Abstract: A fiber-based digital loop carrier (DLC) system provides multiplexed optical transport for telephone line circuits between a terminal in a central office and a remote terminal. The remote terminal performs the multiplexing and demultiplexing for interfacing channels on the fiber(s) to individual subscriber line circuits. To expand the capacity of DLC systems to carry broadband services, fibers are run from broadband terminations in the central office to the remote terminal. The remote terminal includes interfaces for coupling to optical fibers, for two-way telephone communications and for broadband communications. This terminal also includes a line card rack, for mounting various line cards and providing appropriate connections of the cards to the channels through the fiber interfaces. Some of the line cards provide normal telephone type service connections for one or more telephone lines.