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DS-22 WFD IP Weatherproof digital call station (120mm width)

  • Full compatibility with DS-22 system / SPI-22 platform
  • Remotely configurable and monitorable
  • Configuration via WEB interface
  • Dual use - Native SIP protocol / terminal or WL/EL Neumann protocol selectable
  • Half / full duplex compatibility
  • Software PLC
  • Direct voice connections via key-controlled line selection
  • High speech intelligibility
    (up to 22kHz bandwidth - depending on codec selection)
  • Low and high volume control (12dB level reduction)
  • Integrated voice memory
  • Free key assignment as WL target keys or for local functions
  • Integrated Class-D 7W amplifier for horn loudspeakers for best speech intelligibility with wide frequency range
  • Integrated Class-D 7W amplifier for on/off mode or monitoring loudspeaker in standard technology with 8Ω loudspeakers 
  • One Ethernet interface and one service interface
  • Line keys can be freely assigned with destinations
  • Indication of status messages, such as call and busy signals, by means of light-ewithting diodes
  • Cyclic acoustic test for microphone and loudspeaker monitoring
  • Fault management via IoT MQTT interface
  • Adjustable and monitored electret microphone with electronic noise compensation and dynamic compression
  • Dust- and water-resistant glass-fibre reinforced polyester housing
  • Pressure chamber loudspeaker
  • Built-in electret microphone
  • Up to three freely inscribable double toggle speech buttons with opto-couplers, each for two lines
  • Up to three freely inscribable double toggle speech buttons with opto-couplers, each for two lines
  • Switchable volume reduction e.g. for night operation
  • Optional expandability with headset, foot switch or microphone
  • Integrated connection for monitoring or announcement loudspeaker
  • Dialling function with or without keypad
  • EL mode with own additional loudspeaker as standard; volume configurable
  • Potential-free relay contact for connection of a flashing light for visual signalling or a signal horn for acoustic signalling
  • PoE phantom or PoE spare pairs power supply
  • Optional mains node power supply or weatherproof local power supply DC 48V available
  • DR-Intercom and crossing barrier station as integrated special functions for railway applications
  • Disconnection of the auxiliary loudspeaker after the first WL response as a standard feature
  • With and without integrated 30W Class-D auxiliary amplifier in 100V technology
  • Loudspeaker impedance monitoring of the 30W Class-D auxiliary amplifier
  • Optional impedance measurement at the 100V connection of the 30W Class-D amplifier
  • Temperature-controlled power limitation of the 30W Class-D auxiliary amplifier
  • Internal 100V speaker volume setting
  • Optional range extenders available
  • Internal microphone level and loudspeaker volume adjustment
  • Connections and cable glands for additional components, e.g. loudspeaker and controlled powered flashing beacon for visual signalling or controlled powered horn for audible signalling, as standard
  • Mounting of the call station after lifting off the housing cover through four mounting holes in the basic housing

The DS-22 WFD IP weatherproof digital call station is used in intercom systems in the DS-22 decentralised communication system. It enables direct speech connections with other call stations and loudspeaker announcements outdoors and in rooms with a rough or noisy environment, e.g. in factories in heavy industry or in areas of railway engineering.

In the DS-22 decentralised communication system, two variants of the DS-22 WFD IP weatherproof digital call station are available with a dial keypad. Alternatively, the 12 keys of the dial keypad in the DS-22 system can be used as freely configurable line keys, but without optical indication.

With its integrated DR-Intercom and crossing barrier station functions, the DS-22 WFD IP weatherproof digital call station is ideally suited for use in railway applications. These functions facilitate communication between railway operators and enable communication between road users and railway operators of manually controlled level crossings.

The DS-22 WFD IP weatherproof digital call stations described here have one to three double- toggle buttons for up to six lines, or two double-toggle buttons (two lines and two buttons for dialling control) and dialling keypad, and are available in the housing colour pure orange RAL 2004.


With a WFD Add-on housing connected, it is possible to expand the DS-22 WFD IP weatherproof digital call station by an additional 5 double toggle buttons with 10 additional lines, per WFD Add-on housing connected. Up to 4 WFD Add-on housings can be connected to a DS-22 WFD IP weatherproof digital call station. This allows a DS-22 WFD IP weatherproof digital call station to be fully equipped with a maximum of 46 buttons.

The DS-22 WFD IP weatherproof digital call station is connected to the DS-22 network via standard network cables. The standard power supply of the DS-22 WFD IP call station is PoE, a DC 48V power supply from the network node is optionally possible.

The DS-22 WFD IP call station already has an integrated 7W D-class monitoring or paging amplifier in 8Ω technology as standard, and in addition, depending on the delivery variant, partly already has an integrated 30W D-class additional amplifier in 100V technology. Call stations which do not have an integrated 30W Class-D additional amplifier at delivery are prepared for built-in and connection of a 30W Class-D additional amplifier with the L.-No. 221 6001 666 0, see accessories.

Call stations which do not have an integrated 30W Class-D additional amplifier at delivery are prepared for built-in and connection of a 30W Class-D additional amplifier with the L.-No. 221 6001 666 0, see accessories. Here, however, the connection type must be urgently considered, see Installation. Both additional amplifiers can operate a local loudspeaker circuit (LC).

DS-22 WFD IP
Weatherproof digital call station (120mm width)

1 6XX X

Technical data and product information may vary or be changed without prior notice.