This app is a Sip application for apartments, houses, buildings which also has a door unlocking button.
If there is a SIP server in the environment, the inhabitants can talk to each other, to the security or connect to the intercom device at the street door.
You can unlock the street door with a single button.
It is enough to introduce the keyed password (DTMF code) to the application to unlock your street door while talking with the door intercom.
If there is a url address that unlocks your street door, you can also define it to the application which adds an "unlock the door" button to the main screen of the app.
The application supports all kinds of codecs.
Especially by installing them on tablet devices located inside the flats next to the street doors, you can make your communication with the street gate intercom, security cabin and other flats as smooth as possible.