The Wiki of Unify contains information on clients and devices, communications systems and unified communications. - Unify GmbH & Co. KG is a Trademark Licensee of Siemens AG.
- Phone A and phone B are talking.
- Phone A hooks on, phone B is still off-hook. The LCD display of phone B shows Disconnected, user B hears busy tone.
- After 10 seconds the LCD of phone B falls into idle mode and the busy tone has gone.
- When phone B gets an incoming call now the phone rings and user B can press OK key to answer the call.