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Ethernet Network Termination Unit

 and Line Card for ULAF+ Access Switch




The BSTU is an universal Termination Unit for the ULAF+ product family designed to transmit symmetrical broadband traffic over one or two copper wire-pairs. It offers professional solutions for the delivery of business voice and data services with bandwidths up to 11,4 Mbit/s by using the SHDSL (Single pair Highspeed Digital Subscriber Line) technology according to ITU-T G.991.2. With its modular design and wide range of interfaces the BSTU is a very flexible solution, that can be used to meet specific customer requirements. The BSTU also includes a self learning Layer-2 switch with VLAN transparency.

  • SHDSL.bis over 1 or 2 wire pairs
  • up to 4 E1 systems per unit
  • up to 11.4Mbit/s Ethernet payload
  • add/drop: ‘Fractional E1’ and Eth or nx64kbit/s data into 2Mbit/s G.704
  • add/top: E1 and Eth or nx64kbit/s data over 1 or 2 wire pairs
  • 8 stage repeater support (BSRU/BSRU+)
  • optional integrated remote power supply
  • versatile clocking options


Ethernet Leased Lines and Voice Services over SDH/TDM Networks
Data and Voice Services in a Campus Network up to 11.4 Mbit/s

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