REX-A Sectionalized Space-Division System

The REX system development and all of its main features are described. The speech path is divided into sections which serve all subscribers, and call packing balances congestion between these. Slipping of connections is arranged both within and between these sections, without complication of the call setting data. Dual combined links provide a mix between junction and local traffic to standardize the switching and to simplify the control problem. All ancillary couplings for registers, senders, ringers, etc., are made in series through the speech path network employing the same control while a separate final speech path enables call checking.