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CHAPTER 4 CIRCUIT CARD INFORMATION
List of Required Circuit Card
Lamp Indications
LAMP | COLOR |
| FUNCTION |
NAME |
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RUN | Green | Flashes at 120 IPM while this card is operating normally. | |
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CRC | Red | Remains lit when detecting Cyclic Redundancy Checking (CRC) | |
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| errors. |
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| |
PCM | Red | Remains lit when detecting PCM signal loss. | |
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FRM | Red | Remains lit when detecting Frame Alignment signal loss. | |
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RMT | Red | Remains lit when receiving Frame Alignment signal loss alarm | |
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| from a distant office. | |
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AIS | Red | Remains lit when a pattern of consecutive “1” is received. The | |
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| distant office transmits this signal for a | |
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BL | Red | B Channel status |
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| ON | : More than 10 channels are busy |
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| OFF | : All channels are idle |
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| Flash (60 IPM) | : Only one channel is busy |
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| Flash (120 IPM) : 2 through 10 channels are busy | |
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NEAX2000 IVS2 | Page 57 |