Framed E1 Interface Conve er is an Ethernet bridge of high performance, which accomplishes the conve ing between the 100M Ethernet po and the E1 po . As an extended device of the Ethernet, the FE1 to Ethernet Bridge realizes interconnection of two Ethernet by using the E1 channel provided by existing networks with low cost.
100BASE-TX (RJ45) interfaces are provided at the end of Ethernet LAN to accomplish various functions including MAC address self-learning, address filtering, address table maintenance and flow control.
E1 interfaces conforming to ITU-T G.703 and G.704 proposals are provided at the end of WAN, suppo ing RJ45 and BNC connection modes. The E1 po s suppo both framing and un-framing architecture. The user can select an operating mode for the E1 interface according to the connected E1 environment. This provides flexibility of network application. In the framing mode, the E1 interface provides a rate of N*64Kbps(N=1~31). In the un-framing mode, the E1 channel provides a rate of 2.048Mbps and accomplishes transparent transmission.
The FE1 to Ethernet Bridge provides plenty of self-test functions, suppo ing local loop and remote loop. It also provides pseudo random code test function to test error codes in the circuit.
Features:
- 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/un-framing optional; balanced 120ohm unbalanced 75ohm optional
- The E1 interface uses PCM31 mode, suppo ing 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
- Suppo ing 2.048Mbps transparent transmission in the E1 un-framing mode
- The two 100BASE-TX Ethernet interfaces suppo 100M half/ full duplex modes
- MAC addresses self-learning and addresses filtering functions, reducing the transmission load of the E1 circuit
- Built-in 64Mbits SDRAM Ethernet data buffer memory, improving the capability of Ethernet side anti-outburst, assuring high throughput of data transmission
- E1 circuit remote loop and local loop tests
- Pseudo random sequence test, facilitating the test of E1 circuit
- Perfect circuit test and alarm indication
- Optional AC 220V or DC –48V input for bridge of both architectures
Specifications
- Protocols: G.703, G.704, G.736, G.823, I.431 IEEE802.3u 100BASE_TX
- Circuit interface (E1):
- Impedance: 75Ω, physical interface: BNC
- Impedance: 120Ω, physical interface: RJ45
- Interface rate: framing: N*64Kbps,N=0~31;
- un-framing: 2.048Mbps
- Coding: HDB3,Jitter tolerance in accordance with G.823
- Output jitter < 0.05UI
- Data interface (100BASE_TX):
- Impedance: 100Ω, physical interface: RJ45
- Interface rate: 100Mbps
- Coding: Manchester
- Cable: 75Ωcoaxial-cable, UTP5 twisted pair
- Transmission range:
- Circuit interface: BNC: 600m;
- RJ45: 300m Data interface: 100m
- Indicators: indicating power, connection states of data and circuit interfaces, operation state, test state and trouble alarm.
- Dimensions: 210mm (dep) x 140mm (wid) x40mm (hei)
- Power supply:85V~264V AC input, 5V/1A output
- -36V~-72V DC input,5V/1A output
- Power dissipation:3W
- Operational temperature: 0℃~+50℃
- Storage temperature: -20℃~+80℃
- Humidity: 5%~90% (no condensation)
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