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Transport network O&M functions-DXX Support

Both CSU line loop back and CSU payload loop back have higher

priority than the DXX line loop. This means that the DXX loop will be

suspended when CSU loops (PLB or LLB) is activated. When CSU

loop is deactivated, the DXX loop is resumed again.

57.4.11 DXX Node inventory

This function is initiated during restart of the DXU if the parameter

TNOM_use in RBS DB is already set to ON, otherwise the function is

initiated when the parameter is set to ON.

This function maintain the RBS node inventory and settings of the

transmission interface parameters. The parameters controlled from BSS

cannot be modiﬁed from DXX.

It is from DXX possible to make a node inventory in order to view the

HW and SW status of the DXU, as well as the interface parameter

settings.

Node inventory

Hardware types and software types and versions (revisions) can be

retrieved by request from DXX.

The SW type and version is the type and version for the speciﬁc DXX

support software (not for the RBS software).

The HW type inventory include RBS-E1 and RBS-T1.

Transmission interface parameter settings

It is also possible from DXX to get the parameter settings for the

transmission interface in the RBS.

The parameter settings that can be fetched are:

•

Status of TS0 Sa bits “1” or “0”.

• CRC4 ON or OFF.

•

TN O&M timeslot allocation.

•

Type of interface selected. The interface options are: E1 long-

haul, E1 short-haul, T1 long-haul, T1 short-haul, and E1 external

HDSL modem.

• Alarm fault ﬁlter parameters (see Section 57.4.9 on page 456).

• Performance limit parameters (see Section 57.4.8 on page 453).

57.4.12 Administration of TNOM generic functions

The TNOM generic functions are administrated from the OMT by use

of the parameters TNOM_use, TNOM_timeslot and TNOM_nodeid.

Application Parameters

TNOM allocationThe parameter used for the Transport Network O&M

Timeslot allocation is: TNOM_use

The valid range of the parameter is:ON (Auto)OFF

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EN/LZT 720 0008 P2A

2001-11-28

Preliminary