4 wire partyline interface - This audio in/out interface connects either to an existing matrix or other analog interfacing products.
The GreenGo Communication system is based on an ethernet network. The 4W Slim Audio Interface (SI4W) can be used in this network - it links any 4-wire analog intercom systems into the GreenGO network. It is an audio in/out interface and is connectable to existing matrix or other analog
interfacing products. With this, an audio signal can be injected into the GreenGO network and transmitted to any other location in the same Ethernet network.