The DM991C 4W is a G.shdsl modem with E1 interface (G.703/G.704) and digital interface (V.35 - V.36/V.11) that can be used to transmit voice and data at up to 11,392kbit/s (BIS version) simultaneously. G.shdsl-compliant (ITU-T G.991.2) – the most modern and high performance HDSL modem standard.

The DM991CE 2W is a G.shdsl modem with E1 interface (G.703/G.704), digital interface (V.35 - V.36/V.11) and Ethernet (10/100BaseT) that can be used to transmit voice and data at up to 5,696kbit/s (BIS version) simultaneously. G.shdsl-compliant (ITU-T G.991.2) – the most modern and high performance HDSL modem standard.

The DM991CE 4W is a G.shdsl modem with E1 (G.703/G.704), digital (V.35-V.36/V.11) and Ethernet (10/100BaseT) interface that can be used to transmit voice and data at up to 11,392kbit/s (BIS version) simultaneously. G.shdsl-compliant (ITU-T G.991.2) – the most modern and high performance HDSL modem standard.