LambdaDriver® E3GM/DSGM modules use an advanced Time Division Multiplexing (TDM) technology for combining and simultaneously transporting E3/DS3 circuits and one GE service over one Full Duplex fiber optic trunk to various distances. The EM2009-E3GM and the EM2009-DSGM operate respectively with the E3 (34.368 MHz) and the DS3 (44.736 MHz) protocols. An on-board differential receiver provides high noise interference margin and is able to receive data over a distance of 1000 feet (305 m) of cable or with a cable attenuation of up to 12 dB.
Both modules support local, remote and digital loop-backs.

The modules are transparent to framing format and support HDB3 and AMI line codes and interfaces complying with ITU-T G.703/ Bellcore GR-499-CORE/ ANSI T1.102_1993, and with ITU G.823, G.824, and GR-499-CORE Jitter Requirements.

The aggregated trunk port is SFP based 1Gbps speed; therefore this module can use regular GE SFPs providing distances of up to 120 km without the need for regeneration. It can even utilize CWDM/DWDM SFPs to allow higher service aggregation over a single fiber.