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 Wondrous Love Is This Bryan included "What Wondrous Love Is This" in his folk opera "Singin' Billy". In 1958, American composer Samuel Barber composed "Wondrous Love: Variations on a Shape Note Hymn" (Op. 34), a work for organ, for Christ Episcopal Church in Grosse Pointe, Michigan; the church's organist, an associate of Barber's, had requested a piece for the dedication ceremony of the church's new organ. The piece begins with a statement that closely follows the traditional hymn; four variations follow, of which the last is the "longest and most expressive". Dwayne S. Milburn composed a prelude on "Wondrous Love" as the first movement