Telecommunications Chapter 6 Updated January 2009 XU Zhengchuan Fudan University
XU Zhengchuan Fudan University Telecommunications Chapter 6 Updated January 2009
Telecommunications · From Chapter1: Data communications Telecommunications: Voice and Video Communications RV HIN 6-2
6-2 Telecommunications • From Chapter 1: – Data communications – Telecommunications: Voice and Video Communications
Building Telephone Wiring(f 线) Multi-floor Office Building
Building Telephone Wiring (布 线) Multi-floor Office Building
Figure 6.2: Internal PBx-Based Telephone networt Private Branch eXchange 专用(分组)交换机 4. Termination 5. PBX 7 Vertical 3 Equipment Internal Telephone Riser Entrance Switch Space Facility ■|■ 2. TO 6. Wire Telcos Bundle (Many Pairs) 1. Equipment Room(Usually in Basement) 6-4
6-4 Figure 6.2: Internal PBX-Based Telephone Network 1. Equipment Room (Usually in Basement) 2. To Telcos 3. Entrance Facility 5. PBX Internal Telephone Switch 6. Wire Bundle (Many Pairs) 7. Vertical Riser Space 4. Termination Equipment Private Branch eXchange 专用(分组)交换机
Figure 6.2: Internal PBx-Based Telephone network 1. Vertical 4-Pair UTP Cords Distribution 5. Horizontal distribution ■■■ 4. Cross-Connect Device 3. Telecommunications Closet on floor 2. Wire bundles 6-5
6-5 Figure 6.2: Internal PBX-Based Telephone Network 3. Telecommunications Closet on Floor 2. Wire Bundles 4. Cross-Connect Device 5. Horizontal Distribution 1. Vertical Distribution 4-Pair UTP Cords