Grentech SimpleOMC User's Manual v1.0

Shenzhen GrenTech Co., Ltd.

Simple Operation Management Center v1.0

User’s Manual

Doc No.:

Version: v1.0

Effective date:

Prepared by: Qiuxiaofeng Department/title: R&D engineer Date:

Reviewed by: Department/title: Department manager Date:

Approved by: Department/title: General engineer Date:

Copyright: Shenzhen GrenTech Co., Ltd.

The copyright of this document resides with Shenzhen GrenTech Co., Ltd. Without written permission, no part of this document may be photocopied, transmitted, or otherwise by any means in any form.

Copyright ©2006-2010 Shenzhen GrenTech Co., Ltd. All rights reserved.

In accordance with the Copyright Law of the People's Republic of China and Universal Copyright Convention,

Shenzhen GrenTech Co., Ltd. holds the copyright of this document, and reserves all rights thereof. Without

written permission from Shenzhen GrenTech Co., Ltd., no part of this document may be used, reproduced,

transmitted, or otherwise by any party in any means.

All the documents of this manual are intended solely to provide information to the users of the GrenTech

Simple Opeartion Management Center, and they are subject to changes without prior notice. Every effort

possible has been made in writing this manual to ensure its accuracy and reliability. However, GrenTech

shall not be held responsible for any possible omissions or inaccuracies or the consequences resulting from

the use of this manual.

Thank you for purchasing our products. We make our utmost to provide you with product manuals that are

easy to learn and understand to help your work. We hope that this manual proves helpful to your daily work

as it is intended and that you can achieve still greater success with our help.

You are welcome to offer comments and suggestions for our products; your inputs are invaluable for us.

Contents

1 System Overview ........................................................................................................................................ 1

1.1 System Composition.......................................................................................................................... 1

1.1.1 OMC Software ....................................................................................................................... 1

1.1.2 Communication Channel ........................................................................................................ 1

1.1.3 Repeater .................................................................................................................................. 2

1.2 System Features................................................................................................................................. 2

1.2.1 Unified Management of multiple networks ............................................................................ 2

1.2.2 Unified Dispatching of Multiple Communications ................................................................ 2

1.2.3 Unified Monitoring of Various Devices ................................................................................. 2

1.2.4 Pure Green Software Needing No Third-Party Software ....................................................... 2

1.3 System Man-Machine Interfaces ....................................................................................................... 2

1.3.1 Function Menu ....................................................................................................................... 3

1.3.2 Toolbar .................................................................................................................................... 3

1.3.3 Note Tree ................................................................................................................................ 3

1.3.4 Site list .................................................................................................................................... 4

1.3.5 Message Display ..................................................................................................................... 4

2 System Installation and Configuration ..................................................................................................... 4

2.1 System Requirement.......................................................................................................................... 4

2.1.1 Software Environment ............................................................................................................ 4

2.1.2 Hardware Environment .......................................................................................................... 4

2.2 Precautions ........................................................................................................................................ 5

2.3 Installation Procedure ........................................................................................................................ 5

3 System Structure and Functionality ......................................................................................................... 5

3.1 System Login..................................................................................................................................... 5

3.1.1 System Login .......................................................................................................................... 5

3.1.2 Changing password ................................................................................................................ 6

3.2 Area Site Management ...................................................................................................................... 6

3.2.1 Adding area site ...................................................................................................................... 6

3.2.2 Modifying area site ................................................................................................................. 7

3.2.3 Deleting area site .................................................................................................................... 7

3.3 Device management .......................................................................................................................... 8

3.3.1 Device list ............................................................................................................................... 8

3.3.2 Adding Device ........................................................................................................................ 8

3.3.3 Modifying device ................................................................................................................... 9

3.3.4 Deleting device ....................................................................................................................... 9

3.4 Remote control ................................................................................................................................ 10

3.4.1 Channel setting ..................................................................................................................... 10

3.4.2 Site Remote Sensing ............................................................................................................. 11

3.4.3 Site Remote Control ............................................................................................................. 13

3.5 Site reporting ................................................................................................................................... 16

3.5.1 Models of China Unicom ..................................................................................................... 16

3.5.2 Models of China Mobile ....................................................................................................... 16

3.6 Useful Tools .................................................................................................................................... 17

3.6.1 Packet parse .......................................................................................................................... 17

3.6.2 Repeater No. Conversion...................................................................................................... 17

3.6.3 Power conversion ................................................................................................................. 18

4 Device Patrol ............................................................................................................................................. 19

4.1 Patrol Main Console ........................................................................................................................ 19

4.2 Patrol Plan ....................................................................................................................................... 19

4.3 Select Parameters ............................................................................................................................ 20

5 Common Problems ................................................................................................................................... 22

5.1 Common Problems in Remote Sensing ........................................................................................... 22

5.2 Common Problems in Remote Control ........................................................................................... 22

6 Description of Common Alarm Parameters ........................................................................................... 23

6.1 Common Alarms ............................................................................................................................. 23

Safety Rules

This OMC should run on a computer designated for the OMC only. Not any other software should be

installed or run on the network. Do NOT run any hacker software on the network.

