H3C MSR Router Comware 5 Series, Manual

Page: 52 / 219

43
When you connect the SIC-EPON to an OLT, a passive optical splitter (POS) is needed. You need to
connect the inbound fiber of the POS to an OLT port, and connect the outbound fibers to ONUs,
namely, the SIC-EPON interfaces; therefore, a tree topology can be formed from the OLT port to the
ONU ports.
CAUTION:
When connecting a SIC-EPON interface to an OLT, use a POS. For the connection diagram,
see
Figure 45 .
Interface LEDs
Figure 44 SIC-EPON panel
Table 59 LED description
LED Description
LINK
•
On: An ONU, the SIC-EPON has been physically connected to the OLT.
•
Off: The SIC-EPON has been disconnected to the OLT or no physical
connection is established.
ACT
•
Off: No data is being transmitted or received.
•
On: Data is being transmitted or received.
Interface cable
The SIC_EPON can be connected to a POS through a single-mode fiber, and the connected to an
upper layer POS or OLT. The structure of a POS is as shown in the following figure:
Figure 45 POS structure
For the connection of a POS, see Connecting the Interface Cable on page 43 .
Connecting the Interface Cable
The SIC-EPON provides an SC optical interface, which can be directly connected to the POS. The
single optical interface on the POS is the upstream direction of the data, and is connected to an
upper level POS or OLT; the multiple optical interfaces on the POS are connected to lower level
POSs or ONUs.