SDH Thresholds (STM-N Cards)


Use the SDH Thresholds tab to provision the multiplex section (MS), regenerator section (RS), and path STM-N card thresholds. The thresholds shown depend on the direction (near or far end) and types (line, section, path) that you choose. (Thresholds are not displayed until a circuit is created.) The STM1E-12 card does not display all of the fields listed in the table on the Provisioning > SDH Thresholds tab.

Port

The port number.

EB

(MS, RS, Path.) Errored block indicates that one or more bits are in error within a block.

ES

(MS, RS, Path.) The number of errored seconds. An errored second is a one-second period with one or more coding violations at that layer or one or more incoming defects at that layer.

SES

(MS, RS, Path.) The number of severely errored seconds. A severely errored second is a one-second period with x or more coding violations at that layer one or more incoming defects at that layer. The value of x depends on the line rate and bit error rate.

BBE

(MS, RS Path.) Background block error is an errored block not occurring as part of an SES.

UAS

(MS, Path.) Displays the unavailable seconds.

BEC

(STM1E-12 cards only.) (MS, RS, Path.) Displays basic error correction.

PSC

(MS.) Displays the protection switching count.

PSD

(MS.) Displays the protection switching duration.

PSC-W

(MS.) Displays the working protection switching count.

PSD-W

(MS.) Displays the working protection switching duration.

PSC-S

(MS.) In a four-fiber MS-SPRing, protection switching count-span is a count of the number of times service switches from a working line to a protection line plus the number of times it switches back to the working line. A count is only incremented if span switching is used.

PSD-S

(MS.) In a four-fiber MS-SPRing, protection switching duration-span is a count of the seconds that the protection line was used to carry service. A count is only incremented if span switching is used.

PSC-R

(MS.) In a four-fiber MS-SPRing, protection switching count-ring is a count of the number of times service switches from a working line to a protection line plus the number of times it switches back to a working line. A count is only incremented if ring switching is used.

PSD-R

(MS.) In a four-fiber MS-SPRing, protection switching duration-ring is a count of the seconds that the protection line was used to carry service. A count is only incremented if ring switching is used.

PPJC-PDET

(Path.) Displays the positive pointer justification count, path detected.

NPJC-PDET

(Path.) Displays the negative pointer justification count, path detected.

PPJC-PGEN

(Path.) Displays the positive pointer justification count, path generated.

NPJC-PGEN

(Path.) Displays the negative pointer justification count, path generated.

PJCDIFF

(Path.) Pointer Justification Count Difference is the absolute value of the difference between the total number of detected pointer justification counts and the total number of generated pointer justification counts. That is, PJCDiff is equal to (PPJC-PGen - NPJC-PGen) - (PPJC-PDet - NPJC-PDet).

PJCS-PDET

(Path.) Pointer justification count seconds, is a count of the one-second intervals containing one or more PPJC-PDet or NPJC-PDet.

PJCS-PGEN

(Path.) Pointer justification count seconds is a count of the one-second intervals containing one or more PPJC-PGen or NPJC-PGen.

Directions

Select Near End or Far End for the PM direction.

Intervals

Select 15 Min or 1 Day for the PM interval.

Types

Select multiplex section, regeneration section, or path, where applicable.

Refresh

Refreshes the tab fields.

Apply

Applies changes made to the fields in the tab.

Reset

Cancels any changes to the tab and returns the fields to their last-saved settings.

Help

Displays context-sensitive help.