Computer Integrated Telephony (CIT) are telephone convenience functions that can be accessed and controlled via a personal computer
. The CIT functions include the administration of call numbers with information about the call partners, call management and the keeping of a journal in which all connections
are registered. The database with the call numbers, call partners, call information and the connection journal is connected to the digitalPBX via a Telephony Application Programming Interface (TAPI). Via this programming interface, the computer can select a call partner from the database and establish a call connection with this partner. The call number, call time and call duration are automatically registered in the connection journal.