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
Is This What You Want? where the Beatles were attending Maharishi Mahesh Yogi's Transcendental Meditation course in the early months of 1968. Harrison was the last Beatle to return from India, on 21 April, after which he and Lomax ran through material intended for the album at Harrison's Esher bungalow, Kinfauns. Lomax recalls first hearing the song "Sour Milk Sea" there, played by Harrison on acoustic guitar with Lomax accompanying on bass. Among Lomax's own material was the Motown-inspired "Speak to Me", and "Is This What You Want?", a song that has been described as both bearing a close resemblance to the Beatles' "I Am