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 You Came For France, Hungary, Italy, the Netherlands, Norway, Portugal and Slovakia. The song has reached the top 10 in all except three of the countries it has charted in. Taylor Swift performed "This is What You Came For" on the piano for the first time live at the United States Grand Prix in Austin, Texas, on 22 October 2016. Swift then performed an acoustic guitar version at the DirecTV Super Saturday Night in Houston, Texas, on 4 February 2017. This Is What You Came For "This Is What You Came For" is a song by Scottish DJ and record producer Calvin Harris,