H3C Technologies H3C SR6600-X - Manual (Page 46)

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Figure 39 Connecting a fiber cable
5. Examine the LINK LED after connection.
{
If the LED is on, the optical fiber link is present.
{
If the LED is off, no link is present. This might be because the TX and Rx port of the optical fiber
are not connected correctly. In this case, connect the optical fiber again.
Connecting an E1/T1 cable
Overview
E1 cable
You can use an 8E1 interface cable to connect to MIM-8E1(75)/MIM-8E1(75)-F modules.
Figure 40 8E1 splitter cable