GCall allows you to receive calls made from the door of your house, being possible to see the visitor, answer and open the door. If you cannot answer, the application records unanswered calls with the date and time they were made. GCall can be used by up to 4 users of the same apartment. This application is only compatible with Art 5W/GTwin, GCall/GTwin and GCall-MU/GTwin Golmar devices. Find more information at www.golmar.es