Do not set network services of any kind on the network such as BBS, NEWS, WWW, and FTP,

without authorization.

Do not connect the computer running the OMC to the Internet for other unrelated operations unless

absolutely necessary, as this may increase the traffic of the network card and affect the transmission

of normal NM data.

Improperly modifying the network settings, IE browser settings and machine name of the system

may cause the OMC to work abnormally. Any setup or modification of the network structure,

network service, firewall, and router, and IP address must be first approved by the related personnel.

The servers and operation terminals should be set with power-on and screensaver passwords that

meet the security requirements and should be changed at regular intervals.

Do not do anything unrelated to maintenance on the network equipment, for example, chatting

on-line, playing games, and listening to music.

Do not use any floppy disk that is not scanned for virus first or that comes from an unknown source.

Do not allow any computer without security mechanism to be connected to the network. If

absolutely necessary, it should be provided with security protection means and be authorized by the

related personnel in advance.

Do not set any “full control” sharing directory on the network. If absolutely necessary, the following

conditions should be met:

1) The full control should be for the specified users only. Everyone full control should be avoided.

2) The sharing setting should be cancelled immediately after the use.

3) The directory that needs to be shared for a long time should be set with the read-only right.

4) Any logical driver mapping to the shared directory should be cancelled.

Make available the virus-killing software and scan the computers and floppy disks that need to be

connected to the network, and scan the servers and operation clients at periodical intervals.

Back up the data at periodical intervals during daily running for possible restoration when faults occur,

for example, due to virus infection.

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Shenzhen GrenTech Co., Ltd. SimpleOMC v1.0 User‟s Manual

Doc No.: Prepared by: Wangxiaolan Reviewed by: Approved by:

Version: V1.1.0 Review date: Effective date: Page 1 of 24

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1 System Overview

The SimpleOMC is the simplified OMC developed on the basis of the China Mobile test tool at the request

of the International Marketing Division and the related personnel from the Monitoring Department and Test

Department. Compared with the integrated OMC, this simplified version offers less functions, with only the

major functions retained, for example, NE maintenance and device monitoring.

This software is easy to use and install, and does not have any problems in intellectual property rights. This

software does not use any third-party software, for example, electronic map and Sql Server database, and so

is a kind of “green software”, which is highly flexible in marketing.

1.1 System Composition

Wireless Modem

RS232

SimpleNMS

SMS

Repeater

Wireless Modem

System Structure Diagram

As the small-scale monitoring software based on the desktop database, the SimpleOMC can monitor the

units that comply with the protocols of China Mobile and China Unicom.

1.1.1 OMC Software

The OMC software consists of the main program, auxiliary tool, and database, of which the main program

operates with the sites. The operated data are stored in the database.

1.1.2 Communication Channel

All repeaters in the system can communicate with the OMC via direct cable connection, GSM or CDMA

short messages.

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1.1.3 Repeater

A set of device may consist of various devices and systems. The device in this system means all the

repeaters that are connected to the OMC.

1.2 System Features

The SimpleOMC software has the following features:

1.2.1 Unified Management of multiple networks

It applies to GSM900/EGSM1800/CDMA800.

1.2.2 Unified Dispatching of Multiple Communications

The integrated man-machine interfaces allow you to dispatch various communication methods such as

Modem and RS232 in a unified manner.

1.2.3 Unified Monitoring of Various Devices

It can monitor all the devices that are specified in the protocols of China Unicom and China Mobile.

1.2.4 Pure Green Software Needing No Third-Party Software

It can be directly installed and used without needing any database, maps, Office, Mscomm, and other

third-party software, or control software, which facilitates construction, test and marketing.

1.3 System Man-Machine Interfaces

The main interface of the SimpleOMC consists of four parts:

Main menu and system toolbar at the top

Tree on the left (area and site information)

Device information on the right (device parameters and extended parameters, on separate tabs)

Task information, communication status, log, and alarm information management at the bottom

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Main Interface

1.3.1 Function Menu

The following sections describe all the menus of the main OMC and their functions.

1.3.2 Toolbar

1.3.3 Note Tree

The node tree consists of the “NM center information”, “Area information” and “Site information”, and it

describes the areas of the repeaters and the topology of the site.

