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
This Is What I Do (Sonny Rollins album) Do" is unmistakable, and great Sonny Rollins." The album won a 2001 Grammy Award for Best Jazz Instrumental Album. All compositions by Sonny Rollins except where noted. This Is What I Do (Sonny Rollins album) This Is What I Do is an album by jazz saxophonist Sonny Rollins, released on the Milestone label in 2000, featuring performances by Rollins with Clifton Anderson, Stephen Scott, Bob Cranshaw, Jack DeJohnette and Perry Wilson. The Allmusic review by Alex Henderson states: ""This Is What I Do" falls short of essential, but it offers some nice surprises and is a rewarding addition to Rollins'