|
| Using HDLC.FRAME Protocol |
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| Status and Error Messages |
| E1/T1 interface |
|
| The following transmit completion status codes may be generated by the | |
| HDLC.FRAME protocol on an E1/T1 interface. | |
Table | E1/T1 Interface Transmit Completion Status Codes | |
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|
|
| Transmit | Description |
| Status Code |
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|
|
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| IO_OK | No error detected. |
|
| This message was successfully transmitted to the |
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| receiving station. |
|
|
|
| IO_DSBL | Terminal disabled. |
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| Messages cannot be transmitted by a disabled terminal. |
|
|
|
| IO_DOWN | Terminal down. |
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| This message could not be sent because the physical |
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| interface is not operational (usually when frame |
|
| synchronization has been lost). |
|
|
|
| IO_LONG_MSG | There is a limit to the number of buffers which may be |
|
| used for a single transmit frame. If this limit is exceeded, |
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| the frame is flushed with this status code, and is not |
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| transmitted. Note: This ACC has a configurable buffer |
|
| size and a buffer size of 128 bytes or larger will prevent |
|
| this problem from occurring. |
|
|
|
| IO_TX_URUN | Transmit underrun. |
|
| This frame could not be transmitted at this time due to |
|
| excessive loading of the interface card. |
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Chapter 3 | 27 |