8
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: 120
Ω
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
P
-6
P
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
