IPmux-16Installation and Operation ManualChapter 3 Operation

Table 3-3. Alarms and Statistics (Cont.)

Alarm

Failure

Comments

Valid Modes

 

 

 

 

FEBE

Far End Block Error

The number of seconds in which

E1 CRC4 mode

 

 

the FEBE indication is received

 

 

 

from the remote E1 device.

 

 

 

 

 

BES

Bursty Errored Seconds (Errored

The number of seconds with

T1-ESF or

 

Second type B)

from two to 319 CRC error

E1-CRC4 modes

 

 

events with no AIS nor SEF

 

 

 

(Framing Bit Errors) error

 

 

 

detection.

 

 

 

Not applicable if Line Type is set

 

 

 

to Unframed

 

 

 

 

 

DM

Degraded Minutes

A Degraded Minute is calculated

T1-ESF or

 

 

by collecting all of the available

E1-CRC4 modes

 

 

seconds, 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.

 

ES

Errored Second: If any error

Any second containing the

 

 

occurs during one second.

following error events:

 

 

 

CRC

 

 

 

SEF (OOF)

 

 

 

AIS (T1 only).

 

 

 

If SES is also active (see below)

 

 

 

ES runs for 10 seconds and then

 

 

 

stops (T1 only).

 

 

 

 

 

Configuring IPmux-16

3-41

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RAD Data comm IPmux-16 operation manual Alarms and Statistics, Febe