Network Trunk Module
Figure 4-25 BC-SR Faceplate
RS 449/MIL188
X.21
V.35
LOS (red)
Bad Clk (red)
Yellow alarm (yellow)
DSR (green)
DTR (green)
RXD (green)
TXD (green)
Fail (red)
Active (green)
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Table |
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Connection/Indicator | Function | |||
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X.21 data connector | ||||
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V.35 data connector | ||||
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LOS light (red) |
| Loss of signal at the local end | ||
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Bad CLK light (red) | Loss of clock or clock out of range | |||
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Yellow alarm light (yellow) | Loss of packet alignment (NTM) or frame alignment at remote end | |||
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DSR light (green) |
| The DSR lead is high (ON) | ||
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DTR light (green) |
| The DTR lead is high (ON) | ||
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RXD light (green) |
| The receive data line shows activity | ||
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TXD light (green) |
| The transmit data line shows activity | ||
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Fail light (red) |
| An error occurred. First, reset the card with resetcd f. If the LED comes on | ||
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| again, contact the Cisco TAC through Customer Engineering |
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Active: light (green) | The card is in service and has active circuits | |||
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Trunk Cards