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Chapter 2 Technical Parameters
2.1 E1 interface technical data
¾ Standard compliance: ITU-T G703, G704, G823
¾ Interface type: RJ-45
¾ Interface impedance: 120Ω
¾ Interface rate: 2048Kbps±50ppm
¾ Code pattern: HDB3
¾ Jitter: resist 512UI wander
¾ Electrical property: compliant to ITU-T G703
¾ Transfer property: compliant to ITU-T G823
¾ Function property: line bit error detection and line auto-cutoff. Cut off the line automatically when
bit error ratio exceeds 10
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2.2 Optical interface technical data
¾ Standards compliance: IEEE802.3, IEEE802.3u
¾ Transmission rate: 10M/100M self-adaptation
¾ Duplex mode: auto-negotiation
¾ Frame length: 1536 bytes
¾ Flow control: enable flow control function
¾ Buffer: 64Mbit SDRAM
¾ Other properties: IEEE802.1d Spanning Tree supported; IEEE802.1q VLAN packet transparent
transmission support
¾ Automatic cross connection recognition: connect switches and network cards with direct connection
or cross connection at will
¾ Failover function: automatically close down Ethernet interface when all E1 links are inapplicable
2.3 Power supply
¾ Device power consumption: 3W
2.4 Operating environment
¾ Temperature: 0~45℃
¾ Humidity: ≤90%（25℃）
2.5 Storing environment
¾ Temperature: -40~80℃
¾ Humidity: 5%～90%, non-condensing
2.6 Device outline
¾ Physical outline: modular device
¾ Dimension: 91mm(Width) × 25mm(Height) × 172mm(Depth)
¾ Net weight: 0.13Kg
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