ±10 %, 50 Hz
40 V DC
Dimensions (w x h x d)
|55 mm x 76 mm x 42 mm
|approx. 340 g
Add-on module for the COMfortel 2600, 2600 IP, 3200, 3500 and 3600 IP telephones with 30 freely programmable function keys
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