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1. The node on level 1 is the NM center node, those on level 2 are area nodes, and those on level 3 are

site nodes.

2. You can operate with the node tree by using the right-button menu.

1.3.4 Site list

The site list shows all the repeater sites in the system. The list offers all the menu items and mouse

operations for the sites on the site tree.

1.3.5 Message Display

The bottom of the main window is the message display window. This window shows the status and

information of each communication operation.

Below please find the message display window:

2 System Installation and Configuration

2.1 System Requirement

2.1.1 Software Environment

Operating system: Windows2000/XP and above

2.1.2 Hardware Environment

CPU primary frequency: above 800M

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Memory: about 128M

Other devices: motherboard with serial ports, wireless GSM/CDMA MODEM

2.2 Precautions

1. Take precaution to prevent virus!

2.3 Installation Procedure

Directly run the Setup.exe file.

3 System Structure and Functionality

The SimpleOMC implements the following functions: system login, device maintenance, device

monitoring, communication method management, multiple-protocol access, and data query.

3.1 System Login

The system provides two login modes: common login and automatic login.

3.1.1 System Login

For login, you should enter [User Name] and [Password], and click [OK] or press Enter to access the

system main interface.

The first time you use this system, log in to the system by using the default initial user name and password:

sa for User Name and 111111 for Password.

To exit login, click [Cancel] or press “Esc”.

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3.1.2 Changing password

To change the password, select [system] > [Change PassWord] or click the icon on the toolbar. The

Change Password dialog box appears:

After you enter [Original PassWord], [New PassWord] and [Confirm PassWord], click [OK] or press

“Enter” to change the password.

To cancel the change of password, click [Cancel] or press “Esc”.

3.2 Area Site Management

The appearance of site management is a node tree, which shows the areas under the NM center and the sites

in each area. The functions provided include adding, deleting and modifying areas under the NM center and

adding, deleting, and modifying sites in each area. The site tree is shown as below:

3.2.1 Adding area site

Adding Area

Right-click the [RPNMS] node on the site tree and select [Add Area] from the pop-up menu:

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This allows you to add the area-level node with the default name of [New Node I] (I=2, 3, 4….). You

can also edit the node at the same time by entering a new area name. If the area data field entered

meets the requirement, the new area information will take effect.

Note: The node name should have a length of no more than 40 characters and should be unique.

Adding Site

Right-click an area-level node on the site tree and select [Add Site] from the pop-up menu. This

allows you to add the site-level node with the default name of [New Node I] (I=2, 3, 4….). You can

also edit the node at the same time by entering a new site name. If the area data field entered meets

the requirement, the new site information will take effect.


3.2.2 Modifying area site

Right-click the node you want to modify on the node tree and select [Edit NMC]/[Edit Area]/[Edit Site]

from the pop-up menu. The node name in the node name information box becomes editable and you can

modify it to the desired name.


3.2.3 Deleting area site

Right-click the node you want to delete on the node tree and select [Delete NMC]/[Delete Area]/[Delete

Site] from the pop-up menu. The following dialog box appears.

Click [OK] to confirm.

Note:

The NM center node cannot be deleted.

If there is one or more sites in the area, the “Area has sites, can not be deleted!” message appears.

You should first delete all the sites before you can delete the area node.

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If there is one or more devices at the site, the “Site has Devices, can not be deleted!” message

appears. You should first delete all the devices before you can delete the site.

3.3 Device management

Device management allows you to operate with the basic information of the devices, for example, adding,

deleting, modifying, and querying devices and list of devices.

3.3.1 Device list

The device list shows the major information fields of the devices under the NM center, areas, or sites. The

information on this list corresponds to the information of the current node on the site tree. When you select

a node on the node tree, all the information on the device list is updated.

At the same time, you can dynamically load the information fields of the device as needed:

Right-click on the device list and check or uncheck the desired fields.

3.3.2 Adding Device

Select a site node on the node tree, right-click on it and select [Add Device] from the pop-up menu or click

[Add] on the device information box or press “ALT+A”. Then enter “Device Name, Device Address,

Reaper ID, Master or Slaver, Device Code” in the device information box, and select the required items

such as “Protocol Type” and other basic information. Click [Save] or press “ALT+S” to save the device

data. If you have entered correct data in the fields of the device, the system will show the

message. The new device information takes effect and is shown on

the device list.

To cancel the addition of the device, click [Cancel].

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Note: The [Device Name] should be unique. The [Reaper ID] is the unique ID for the repeater, within the

range of 0-31, and also must be unique. The [Device Address] is the region or area where the device is

installed, and should be filled in as accurate as possible for future data query. The [Device Code] does not

need to be entered. If the device is Master and there is no Slaver, the value will be 255, and if the device is

Master and there is a Slaver, the value will be 0. If the device is Slaver, the value will be 1~254. The

[Device State] indicates the state of the device, which may be normal, alarm, or not deployed.

