Verilink Access Manager 2000 (896-502037-001) Product Manua Manual do Utilizador descarregar pdf (Página 290)

100

101

Monitoring and Troubleshooting Access Manager

8-20

Access Manager 2000 User Manual

6. After viewing the current status, press to return to the On-line

Access Menu.

Reviewing CSU status

Except for Low Densit , the CSU monitors the status conditions for both

the NET and EQPT (i.e, data equipment) sides. Loopbacks apply to one

side only. The status items are as follows:

Field Value Meaning

Loss of Signal

See AT&T Reference 62411.

Loss of Frame

See AT&T Reference 54016.

Out of Frame

Although this condition, as defined in AT&T

Reference 54016, might not last long enough

to be visible to the operator, the CSU keeps

the

YES indication alive for up to 1 second

after the condition clears, to make it visible.

AIS (Alarm

Indication

Signal)

See ANSI T1.403.

CRC Error

See

Out of Frame

above. The CRC-6 error

indication is also kept alive for 1 second.

Low Density

The circuit element is stuffing ONEs into the

signal it has been configured to do when

receiving a low density signal. This only

applies to the EQPT side.

Active ELB, LLB,

RLB, PLB

No None of these loopbacks are in progress.

These loopbacks are activated and

deactivated by commands sent over the ESF

Data Link.

BPV Error

See

Out of Frame

above. The BPV error

indication is also kept alive for 1 second.

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