Several "Advanced" communication workstations can be configured to form an anteroom system, e.g:

• 1 executive-/ 1 secretary telephone
• 2 executive-/ 1 secretary telephone
• 2 executive-/ 2 secretary telephones

The following advantages arise within an anteroom system:

• Calls within the anteroom system via direct call keys
• Query and transfer of executive conversations with activated filter
• The executive telephone can be reached directly by certain subscribers even if the filter is activated (call filter list required)
• Use of a deputy secretary who receives the executive talks in the absence of the main secretary.