Audio interface* 2 and 4 wire systems
4 wire partyline interface - This audio in/out interface connects either to an existing matrix or other analog interfacing products.
2 wire party line interface - The Green-GO 2W Slim Audio Interface links 2-wire analog intercom systems into the Green-GO digital Ethernet network.
4 streams bridge interface* 1RU
Porto interface (i.e. kenwood - Vokkero)