Chapter
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3-19
An EICMB is composed of the EICM on the base plate of Ethernet uplink unit and an
enhanced Ethernet subboard FNC. The subboard FNC provides four channels of
10/100M Ethernet electrical interfaces conformable to IEEE 802.3u Standards and four
channels of 100M optical interfaces.
An EICMC is composed of the EICM on the base plate of Ethernet uplink unit, a Layer
2 Ethernet uplink card FEC, and an enhanced Ethernet subboard FNC. The FEC
subcard provides four channels of 10/100M Ethernet electrical interfaces conformable
to IEEE 802.3u Standards and four channels of 100M optical interfaces. The FNC
subboard provides four channels of 10/100M Ethernet electrical interfaces conformable
to IEEE 802.3u Standards and four channels of 100M optical interfaces.
Various ports of an EICM may be used as uplink interfaces.
1. Height of EICM: 9U.
2. Distributed L2 switching engine at a line speed.
3. Transmission delay of IP packet: <10 ms (normal traffic)
4. IP packet loss rate: <10
-7
5. IP packet error rate: <10
-6
6. Power consumption of EICM base plate: Around 18 W.
3.2.6 FEC
The FEC provides four channels of 10/100M self-adaptive Ethernet electrical
interfaces conformable to IEEE 802.3u Standards and four channels of 100M optical
interfaces. Various interfaces may be used as uplink interfaces or Ethernet user
interfaces. These interfaces may be inserted into a SCBF or Ethernet uplink base plate.
Dimensions of FEC: 100 × 162 (mm × mm). FEC parameters include:
1. FEC provides up to eight channels of 100M access, that is, the capacity is 800M.
2. Transmission delay of IP packet: <10 ms (normal traffic) Maximum frame delay:
< 10ms; minimum frame delay: < 1 ms.
3. IP packet loss rate<10
-7
4. IP packet error rate<10
-6
5. Power consumption of FEC: Around 8 W.
