7 Routing Cables
17
Fiber (LC)
≤ 42±1 mm
• When handling optical fibers, do not stand close to or look into the optical fiber outlet directly 
with naked eyes.
• Lead the optical fiber through a corrugated pipe. The mouth of the corrugated pipe must be 
wrapped with the adhesive tape. In the cabinet, the corrugated pipe should not be longer 
than 100 mm. In addition, the corrugated pipe is bound at the cabling aperture.
• The bending radius of the optical fiber should be more than 20 times the cable radius. In 
general, the bending radius of the optical fiber is more than or equal to 40 mm.
To ODF
To ODF
Mode 2 Routing upstream and downstream 
optical fibers separately
Fiber (LC)
Fiber (LC)
Mode 1 Routing upstream and downstream 
optical fibers together
7.9 Routing Optical Fibers (Upstream)