10/100 Base-T Ethernet to 8E1 Converter
NIC-8EB
NIC-8EB Bundling of up to 8xE1 (max 15.872Mbps simultaneously for both direction of transmitting and receiving) can be used in Ethernet over SDH or PDH application with high speed, which is an ideal equipment for point-to-point application or internet access.
NIC-8EB has an optional 100Base-Fx fiber optical interface to extend the Ethernet signal transmission range up to 120Km. NIC-8EB can be directly connected to the 100Base-Fx port of a media converter or an Ethernet switch.
NIC-8EB supports end-to-end SNMP management. In-band remote management can realize the monitor and configuration of the remote standalone unit via the local card unit in NIC-iRACK. Furthermore, if the NIC-8EB using 100Base-Fx fiber optical interface connects directly with NIF-iSA/V5 which is an Ethernet fiber media converter made by our company, In-band remote management can realize the monitor and configuration of both the remote NIC-8EB and the downstream NIF-iSA.
NIC-8EB has the function of E1 channel performance monitor and protection. Operators can set a BER threshold in 1x10-4, 1x10-5 or 1x10-6 level for E1 channels. When the bit error rate of one E1 channel is beyond the threshold, NIC-8EB will automatically shut down the data transmission of this channel to avoid the packet loss. And when the bit error rate of this E1 channel is less than the threshold value, the unit will automatically resume the E1 channel for data transmission.
Extraordinarily, NIC-8EB shuts down the bad E1 channel unilaterally to keep the maximum transmission bandwidth. For example, NIC-8EB will shut down the input and keep the normal output of this E1 channel when only the input BER of this E1 channel is beyond the threshold.
NIC-8EB allows 16ms of transmission delay between its random 2 E1 channels to ensure the correct frame sequence for recovering the IP packet. This can raise the data transmission efficiency greatly to avoid the resending of IP packets.
Features
- High quality Ethernet bridge
- Low-cost Ethernet extension converter or reaper
- Supports 1~8xE1 channel integration
- Speed: up to 15.872M bps
- Compliant with IEEE 802.1q, 802.3, 802.3u, ITU-G.703, G.704 G.823 standard
- Network Interface: 10 /100 Base-T or 100Base-Fx (100Base-Fx only for standalone unit)
- Transparent full duplex /half duplex/auto-negotiation mode
- Supports up to 1552-byte jumbo packets
- Supports VLAN trunk
- Automatic selection of available E1 channel and recovery per channel possible
- Allows 8 E1 channels on 16 ms delay of transmission
- BER threshold setting of E1 channels to ensure the data transmission
- Shuts down the bad E1 channel unilaterally to keep the maximum transmission bandwidth
- Standalone and card unit
- Supports SNMP management via local card unit in rack
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Typical Application
Technical specification
Summary
Relay Rate |
up to
15.872Mbps
|
System cache |
16M bits |
Dimension |
Standalone: 438 mm/17.24 in (W) × 133 mm/5.24 in (D) ×44.45 mm/1.75 in (H)
Card: 28mm/1.10 in (W) × 250mm/9.84 in (D) × 144mm/5.67 in (H) |
Weight |
Standalone: 1.86Kg
Card: 0.3Kg |
Power |
165 to 265 VAC, 50 or 60 Hz, 5VA;-36 to -72 VDC, 5W (only for standalone unit) |
Temperature |
0℃-50℃ for operation;-20℃-70℃ for storage |
Humidity |
≤90% (non-condensing) |
E1 interface specification
Function |
Provide 8 E1 line ports for Ethernet data transmit |
Framing |
Framed, CCS |
Standard |
ITU-T G.703, G.704, G.823 and G.742 |
Code |
HDB3 |
Clock |
Recovery, receive the timing clock from E1 channel |
Rate |
1984 Kbps±50ppm for each E1 channel |
Transmit Level |
According to G.704 |
Impedance |
75Ω for unbalanced (BNC coaxial cable)
120Ω for balanced (RJ-45 twisted pair) |
Receiving sensitivity |
0~-18dBm |
Transmit high voltage |
2.37V± 10%, 75Ω;3.00V± 10%,120Ω |
Transmit low voltage |
0 ± 0.1V |
Input jitter tolerance |
512UI |
Output jitter tolerance |
<0.05UI |
Connector |
BNC female or RJ-45 jack for standalone unit;
DB-37 female connector with 1 to 10*BNC (or 5*RJ-45) header adapter cable for card unit |
Transmitting distance |
100m for coaxial cable, 200m for twisted-pair |
Ethernet interface specification
Function |
Alternative 10/100Base-T or 100Base-Fx port, support VLAN Trunk and flow control |
Standard |
IEEE 802.3802.3u802.1q |
Interface |
Ethernet and Fast Ethernet |
Baud rate |
Full rate 10/100Mbit/s, auto-adjusting/force mode |
Duplex Mode |
force or Auto-Negotiation on Half / Full Duplex Mode |
Connector |
10/100Base-T: RJ-45 jack, auto MDI/MDI-X
100Base-Fx: SC or FC
|
Frame Length |
64byte(least)/1552byte(most) |
MAC Address |
1024 |
MAC Address Update |
5 Minutes |
Transmission medium |
10/100Base-T: CAT5 twisted pair;
100Base-Fx: G.652 optical fiber, Multi-mode fiber 50/125µm or 62.5/125µm, single-mode fiber 9/125 um
|
Transmit distance |
100m for twisted pair, 2Km for multi-mode fiber cable, up to 120Km for single mode fiber cable |
