Loop Control; Rf Loop Test Supervision - Ericsson RBS 2106 Reference Manual

Operation and Maintenance Support
Local/Remote button is disabled. When RU mode is changed to local
for the slave RU, a TX diversity fault is raised on the master AO TX. A
FAULT_REPORT message is sent to BSC on Abis interface. RU mode
is changed to local and Abis communication with BSC via the master
RU is stopped. When Local Mode has been entered, the slave MO TX
is disabled if it was enabled, and the TX NOT ENABLED indicator is
turned on. After this, the Local Mode indicator is turned on, the
Operational indicator is handled (see Section 44.15 Operational
Indicator on page 354), and the Local/Remote button is enabled.
The following will occur when the function terminates:
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•
•
•
44.8

Loop Control

Purpose
To test the transmission network by looping all traffic back to the BSC.
Preconditions and Initiation
The MO state should be Disabled and the RU Mode Remote. The Loop
Control is initiated by the Loop Control command on the Abis interface.
Description
The Loop Control procedure is a part of the automatic loop test of
speech/data links. The Loop Test can be opened or closed on command
from the BSC. When the test loop is closed all traffic is looped back to
the BSC in order to test the transmission network. The test loop is
controlled by MO TS. The Loop Control is terminated when Loop
Control Complete is sent on the Abis interface.
44.9

RF Loop Test Supervision

Purpose
To test the radio equipment during traffic.
Preconditions and Initiation
The RU Mode should be Local or Remote. The RF Loop test
Supervision is initiated when the application SW is started.
Description
The radio equipment is tested during traffic by a radio loop test
function. The test procedure is described by the Supervision and
Selftest functionality.
350 (485)
The Local Mode indicator is turned on.
The Operational indicator indicates RU operational mode
according to description.
The TX NOT ENABLED indicator is turned on.
RU operational state = ILO.
© Ericsson Radio Systems AB
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EN/LZT 720 0008 P2A
2001-11-28