Monolith IP/VoIP door intercom for integration into an existing network with a SIP server or as a peer-to-peer device for direct dialing to an endpoint. The door conversation can be accepted with video via SIP video phones, a Windows pop-up program, an Android app, a Fritz!Fon (e.g., C4), or an iPhone/iPad app. Pure voice communication is possible on all phones, depending on the system configuration.

The Monolith B can be expanded with multiple cameras, and depending on the app, it is possible to receive up to 4 streams simultaneously. For example, the front camera of the Monolith B can be supplemented with a side-view camera of the door, and the respective app can switch between both cameras before answering the call.