Add-drop multiplexer Add-drop multiplexer An add-drop multiplexer (ADM) is an important element of an optical fiber network. A multiplexer combines, or multiplexes, several lower-bandwidth streams of data into a single beam of light. An "add-drop" multiplexer also has the capability to "add" one or more lower-bandwidth signals to an existing high-bandwidth data stream, and at the same time can extract or "drop" other low-bandwidth signals, removing them from the stream and redirecting them to some other network path. This is used as a local "on-ramp" and "off-ramp" to the high-speed network. ADMs can be used both in long-haul core networks and in
What Is This? their tenure as Anthym, guitarist Hillel Slovak became acquainted with an audience member at one of their shows, Anthony Kiedis, who was then brought on as a roadie and "hype-man" for the band. After a while, the band began to find bassist Todd Strassman's musical abilities unsatisfactory, so they considered replacing him. Slovak decided to teach a friend of his at Fairfax, trumpet player Michael “Flea” Balzary, how to play bass, and soon after he replaced Strassman as What Is This?’ bassist. After graduating high school, the band began to play gigs in the Los Angeles area. Flea eventually left