The Akuvox SIP video door phone is an outdoor entry unit that uses the open SIP standard, which means it can connect with a wide range of SIP-based indoor monitors, IP phones and communication platforms. A built-in camera, microphone and speaker let visitors call residents or staff, be seen on screen and be let in by remote door release. Because it follows standard network protocols, it is a flexible choice for apartment buildings, office entrances, gated communities and mixed-use developments where different systems need to work together. Installers value the freedom to combine door phones and indoor devices from different suppliers, while end users benefit from clear video and voice at the entrance.