P/N 480-0049-00-13 3-3Chapter 3: InstallationRack InstallLocate the Tenor DX unit within the same area as your PBX, Ethernet hub, switch, router, and/or PSTN patchpanel. The chassis is intended to be installed in a 19” rack.Mounting brackets are attached to the chassis; the rack is not included with your system. Included with thechassis are the screws and clip nuts listed below. The sizes should allow installation in most racks. If your rackdoes not use the same size screws listed in the table, please consult the instructions you received with the rack.Required Materials• 19” rack (not included with system)• #8 - 32 x 3/8 screws (qty: 2) (included with system)• screws as required by your rack manufacturerInstall the chassis in a rack as follows:1. Choose a position for the chassis within the rack.WARNING: If the Tenor DX unit is the only equipment installed in the rack, ensure it is level with the rackto avoid the rack from becoming unbalanced. Mount as low as possible to avoid a high centerof gravity.2. Align the unit’s mounting brackets flush with the rack’s mounting holes (see Figure 3-1) and follow thevendor specific instructions for rack installation. The screws provided require a Phillips #2 screwdriver.3. Ensure the chassis is secured firmly to the rack.