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? Come Back". The 2010 remaster offered previously unreleased songs recorded during Lomax's two years on Apple Records, as well as additional tracks for download, including alternative mixes of "Sour Milk Sea", "The Eagle Laughs at You" and "New Day". Omitted from this 2010 CD, "Going Back to Liverpool" and the stereo mix of "New Day" instead appeared on the bonus discs included in the 17-disc "Apple Box Set". On release, "Is This What You Want?" received enthusiastic reviews. In a 1970 interview with Robert Greenfield of "Rolling Stone", however, Lomax lamented that commentators tended to focus on the line-up of