Impedance converter MD4000 series

Ethernetserialline

MD42xx 2 wire version from 64 Kbps to 2.3 Mbps 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. 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. The MD42ET and MD44ET are deployed over European ETSI E1 networks and American ANSI T1 networks meeting the G.703/G704 network requirements. Impedance is either 75 or 120 Ohms and the physical interfaces include BNC and RJ45. 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. 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 MD4230 & MD4430 transports synchronous links at a rate from 64 Kbps to 2.3 Mbps over one copper pair or 4.6 Mbps on 2 copper pair. The MD4x30 can connect to any type of data terminal equipment such as routers, switches, codec etc…. These interfaces can be user defined in software and an adaptation cable is provided to change RS-530, X21, V35 or V28 with DB25 cables to DB15 or M34, DB37 with DCE or DTE mode support. The MD4x30 can also interface with the E1/T1 MD4xET and provide a conversion from E1 to Vxx interface plus a line extension. The MD44FT provides Ethernet or LAN extension with 4 wires up to 4.6 Mbps and up to 17km at 384kbps, over 9/10mm copper.