E1/Ethernet bridge BS-2E-01

Technical parameters


BS-2E-01 is a device providing receiving and transmission of Ethernet traffic in E1 stream channels.

The bridge has 4 Ethernet ports, each of them can be connected to one of the 2 E1 ports. The device supports VLAN groups, QoS traffic prioritization.

The connection formed by the device ensures the transparency of all types of packets transmitted in the Ethernet network segments.

BS-2E-01 together with BS4E-3-R bridges installed in regenerator modules can be used for local networking with data transmission via Stream-2 synchronous channels, to connect remote Ethernet network segments, to connect video surveillance systems or measuring systems with the Ethernet interface, to organize Ethernet traffic transit, etc.


  • Four 10/100 Ethernet ports;
  • Two E1 ports;
  • Transparent bridge features;
  • VLAN (Virtual LAN) - up to 16 divided based on:
    • port numbers
    • IEEE 802.1Q tag values
  • QOS (Quality of Service) - 4 queues (FQ) assigned based on:
    • port numbers
    • VLAN ID
    • by ToS field in IP packets
  • 802.3x Flow Control
  • Integrated diagnostics features;
  • Front-panel status indication of all ports;
  • PC management and monitoring.

Technical parameters


E1 interface 
Number of ports 2
Transmission standard As per ITU-T G.703
Line code HDB3
Wave impedance 120 Ohm
Coding As per ITU-T G.704
Integrated input circuit protection  

Ethernet ports 
Number of ports 4
Isolation voltage of a line transformer minimum 1500 V
Modes Auto, 10HD, 10FD, 100HD, 100FD
MAC address table of the network switch 2048 entries

Control port 
Interface RS-232/RS-485 via MSU-2M1S-01

Dimensions (HxWxD), mm 262×35×295 mm