Properly activated presence management is supported by the forwarding functions of communication networks, it leads to better utilization of working time and reduces unnecessary call and waiting times.
Presence management can include all communication devices and services with forwarding functions. The landline phone as well as the smartphone or the IP phone. Whether it is a message or a connection request, the forwarding services support voice, text and video messages. One of the first services of this type was instant messaging( IM), which supports both fixed and mobile devices.