J-Hooks; Strain-Relief Bracket - Cabletron Systems 100BASE-FX Cabling Manual

J-Hooks

J-hooks are cable management devices similar in form and function to D-rings.
Whereas a D-ring, once mounted on a wall, support, or other solid surface, is a
closed hoop through which cable is threaded, J-hooks are open, and simply act as
a support for the cable. J-hooks are often used to provide strain relief at strategic
points in a run of cable or bundle of cables, or may be used in locations where
cables must be added or removed from easily-accessible areas often. An example
of this latter type of installation might be a testing laboratory which provides lines
of J-hooks along the walls for the routing of temporary cables.

Strain-Relief Bracket

The strain-relief bracket is a cable management device that is often used when
networking hardware is mounted in an equipment cabinet or electrical
equipment rack. The strain-relief bracket is a wide, U-shaped metal bar tthat
extends forward from a device which cables plug into.
The strain-relief bracket provides a location where cables may be tied off. This
alleviates the strain of the weight of the cable, removing it from the port or
connector and transferring it to the strain-relief bracket. Cables may be fastened to
strain-relief brackets with wire twist ties, string, or Ty-Wraps.
Facility Cable Management
Figure 13-9. J-Hooks
Figure 13-10. Strain Relief Bracket
1845n37
UTP Cables
1845n38
Cabling Devices
13-11