For call centres, the PBX provides a range of different functions for almost unlimited collaboration.

The Roaming User function enables users who, for example, work in a large office with workplaces that are not assigned to specific people (i.e. "hot desking") to access any telephone that is configured in the PBX. The user has the known access with his personal settings and authorisations.

If used in combination with the central caller list, the user is given access to all their calls (incoming and outgoing). This requires a COMfortel D-series telephone.

The Groups function is used to assign individual users to different teams or departments and to control their availability, among other things, by logging them in or out.

The Rework time attribute can be used to specify that group members cannot be called after they have received an internal or external call (for example, so that additional work can be performed on the call). During this time, the Do-not-Disturb function is enabled for the user.

Different call strategies can be used to assign inbound calls to group members "properly".

The Announcement before answering text greets callers to a group with an announcement. If the line is busy, callers are placed directly in a waiting loop.

Use the Busy on Busy function to specify the maximum number of connections after which group members can no longer be contacted.

If a group of users is to be able to have an external call at any time, call channels can be reserved for this group.

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.

COMfortel SoftPhone transforms a PC into a fully functioning office telephone.