The iConverter Modular T1/E1 Multiplexer transports up to sixteen T1/E1 circuits and 10/100/1000 Ethernet over a fiber transport link or CWDM channel. This flexible and scalable system is comprised of an iConverter TM3 fiber transport module, and one or more iConverter 4xT1/E1 MUX modules installed in a 2, 5 or 19-module chassis.

Each iConverter TM3 module and up to four contiguous iConverter 4xT1/E1 MUX modules combine to form a MUX group. A MUX group can connect with another MUX group at the opposite end of a dedicated fiber link. A MUX group can also interoperate with a Managed iConverter fixed-configuration T1/E1 Multiplexer.