The invention relates to a distributor (1) for use in telecommunications and data technology, whereby the distributor (1) comprises a system side and a subscriber side, which are each formed by at least one distributor connecting module (2, 3). The distributor connecting modules (2, 3) each have a routing side via which the electrical connections between the system side and the subscriber side can be changed. The distributor comprises an access matrix (15) via which the electrical connections between the system side and the subscriber side are established. The electrical connection is connected through by means of the access matrix (15) or, optionally, is connected to a test unit (16) via a test bus (17). The access matrix (15) is placed in the distributor connecting module (3, 2) of the subscriber side or of the system side. The invention also relates to a correspondingly adapted distributor connecting module (2, 3).