Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.

Multiplexing is a technique of combining multiple channels of information over a single circuit or transmission path. Multiplexing may also take place in software, where multiple threads of information are delivered to a device or process at the same time.

This topic continues in "The Encyclopedia of Networking and Telecommunications" with a discussion of the following:

• Multiplexing packets across TCP/IP links
• Packet and cell multiplexing techniques
• Channel multiplexing techniques
• FDM (Frequency Division Multiplexing)
• WDM (wavelength division multiplexing)
• OFDM (orthogonal frequency division multiplexing)
• TDM (Time Division Multiplexing)
• Wireless multiplexing techniques, including CDMA (Code Division Multiple Access) and TDMA (Time Division Multiple Access).
• Multiplexer hardware configurations

Refer to "TDM Networks" for more information about building network connections with T1 lines and multiplexers. Note that new and inexpensive network access technologies are now available that reduce the need for expensive carrier-based TDM lines. These include metropolitan Ethernet networks and metropolitan wireless systems. Refer to "MAN (Metropolitan Area Network)" and "Network Access Services."

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