Verilink WANsuite 5650 (34-00314.E) Product Manual Manual de usuario descargar pdf (Pagina 41)

VT100 Interface 3-19

CRC4 Mode

Used to disable or enable CRC-4 detection/generation towards the SHDSL

network. When less than 32 timeslots are configured on the G.703 port, CRC-

4 detection/generation is based on filling the unused timeslots with a fixed

pattern configurable via the management interface. This CRC-4 detection/

generation is also required for multirate (single or simultaneous services)

where less than 31 G.704 timeslots are carried over the SHDSL line.

Values:

Disable, Enable

Default:

Disable

Frame Type

Sets the type of framing used by the G.703 port.

Values:

Framed, Unframed

Default:

Framed

E Bit Generation

In framed mode,this is used to configure the CRC-4 detection/generation via

the management interface.

Values:

Disable, Enable

Default:

Disable

RAI Generation

The RAI (Remote Alarm Indication) detection shall be in accordance with

ITU-T I.431 sec 3.4.1.2 and ITU-T G.704 Table 5A.

Values:

Disable, Enable

Default:

Enable

Sa4, Sa5, Sa6, Sa7, Sa8

Displays the status of special spare bits found in Timeslot 0.

Error Status and Alarm Thresholds Table

The unit can be programmed to generate an alarm condition based on a

specific level of performance degradation. The G.703 screen presents a table

that provides current error status and alarm threshold information.

Acceptable alarm thresholds are set for periods of 15 minutes (900 seconds).

The error types listed in the following paragraphs can be preset to a value

between 0 and 900 seconds. Setting a threshold field to “0” (zero) disables the

alarm on that statistic. To effectively disable alarm reporting, set all thresholds

to “0” (zero).

The 15-minute time frame is a time window based on the accumulated counts

over the previous 15 one-minute intervals. In all cases, if the number of actual

network errored seconds in the previous 15 minutes reaches the preset

threshold for the specified error type, an alarm condition is declared.

The four columns of the status table are as follows:

•

Status

: Displays the current status of the network port.

•

Alarm

: Displays the alarm value of the network port. The unit declares an

alarm as soon as the count exceeds the threshold set.

•

Count

: Displays the number of events or occurrences of this statistic that

have been detected.

•

Threshold

: Displays a read/write field that can be set to a desirable

threshold.

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Verilink WANsuite 5650 (34-00314.E) Product Manual Manual de usuario Pagina 41

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