IPmux-1/1EInstallation and Operation ManualAppendix E Parameters and Screens

 

 

 

Table E-21. E1/T1 Statistics (Cont.)

 

 

 

 

 

Alarm

Failure

Comments

 

 

 

 

 

DM

Degraded

A Degraded Minute is calculated by collecting all of the available seconds,

 

 

Minutes

subtracting any SESs and sorting the result in 60 second groups.

 

 

 

A Degraded Minute is a 60 second group in which the cumulative errors

 

 

 

during the 60-second interval exceed 1x10-6.

 

 

 

T1-ESF or E1-CRC4 modes

 

 

 

 

 

ES

Errored

For E1/T1: Any second containing the following error events:

 

 

Second (If any

CRC

 

 

error occurs

 

 

 

 

 

during one

SEF (OOF)

 

 

second)

AIS (T1 only).

 

 

 

 

 

 

If SES is also active (see below) ES runs for 10 seconds and then stops.

 

 

 

 

 

SES

Severely

Any second containing the following errored events is counted as severely

 

 

Errored

errored seconds:

 

 

Seconds

For E1/T1:

 

 

 

 

 

 

If 320 or more CRC error events

 

 

 

One or more SEF (OOF) events

 

 

 

One or more AIS events occurred (for T1 only).

 

 

 

 

 

UAS

Unavailable

Activated when there are 10 consecutive SES occurrences and

 

 

Seconds

Deactivated as a result of 10 consecutive seconds without SES.

 

 

 

 

 

 

 

 

LOMF

Loss of

Loss Of Framing sequence in Timeslot 16.

 

 

Framing

E1 CAS mode only

 

 

 

 

 

 

The following parameters can be monitored from the Link Status menu:

Valid Intervals – number of 15-minute intervals stored in the system since power- up.

Time Since – elapsed time since the beginning of the current interval (interval 0). This is displayed only when the current interval is monitored.

Interval Number – number of the interval to be displayed. Interval number 0 (zero) is the current interval.

The current interval display is continuously updated.

The elapsed time since the beginning of the interval is displayed.

Start Time – time and date when the monitored interval started. This is displayed only when viewing previous intervals.

Prev – displays the previous interval. From the first interval (current interval = 0) Prev is not visible.

Next – displays the next interval.

The number of valid intervals is displayed. From the last valid interval Next is not visible.

Performance Monitoring

E-31

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RAD Data comm IPmux-1E operation manual Table E-21. E1/T1 Statistics, Ses

IPmux-1E, IPmux-1 specifications

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