Abstract: A system for providing access to subscriber lines includes a plurality of blade test access modules, including: a first blade test access module configured to engage with a first portion of a distribution frame. The first blade test access module includes first substrate, a plurality of first conductors positioned to engage with first terminals of the distribution frame, and one or more switches to control access to a first plurality of subscriber lines connected to the first terminals. The plurality of blade text access modules also includes a second blade test access module configured to engage with a second portion of the distribution frame. The second blade test access module includes a second substrate, a plurality of second conductors positioned to engage with second terminals of the distribution frame, and one or more switches to control access to a second plurality of subscriber lines connected to the second terminals.