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Chapter 6 - Teleworker Services

The Data-over-Cable Service Interface Specification (DOCSIS)is an international standard developed by CableLabs, a non-profit research and development consortium for cable-related technologies. • DOCSIS specifies the OSI Layer 1 and Layer 2 requirements: Physical layer-For data signals that the cable operator can use, DOCSIS specifies the channel widths (bandwidths of each channel) as 200 kHz, 400 kHz, 800 kHz, 1.6 MHz, 3.2 MHz, and 6.4 MHz. DOCSIS also specifies modulation techniques (the way to use the RF signal to convey digital data). MAC layer-Defines a deterministic access method, time-division multiple access (TDMA) or synchronous code division multiple access method (S-CDMA) | Chapter 6 - Teleworker Services wnr 11IIIIIIIIIIII11II111II111 III 11IIIIIII11II111II111IIIIIIIII BACHKHOA NETWORKING ACADEMY CCNA Exploration 4.0 CISCO 1 Introduction Học viện mạng Bach Khoa - Website www.bkacad.com 2 The Changing Corporate Landscape Học viện mạng Bach Khoa - Website www.bkacad.com