DETAIL ENGINEERING REQUIREMENTS Section 9, ATT-TP-76400
AT&T January, 2012
SECTION 9 -- CROSS-CONNECT SYSTEMS
CONTENTS PAGE
1. GENERAL .............................................................................................................................. 9-2
1.1. Introduction ...................................................................................................................... 9-2
2. DISTRIBUTING FRAMES (DF) ............................................................................................. 9-2
2.1. General ............................................................................................................................ 9-2
2.2. Zoning and Spread Complete ......................................................................................... 9-3
2.3. Distributing Frame Functions........................................................................................... 9-3
3. DISTRIBUTING FRAME TYPES ........................................................................................... 9-4
3.1. Protector Frames ............................................................................................................. 9-4
3.2. Modular Distributing Frames ........................................................................................... 9-4
3.3. Conventional Distributing Frames ................................................................................... 9-5
4. FRAME BLOCKS ................................................................................................................... 9-6
4.1. General ............................................................................................................................ 9-6
4.2. Connector/Connecting Blocks ......................................................................................... 9-6
4.3. Protected Connectors ...................................................................................................... 9-6
4.4. Distributing Frame References ........................................................................................ 9-7
5. MANUAL DIGITAL SIGNAL CROSS-CONNECT (DSX) ....................................................... 9-7
5.1 General ............................................................................................................................ 9-7
5.2 DSX-1 Considerations ..................................................................................................... 9-8
5.3 Interbay Patch Panels ..................................................................................................... 9-8
5.4 Cross-Aisle Tie Pair Panels & Bridges ............................................................................ 9-8
5.5 DSX-1 Cross-Connect Rules ........................................................................................... 9-9
5.6 DSX-3 Considerations ................................................................................................... 9-10
5.7 DSX Cross-Connect References ................................................................................... 9-13
6. FIBER DISTRIBUTING FRAMES (FDF).............................................................................. 9-13
6.1. General .......................................................................................................................... 9-13
6.2. Satellite Fiber Distributing Frame .................................................................................. 9-15
6.3. FDF Applicability ............................................................................................................ 9-15
6.4. The FDF......................................................................................................................... 9-16
6.5. Fiber Splitters ................................................................................................................ 9-18
6.6. Optical Terminations and Connectors ........................................................................... 9-18
6.7. Attenuators .................................................................................................................... 9-19
6.8. FDF References ............................................................................................................ 9-19
7 ETHERNET DISTRIBUTING FRAMES (EDF) .................................................................... 9-19
7.1 General .......................................................................................................................... 9-19
7.2 Electrical Ethernet Distributing Frames ......................................................................... 9-20
7.3 Electrical EDF Components for the C.O. ....................................................................... 9-21
7.4 Cable Requirements ...................................................................................................... 9-21
7.5 References .................................................................................................................... 9-21
9-1
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