3Com VCX V7122 SIP VoIP Gateway User Manual282 Use standard 19-inch rack bolts (not provided) to fasten the device to the frame of therack.3Com recommends using two additional (not supplied) rear mounting brackets to provideadded support.To place the device on a 19-inch rack’s shelf, follow these steps:1 Place the device on the preinstalled shelf.2 You’re now recommended to take the optional steps of fastening the device to the frameof the rack (as described above) while it is placed on the shelf, so preventing it fromsliding when inserting cables into connectors on the rear panel.Cabling the VCX V7122See Chapter 2: VCX V7122 SIP Physical Description on page 19 for detailed information onthe VCX V7122 rear panel connectors and LEDs.Note that the VCX V7122 is available in many configurations, i.e., AC or DC, in the 16-trunk,8-trunk, 4-trunk, 2-trunk or 1-trunk device. The 16-trunk dual AC (see Figure 8) and the8-trunk DC (see Figure 9) configurations are illustrated here as representative products.Figure 8 VCX V7122 Rear Panel Cabling (16 Trunks, Dual AC Power)Users assembling the rear brackets by themselves should note the following. Thedistance between the screws on each bracket is 26.5 mm. To attach the brackets,use 4-40 screws with a maximal box penetration length of 3.5 mm.52 43 21 1
