Page 286 - Advanced Course

KNX ADVANCED COURSE

Another common solution for controlling audio systems is shown on the next figure, where
the audio system is coupled with KNX by using a KNX/IP interface.

Audio source 1 Other IP devices (PC,
(e.g. CD player 1) tablets, smart phones)

Audio source 2
(e.g. Radio Central
Unit
Network Switch
… A

Audio source n U IP
(e.g. CD Player 2) D
I IP
Speaker 1
O KNX/IP Interface

Speaker 2 KNX BCU
…

Speaker m

Ethernet

Analog

KNX

Figure 9 - Audio system control via a KNX/IP gateway

While on the previous solution the communication is realized directly from the audio
actuator to the bus, this solution foresees an indirect connection in between KNX and the
audio system using a KNX/IP interface. That means that the central unit is not any more a
KNX-addressable subscriber, but an IP-network addressable device using TCP/IP for
communication. Moreover, as an IP-device the audio system can also be controlled by
other multimedia devices with an IP interface, such as touch panels, computers or mobile
devices.

Home and Building Management Systems KNX Association
Multimedia Systems KNX and Multimedia_E1212b.doc 10/15