In combination with call data management calls can be charged project oriented. The length of the project numbers, e.g. for different clients, can be specified from 2 to 6 digits. With the system phones COMfortel 1100 / 1500 / 2500 (AB) and VoIP 2500 AB these project numbers can be entered at the beginning, during or at the end of a call. On the basis of these project numbers in the call data management every call can be selected and accurately charged for then.
