
Chapter 2. Installation and Operation
LED | Condition |
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Off | No option card is installed. |
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Flashing green | Interface is available but not configured. |
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On green | Interface is available and configured. |
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On red | DTE fault condition (for HSSI interface, no clock |
| from DTE). |
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On yellow | For HSSI interface, terminal available (TA) sig- |
| nal inactive. |
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In Test
This LED is active when the DTE interface is in a loopback condition or is performing a BERT test.
TD
This LED is active when the T3SU 300 DTE port is transmitting data.
RD
This LED is active when the T3SU 300 DTE port is receiving data.
T3SU 300 User Manual |