<p>How many system phones can I connect to the internal S0 of the Auerswald PBX?</p>

The number of system telephones depends on the power consumption of the existing devices. The maximum power consumption at the internal S0 must not be exceeded.

Available power: max. 4 W per internal S0 bus (all telephone systems with internal S0 bus except COMpact 2204 USB and COMpact 3000)

Required power of the system phones:

  • 1 COMfortel 1200 requires max. 2 W
  • 1 COMfortel 1400 needs max. 2 W
  • 1 COMfortel 1600 requires max. 2 W
  • 1 COMfortel 2600 without power supply unit requires max. 2 W
  • 1 COMfortel 2600 with power supply unit XT-PS required 0 W
  • 1 COMfortel 2500 without power supply unit requires max. 2 W
  • 1 COMfortel 2500 with power supply unit XT-PS required 0 W
  • 1 COMfortel 1500 requires max. 2 W
  • 1 COMfortel 1100 needs max. 2 W

Available power at the internal S0 bus of a COMpact 2204 USB: max. 2 W.
Power available on the internal S0 bus of a COMpact 3000 ISDN/analogue/VoIP: max. 2.5 W.

Depending on the constellation, various telephone combinations are possible on the COMpact 2204 USB or COMpact 3000 ISDN/analog/VoIP, e.g. (max. 2 system telephones):

  • 2 x COMfortel 2500 with plug-in power supply
  • 1 x COMfortel 1500 and 1 x COMfortel 2500 with power supply
  • 1 x COMfortel 1100 and 1 x COMfortel 2500 with power supply

COMfortel 2500 with key extension COMfortel Xtension30 or COMfortel 2600 with key extension COMfortel Xtension300 can only be operated with the power supply unit COMfortel XT-PS.