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The M8E1/FE card also has three RJ45 ports, which provide three FE interfaces. Each FE interface can be independently configured with parameters. The optional working modes are: 1) uplink interface 2) downlink service interface. Supports "auto-negotiation" and "automatic MDI/MDIX crossover" functions. Built-in Layer 2 switching function, support VLAN function, when setting VLAN, each Ethernet interface can work independently and support port speed limit function.
Interface type: E1
Number of interfaces: 8 channels
Baud rate: 2.048 Mbps
Interface impedance: 1) 75 ohms / unbalanced
2)120 ohms / balance
Line code: HDB3
Standard: ITU-T Rec. G.703, G704, G.732 (including CRC-4 and E bit)
Frame structure: 1) G.704 basic frame mechanism (G732N), with/without CRC-4, accordance with ITU-T Rec. G.704
2) 16-slot multiframe structure (G732S), with/without CRC-4, accordance with ITU-T Rec. G.704
3) Non-frame structure (unframed mode)
Sending level: 1) Balance: ±3V (±10%)
2) Unbalanced: ±2.37V (±10%)
Receive level: 0~-6dBm
Jitter performance: in accordance with ITU-T Rec. G.823
Surge protection: in accordance with ITU-T Rec. K.21
Connector: DB44 (female), 1 out 8E1 cable (optional)
Interface type: Ethernet interface (FE1, FE2, FE3)
Number of interfaces: 3
Interface type: 10/100BaseT Ethernet (10M/100M adaptation and parallel/crossover cable adaptation)
Duplex mode: half duplex / full duplex
Working mode: 1) Uplink interface
2)Downlink service interface
3)Network management monitoring interface
* Any Ethernet interface can be configured with one of the above operation modes
Network standards: IEEE 802.3u, 802.3x, 802.1p and 802.1Q
VLAN: 1) based on IEEE 802.1Q
2)based on Ethernet port
VLAN tag: support up to 64
Port speed limit: 0 (factory default, unlimited speed), 8k, 256k, 512k, 1M, 2M, 8M
Jitter absorption: 2.5ms ~ 200ms
Connector: RJ-45
Interface Type: Node Clock Interface (ECK)
Number of interfaces: 1
Rate: 2.048 Mbps
Type: ITU-T Rec. G.703, HDB3 coding
Connector: RJ-45
