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Jul 20, 2025
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TEL 220 - Telecommunications II Credits: 4 Lecture Hours: 4 Lab Hours: 0 Practicum Hours: 0 Work Experience: 0 Course Type: Voc/Tech Covers basic telecommunications equipment used by businesses and its connection to a switched public or private network. Covered subjects include electronic key systems, private branch exchange systems (PBX), trunks and associated equipment. Analog and digital communications and associated equipment are also covered. Experienced individuals may contact the instructor to gain admittance to this course. Corequisite: TEL 223 Competencies
- Discuss common technological aspects of Telecommunications
- Identify aspects of local public telecommunications systems.
- Identify aspects of switched interexchange systems
- Identify aspects of private telecommunications systems
- Compare public and private telecommunications systems
- Draw system block diagrams for private and public systems
- Identify transmission link types used in public and private systems
- Identify PBX features and functions.
- Discuss hardware and software features
- Compare use of optional CPE and PBX equipment to CENTREX/CO
- Compare the characteristics of various Transmission media.
- Identify the uses of different levels of unshielded twisted pair (UTP)
- Identify characteristics of Coaxial and shielded twisted pair (STP).
- Identify characteristics of waveguides and wireless
- Identify characteristics of Fiber-optics.
- Discuss media characteristics
- Discuss common Transmission forms
- Identify analog transmission types
- Identify digital transmission types
- Identify the relationship between frequency, speed and bandwidth
- Identify simplex, half-duplex, and full duplex transmission.
- Explain signaling procedures and signaling types
- Explain why signaling on telephone transmission links
- Compare E & M signaling types.
- Explain digital signaling and transmission
- Compare CCS and SS7 with channelized signaling types
- Explain switching and networking techniques
- Identify mechanical switching principles
- Identify common control switching principles
- Identify space-division multiplexing
- Compare space division and time-division multiplexing
- Explain computer-controlled switching
- Explain call routing techniques
- Identify single-switch routing techniques
- Explain routing in multiple switch networks
- Identify routing techniques used in private networks
- Discuss digital telecommunications techniques
- Identify the basic principles of digital information
- Identify digital carrier systems and levels
- Identify SONET OC- and STS-levels
- Identify the number of DS-3s in each OC-level
- Discuss common trunk circuits
- Discuss ‘IMT’ trunks
- Discuss ‘inter-switch’ trunks
- Discuss ‘feature group ‘D” trunks
- Discuss and explain T1 circuits
- Discuss T1 history
- Discuss T1 use
- Discuss T1 capabilities
- Discuss advanced test equipment
- Discuss spectrum analysis
- Discuss multi-function test sets
- Discuss ‘section analysis’.
- Discuss emerging technology
- Discuss xDSL
- Discuss fiber to the home
- Discuss wireless access
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