PSST security installs and services telephone entry systems
both as stand-alone systems or integrated with access control systems. The system provides visitor access control to buildings. A tenant can communicate directly with a visitor using the telephone entry system and can grant or deny access directly from a telephone landline or mobile phone with the touch of a button.
A hands-free single button phone auto dialer
with major applications in industrial/commercial access control. Once the "call" button has been pressed, the device dials a primary telephone number. When pressing the button, the indicator on the button is on, the host can unlock the door by pressing the * key or # key on the keyboard. when the call is over, it will hang up and the button indicator goes out.
It supports the standard SIP protocol.