Specifications

Conguring Backhaul Chapter 5: Lea v e the Site

Conguring Backhaul

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Before disconnecting the LMF and test equipment, the span backhaul must be conﬁgured to

allow the UBS to communicate with the OMC -R.

Introduction

General

This section allows the Cellular Field Engineers (CFEs) to pre -conﬁgure the UBS backhaul

parameters prior to cutting over the UBS . It also contains information on how to make

adjustments to individual backhaul parameters.

Conguring the UBS Backhaul

Prior to BTS cutover , some span conﬁguration and connection parameters must be set to match

the type of backhaul chosen for the particular BTS . These parameters can be checked and

changed if required using the LMF Conﬁgure Backhaul Basic Screen. W ith these values set

correctly , the OMC -R should be able to establish communications with the BTS . In the event

that communication between the OMC -R and the BTS is lost and cannot be re -established, the

LMF Conﬁgure Backhaul Advanced Screen can be used to restore the backhaul conﬁguration

to default values. See Figure 5 -1 .

The default mode is Full Conﬁguration Backhaul unless the Fractional Span box is

checked.

Backhaul Conguration Procedure

Prior to executing Procedure 5 -1 , the information determined and gathered while working

through the System Engineering Section of the UBS Set -up Procedure should be available. This

information documents the intended backhaul conﬁguration for the site and should match the

conﬁguration the OMC -R is expecting to use for the UBS .

F ailure to congure the UBS backhaul correctly with the LMF using the same DS0

congur ation ma y result in the OMC -R being unable to establish communication with

the UBS at cuto v er .

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FOA A UG 2007