MCL82 was designed to work with equipment from '82 to about '85 - such as the Beocentre 7007, 7700 or Beosystem 5000. It will not work with a Beolink 1000.
You would need an MCL 2A .
See the product listing on this site and you should pick up the following:
MCL 2A
Standing for Master Control Link, this system allowed for the main music and video system to be linked up with other rooms. Using the Beolink 1000 remote control, you could, for example, sit in the study and operate both sound and pictures from the main system in the living room. MCL2A formed part of the X-tra Speakers kit.