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E1 to Optical Ethernet Interface Converter with fiber optic interface is a multifunction and high performance L2 switch which build in three port cross engine to realize the conversion between two Ethernet interface and E1 interface. The equipment supports the function used as Ethernet transceiver or Ethernet net bridge or fiber optic modem. As the extension of Ethernet, This converter may realize Ethernet interconnection at low cost via the E1 channel provided by existing network.

Feature :
* In accordance with the provisions of IEEE 802.3、802.3u Ethernet, ITU-T G.703, G.704 and G.823 protocols
* E1 interface framing/unframing optional; balanced 120ohm unbalanced 75ohm optional
* Uses PCM30/PCM31 mode, supporting CRC check
* E1 interface main/ slave clock optional in the framing mode
* In the E1 framing mode, the number of time slots is optional from 1 to 31
* Supports 2.048Mbps transparent transmission in the E1 unframing mode
* Supports 10/100M half/ full duplex modes
* MAC address self-learning and address filtering functions, reducing the transmission load of the E1 circuit
* E1 circuit remote loop and local loop tests
* Pseudo random sequence test, facilitating the test of E1 circuit
* Perfect circuit test and alarm indication
* Two architectures: stand alone and 19in rack mount architecture (16 interface converter modules can be inserted in the rack mount architecture)
* Optional AC 220V or DC -48V input for bridge of both architectures
* Hot rearup of double power supplies is provided for the bridge of rack mount architecture, assuring high reliability