With private branch exch anges, several connections or call numbers
are combined to form a hunt group or hunt group number. All incoming calls are thus routed directly via the PBX. There are several ways to distribute an incoming call to a hunt group to the extensions. For example, the incoming call can be routed to a free extension or the incoming calls can be distributed evenly among the extensions. Since the extensions of hunt groups usually have their own sequential numbers, each individual extension can be dialled specifically by means of an extension number.