3Com NBX 900-0208 - Manual (Page 120)

120 A PPENDIX A: T ELEPHONE I NSTALLATION AND M AINTENANCE
Figure 12 Adjusting the Support Bracket
1 Lock tab
To adjust the support bracket, press to release the lock tab, rotate the
bracket to the position that you want, and then release the lock tab.
Figure 13 Wall Mounting
1 Bottom supports
When you mount a device on a wall, attach the support bracket and
adjust it so that the bottom of the support bracket rests against the
bottom supports on the device.
Safe wall mounting requires 3/4-inch drywall and 1.5-inch drywall screws.