The Adtran OPTI-MX module provides a DS3 or EC1 tributary payload from the OPTI-MX system. The signal is made available through one of the in and out BNC pairs on the OPTI-MX chassis.
Adtran 1184548G2 Data Networking Overview
OPTI-6100 OC-48 ADM Optical Multiplexer Module, Enhanced, Terminates a SONET OC-48 fiber circuit to feed an MX or SMX chassis