COMT 625

1
COMT 625

• Week 2 Topics

2
Wiring and Transmission

• Key Concepts
• Transmission Media
• Media Type
• Media Capacity vs. type and run length
• Standards
• Structured Wiring Plans/Standards
• In-Building (EIA/TIA Specifications)
• Local Loop

3
Transmission Media

• Twisted Pair
• Most Common
• Range of Standards (Category-x)
• Coaxial Cable
• Good for high frequencies
• Different standards based on frequency range
• CableTV plant
• Wireless systems

4
Transmission Media

• Fiber Optics
• Multi-Mode fiber
• Single-Mode fiber
• Wave Division Multiplexing
• Wireless Media
• Cellular/PCS
• Point-to-Point Microwave
• Satellite Communications

5
Structured Wiring

• Arrangement of Wiring
• Hierarchical
• Flexibility for re-arrangements
• Standards
• Jacks
• Connection of individual wires/fibers
• Size
• Combination of wiring types

6
Analog and Digital Voice

• Key Concepts
• CODEC
• PCM (Pulse Code Modulation)
• ADPCM and others codec negotiation
• Output data rate
• Placement within the network
• Quality of Service Requirements
• Video