Monitoring the DSU
Health and Status
The following messages appear in the first column of the System and Test Status screen. The highest priority Health and Status message also appears on all ATI screens on the bottom right.
Table
Message | What Message Indicates | What To Do |
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Cross Pair Detection
The DDS Receive (RX) and Transmit (TX) pairs are crossed on the network interface. Alarm LED is on.
Reverse the RX and TX pair at the punchdown block or other termination point.
No Signal | No signal is being received. | 1. | Verify that the network cable is |
hhh:mm:ss 1 | Local DSU network problem. |
| securely attached at both ends. |
| The Alarm and NS LEDs are | 2. | Contact network provider. |
| on and Network Performance | ||
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| |
| Statistics are active. |
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Out of Service | DSU is receiving out of | 1. | Verify that the remote site is in |
hhh:mm:ss 1 | service code from the |
| service. |
| network for the remote unit. | 2. | Contact network provider. |
| The Alarm and OOS LEDs | ||
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| |
| are on and Network |
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| Performance Statistics are |
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| active. |
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Out of Frame | DSU is detecting an out of | 1. | Verify that the line rate matches |
hhh:mm:ss 1 | frame condition, associated |
| the configured rate. |
| with: | 2. | Contact network provider. |
| H Receiving out of frame | ||
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| code from the network. |
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| H DSU detecting out of frame |
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| errors with 64 kbps CC |
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| data rate. |
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| H DSU unable to synchronize |
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| local receiver circuit with |
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| line signal. |
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Excessive BPVs | Data rates do not match or | 1. | Verify that the network cable is |
hhh:mm:ss 1 | network trouble is causing |
| securely attached at both ends. |
| bipolar violations. Alarm LED | 2. | Contact network provider if |
| is on and Network | ||
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| problem persists. | |
| Performance Statistics are |
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| active. |
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User Data Port | The DTE is not ready to | Check on the DTE status. Verify | |
DTR Off | transmit or receive data. This | that the DTE is powered up and | |
| message will not appear | asserting DTR. | |
| unless Monitor DTR is |
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| enabled. |
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1hhh:mm:ss indicates the amount of time the condition has existed in hours, minutes, and seconds. When the maximum time has been exceeded, 255:59:59+ appears.
November 1997 |
