The Ericsson TSR9010481/20000 R1F is a GJUL4/TLU Main Distribution Frame (MDF) connection cable designed for 120 Ohm balanced line terminations. This cable provides the physical connectivity between transmission equipment and the MDF in Ericsson telecommunications installations, ensuring proper impedance matching for copper-based circuits.
MDF connection cables of this type are essential components in central office and exchange environments, where they facilitate the orderly termination and cross-connection of subscriber lines and trunk circuits. The 120 Ohm specification indicates suitability for European E1/PCM30 transmission standards and balanced pair applications.
This is a legacy Ericsson product associated with traditional fixed-line switching and transmission infrastructure. While such equipment remains in service at many sites, it represents mature technology from earlier generations of network architecture.
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