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About This Manual
Purpose
This manual provides information about the routine maintenance methods for the ZXMW
NR8120A/8120D Digital Microwave Transmission System. The routine maintenance items
and methods are described in accordance with the maintenance period, including day,
month, and quarter. The troubleshooting flow, common fault analysis, and fault locating
method are also provided for reference in this manual.
Intended Audience
This manual is intended for maintenance engineers who work with the ZXMW
NR8120A/8120D.
What Is in This Manual
This manual contains the following chapters and appendix.
Chapter 1, Routine Maintenance
Chapter 2, Troubleshooting
Chapter 3, Fault Locating
Methods
Chapter 4, Indicators
Conventions
This manual uses the following typographical conventions:
Italics
Bold
Constant width
[ ]
{ }
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SJ-20150804150350-006|2015-09-17 (R1.0)
Describes the daily maintenance, monthly maintenance, and
quarterly maintenance for the ZXMW NR8120A/8120D.
Describes the common fault analysis, including application fault,
radio link fault, TDM service fault, Ethernet service fault, and
network management fault.
Describes the common fault locating method including loopback
test, Ethernet OAM test, and MSTP single-step operation.
Describes the indicators of the ZXMW NR8120A/8120D system.
Variables in commands. It may also refer to other related manuals and
documents.
Menus, menu options, function names, input fields, option button names,
check boxes, drop-down lists, dialog box names, window names, parameters,
and commands.
Text that you type, program codes, filenames, directory names, and function
names.
Optional parameters.
Mandatory parameters.
Separates individual parameters in a series of parameters.
I
ZTE Proprietary and Confidential
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