Operation and Maintenance | MultiVOIP User Guide | |||
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| E1 Statistics: Field Definitions (cont’d) |
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| Field | Values | Description |
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| Receive |
| The framing pattern '0000' in 2 |
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| Timeslot 16 |
| consecutive CAS multiframes were not |
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| Loss of |
| found or in all time slot 16 of the previous |
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| MultiFrame |
| multiframe all bits were reset. |
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| Alignment |
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| Transmit |
| At least 32 consecutive zeroes were |
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| Line Open |
| transmitted. |
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| Transmit |
| For use by MTS Technical Support |
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| Data |
| Personnel. |
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| Underrun |
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| Transmit |
| The frequency of the transmit clock is |
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| Slip |
| greater than the frequency of the transmit |
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| Negative |
| system interface working clock. A frame |
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| is skipped. |
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| Bipolar | Integer tally of | Bipolar Violation (or BPV) refers to two |
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| Violation | violation count | successive pulses of the same polarity on |
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| since last reset. | the E1 line. On an |
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| represents a line error. On a B8ZS line, |
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| this may represent the substitution for a |
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| string of 8 zeroes. |
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| Excessive | Tally since last | Displayed value will increment if |
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| Zeroes | reset. | consecutive zeroes beyond a set threshold |
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| are detected. I.e., tally increments if more |
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| than 7 consecutive zeroes in the received |
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| data stream are detected under B8ZS line |
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| coding, or if 15 consecutive zeroes are |
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| detected under AMI line coding. |
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| Transmit | Tally since last | Slip in transmitted data stream. Slips |
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| Slip | reset. | indicate a clocking mismatch (or lack of |
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| synchronization) between T1/E1 devices. |
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| When slips occur, data may be lost or |
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| repeated. |
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| Receive Slip | Tally since last | Slip in received data stream. Slips indicate a |
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| reset. | clocking mismatch (or lack of synchronization) |
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| between T1/E1 devices. When slips occur, data |
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| may be lost or repeated. |
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