The MD42ET and MD44ET are used to interconnect PBX or to extend the E1-MIC/PRI Telco connection to the PBX at a very reasonable cost. The MD42ET and MD44ET are particularly convenient for Telco’s local loop and can be provided with 4 wires repeaters powered over the line from the central office. Impedance is either 75 or 120 Ohms and the physical interfaces include BNC and RJ45. The MD42ET and MD44ET are deployed over European ETSI E1 networks and American ANSI T1 networks meeting the G.703/G704 network requirements. It also includes the transport of Point-to-Point serial interfaces X21/V35/V28, Telecom’s interfaces MIC E1/T1, ISDN E1-PRI or S0/T0 BRI, or to extend a LAN over one or two pair of copper. MD44xx 2/4 wire version from 64 Kbps to 4.6 Mbps The MD-4000 is a new generation of modem which has been developed for local loop extensions or for customer application such as voice, leased line and data extension. MD42xx 2 wire version from 64 Kbps to 2.3 Mbps
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