The Oceanogràfic (Valencia) is the largest aquarium in Europe, with a capacity to host 45,000 living creatures of 500 different species. It's integrated into the architectural ensemble of the City of Arts and Sciences, an entertainment-based scientific and cultural complex occupying about two kilometres at the end of the former riverbed of the river Turia. For information and access control functions are installed several intercoms EP-40SIP in doors and corridors. These devices use the SIP open protocol, and communicate with the SIP telephone system or with dedicated control centrals, also SIP.