Ericsson Radio Systems AB PKRC1311004-1 Manual De Usuario

Operation and Maintenance Support

sub-RU does not normally have a
processor. It should be observed that a
RU with a processor that is not loadable is
classified as a sub-RU.

TDMRU

Transceiver DMRU. A TDMRU is a
DMRU that handles transceiver
functionality.

38.3

Buttons

Purpose

To be able to reset, to start test operation function and to change
between local and remote mode.

Preconditions

For the CPU Reset-button and the Test-button there are no precondition
requirements. For the Local/Remote-button, see Section 38.4 Change
RU to Local Mode on page 285 and Section 38.5 Change RU to
Remote Mode on page 286. The functions are initiated when the
buttons are pushed.

Description

CPU Reset:

A CPU Reset button can be found on the CMRU, TDMRU and
EDMRU (DXU, TRU and ECU). When the CPU Reset button is
pushed the unit itself and all its sub units will be reset.

Local/Remote:

A Local/Remote button can be found on the CMRU and TDMRU
(DXU and TRU). The Local/Remote button is used to change RU mode
to Local or Remote. For further description of the Local/Remote button,
see Section 38.4 Change RU to Local Mode on page 285and Section
38.5 Change RU to Remote Mode on page 286.

Test:

Test buttons can be found on the TDMRU (TRU). The Test function is
not used.

38.4

Change RU to Local Mode

Purpose

To change from Remote Mode to Local Mode which means to release
and stop the layer 2 communication links on Abis interface and to
disable MO TX and MO TS if they were enabled.

Preconditions and Initiation

The RU operational state should be IRO, RFU and IU. The RU Mode
should be Remote. The function is initiated when the Local/Remote
button on RU is pushed.

EN/LZT 720 0008

R1A

2001-06-26

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