Insert indoor optical cables into a splice frame by preparing the cable, securing it with sealing and clamps, routing fibers into splice trays, performing splicing, and organizing excess fiber carefully.

Step 1: Prepare the Cable

• Strip the outer jacket of the optical cable according to the manufacturer's instructions, exposing the loose tubes and strength members while leaving a service loop of 10–15 cm inside the frame for flexibility ( ).
• Clean and abrade the exposed cable using a cleaning solution and sandpaper to remove excess filling and ensure a smooth surface for sealing ( ).
• Attach sealing rings that match the cable diameter and wrap self-adhesive sealing tape between them to form a sealed cable end ( ).

Step 2: Insert and Secure the Cable

• Position the cable into the designated entry port of the splice frame or wall box ( ).
• Connect and ground any shield layers if present.
• Secure the cable using a hose clamp or cable tie to the base of the splice frame, ensuring stability and preventing movement ( ).
• Seal unused ports with plugs and sealing tape to maintain environmental protection ( ).

Step 3: Route Fibers into the Splice Tray

• Reserve a service loop of approximately 1.5 turns of fiber behind the tray to allow for future maintenance ( ).
• Use buffer tubes: single-core buffer tubes for individual fibers and ribbon buffer tubes for ribbon fibers.
• Secure fibers at the tray entry with nylon ties, using color coding (e.g., green for outgoing, blue for customer fibers) to distinguish connections ( ).

Step 4: Perform Fiber Splicing

• Fusion or mechanical splicing: Cleave fibers cleanly and insert them into the splice unit. For fusion splicing, add heat-shrink protection and place the splice in the tray ( ).
• Coil excess fiber neatly within the tray to avoid tight bends (minimum bend radius ~30 mm) ( ).
• Stack trays according to the frame's capacity, ensuring accessibility for maintenance. Trays can be accessed like turning pages in a book ( ).

Step 5: Organize and Close the Frame

• Arrange fibers and pigtails to prevent tangling and maintain a neat layout.
• Trim excess cable ties and secure all fibers.
• Close the splice frame or wall box and lock the cover to protect internal components from dust and physical damage ( ).
• Test connections using a fiber power meter or light source to verify signal integrity and continuity ( ). Following these steps ensures a secure, organized, and high-performance installation of indoor optical cables into a splice frame, minimizing signal loss and facilitating future maintenance.