The DS-22 TTSD IP gate and door call station is used in the DS-22 decentralised communication system.
It enables direct voice connections with other call stations, loudspeaker announcements and telephone operation. The DS-22 TTSD IP gate and door call station panel mounted call station is intended for use in outdoor areas. 

Due to its modular design, as well as the arrangement in built-in housings with 3 or 4 integrable modules, it finds its application in many areas of industry and security technology through the programming of many special functions.

The DS-22 TTSD IP gate and door call station is broken down into individual modular assemblies. These include pure pushbutton plates, built-in loudspeakers, built-in microphones combined with pushbuttons, which are mounted in a mounting frame, as well as the integrated electronics in surface-mounted or flush- mounted housings. The flush-mounted housings fit into corresponding building openings provided for this purpose.

At the same time, the DS-22 TTSD IP gate and door call station also offers programmable local functions. In addition to the destination buttons for WL/EL, the DS-22 TTSD IP gate and door call station has monitoring of the electret microphone with electronic noise compensation and dynamic compression, volume control, an integrated voice memory for playing back customised announcement texts, tone sequences or audio files, which can be played back at the touch of a button.

The DS-22 TTSD IP gate and door call station has up to 8 line keys, depending on the modules used.
As standard, the DS-22 TTSD IP gate and door call station is powered via Power over Ethernet. Optionally, however, a DC 48V mains node power supply is also possible. For this purpose, the manufacturer supplies various mounting rail power supply units for installation in the network node.