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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Connecting Fiber Optic Cables
Page A-18Routing Fiber Optic Cables
A
To Make a New Interconnection
1. At the LIU, locate the cable to be moved and unplug it from the coupling.
2. Carefully unwind the cable from around the retainer rings, remembering
the minimum bend radius.
3. If it is necessary to remove the cable from the LIU, carefully guide it
through the split rings in the LIU.
4. Locate the appropriate connection on the other side of the interconnect
field and carefully route the cable through the split rings of the LIU.
5. Carefully unwind the cable from the retainer rings, remembering the
minimum bend radius.
6. Plug the cable into the appropriate connector coupling.
7. Label the cable for the changed circuit.
8. Test the circuit using the test fiber link commands in
DEFINITY Enterprise
Communications Server Release 6 Maintenance for R6r
.
Routing Fiber Optic Cables
Cable Slack Managers or Raised Floors
When using either cable slack managers or raised floors, route the fiber cable to
the outside of the carriers behind the rear connector panel and cable troughs. Do
not route fiber in the side cable troughs used for the B25A cables. However,
since the B25A cables route out of the bottom of the trough, loop slack fiber at
the top of the trough.
Protect cables routed between cabinets with a fiber protector cover. When
routing fiber to a cabinet that is not adjacent, route the fiber back into and under
the top of the intermediate cabinet.
Fiber optic cable requires connection to an LIU or shelf for connection to remote
cabinets or for connection to the outside fiber plant. In some systems, it may be
necessary to run fiber with the I/O cables such as in the cable slack manager or
under a raised floor. In these cases protect the fiber by running it in a dedicated
area if possible. In any situation where the fiber optic cable must be run with
other cabling, protect it by first running it through flexible conduit.
Overhead Ductwork
With overhead ductwork, route the fiber cable to the outside of the carriers, along
the cable troughs, and into the shielded ductwork.
Do not route fiber in the side cable troughs that are used for the B25A cables.
Use the shielded ductwork to manage slack fiber at the top of the cabinet.