image29.gif builds on image28.gif. To the left of image28.gif there are three Voicemail & Fax Servers shown with lines connecting the three to a single PBX. This cluster is enclosed in a circle and identified as the HQNortel PBX-Application Cluster. There is a box with the text: Phone Numbers that belong to the PBX, and a list of the following phone number patterns: 1650506????, 1650607????, and 1650633????.