A user is set up in the PBX on a person-specific basis with an internal call number. This allows a person to receive incoming calls on different, even changing, telephones.

Incoming calls for a group are controlled by membership in a group and logging in/out.

External incoming calls are controlled by the exchange line routing incoming.

Incoming calls from the door are controlled via door calls.

Further control options, e.g. call forwarding or automatic call acceptance, are listed below.

Incoming calls can be distinguished by different ring tones, if supported by the telephone.

Further options for call differentiation, e.g. by means of indications in the telephone display, are listed below.

With the call waiting function, incoming calls can be signalled during an ongoing call.

With Do-not-Disturb, incoming calls can be switched off if required.

Using pick-up you can take a call on your own phone that was originally sent to another internal telephone or to an own voice mailbox.

If the Pick up all calls to group members function is enabled, one member of the group can not only pick up calls to the group's phone number but also direct calls to individual group members.

The Enquiry prior to pick-up function enables users to see which call they want to receive before they pick it up.

Use the Call forwarding function to forward calls independently of the current situation (immediately, on busy or on no reply). Different call forwarding options are available, depending on whether calls are to be forwarded for a single user, for a group or for external numbers.

Use the Follow-me function to configure forwarding from the destination telephone.

The Multi-Path Call Forwarding function also signals incoming calls on another telephone, even an external telephone, although it does not forward the call.

The automatic reception function receives calls and connects callers with their required destination. If the Announcement before answering function is switched on, calls are placed directly in a waiting loop instead of being rejected if the line is busy. Alternatively, the destination device can be a voice mailbox, which either records a message or plays back an announcement, to provide information.

For incoming calls, contact pictures of the callers can be displayed on a COMfortel D-series telephone (COMfortel D-400/D-600, firmware version 2.6B or later). Contact pictures can be assigned to users (for display during internal calls) and contacts (for display during external calls) for this purpose.

For incoming calls, a COMfortel D-series telephone displays which destination was called (external call number, group, forwarded destination).