3.3.3 Modifying device

Select the device to modify from the Device List and click [Modify] in the device information box or press

“ALT+M”. Now, the information in the device information box becomes editable, and you can modify the

needed fields.

Click [Save] or press “ALT+S” to save the site. If the

message appears, the device is modified successfully. If the data entered do not meet the conditions, the

system indicates that you cannot save them and ask you to enter them again.

To cancel the modification of the device, click [Cancel].

3.3.4 Deleting device

Right-click the device you want to delete on the Device List and click [Delete] in the device information

box or press “ALT+D”. The following dialog box appears.

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If you are sure to permanently delete the device and all its related history data (remote sensing, remote

control, alarm, and system log), click [OK] or press “Enter”. After the deletion is completed, the

message appears, indicating successful deletion. At the same time,

the device disappears from the device list.

To cancel the deletion, click [Cancel] or press “Esc”.

3.4 Remote control

This allows you to perform point-to-point remote sensing or control on the repeaters distributed in various

places on the OMC.

3.4.1 Channel setting

After log in, the system will automatically check whether the system channels are configured. Usually, you

need to reasonably configure the channels the first time you enter the system. During the running of the

system, if you want to change the channel settings, select [System] > [Configuration] or click the “ ”

icon on the toolbar. This brings up the channel configuration window.

The first time you log in to the system, the communication channel settings are empty, and the system will

automatically detect the available channels on the production machine of the OMC.

If [Channel Type] is set to direct cable connection (RS232), select the serial port and click [Open] or press

“ALT+O”, and finally click [OK] or press “Enter”.

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If [Channel Type] is set to Short Message Service (SMS), directly click [Open] or press “ALT+O” without

first selecting the serial port, then click [Initialize] or press “ALT+I”, and finally click [OK] or press

“Enter”.

Note:

To establish communication connection, you must have at least one functioning serial port if you

select the serial port mode.

If communication connection is not to be established, you can perform such operations as adding

sites and querying history data. In this case, click [Cancel] or press “Esc” to exit this interface, and

the system will not check the status of each channel.

3.4.2 Site Remote Sensing

This allows you to remotely query the repeater parameters and OMC parameters of the specified site device

and other parameters and statuses.

3.4.2.1 Invoking remote sensing

Right-click the device you want remote sensing on the Device List. Then, the information box at the bottom

of the window will show the basic information such as the site name, serial port, and communication port

of that device. Select the [Device Parameters] tab to access the remote sensing page.

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3.4.2.2 Remote sensing procedure

3.4.2.2.1 Models of China Unicom

Command selection: Select a remote sensing command from the [Current Query Command]

pull-down list on the [Device Parameter Query] page, for example, „Query of NM Parameter‟.

Click the [Query] button. The system starts to send the remote sensing instruction. If the repeater

returns parameters, the system will indicate accordingly and show the returned parameters on the list,

as shown in the following diagram:

The system automatically saves the returned data into the database for history query and statistics.

3.4.2.2.2 Models of China Mobile

Click [Query Parameters] to query all the parameters of the current device and click [End Query

Parameter] to end this query.

Select the parameters to query

To select all the parameters:

Select the [Select all] check box on every page.

Right-click on the parameter page and select [Select All parameters] from the pop-up menu.

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The [Selected] box before the selected parameters will be checked.

To cancel the selection of all the parameters:

Click the [Select all] checkbox or select [Cancel All parameters] from the pop-up menu.

To select a single parameter:

Click the [Select] checkbox before the parameter.

Right-click on the parameter page and select [Select Current parameter] from the pop-up menu.

To cancel the selection of a parameter:

Click the [Select] box before the parameter or right-click on the parameter and select [Cancel

Current Selection] from the pop-up menu .

Click the [Query] button. The system starts to send the remote sensing instruction. If the repeater

returns parameters, the system will indicate accordingly and show the returned parameters on the list,

as shown in the following diagram:

Notice: Please click [Query Parameters] button first to query all parameters of the repeater, and then do

any other operation.

3.4.3 Site Remote Control

This allows you to remotely set the parameters of the repeater device via the OMC for maintenance.

3.4.3.1 Invoking remote control

Right-click the device you want remote control on the Device List. Then, the information box at the bottom

of the window will show the basic information such as the site name, serial port, and communication port

of that device. Select the [Device Parameters] tab to access the remote control page.

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3.4.3.2 Remote control procedure

3.4.3.2.1 Models of China Unicom

Command selection: Select a remote control command from the [Current Set Command] pull-down

list on the [Device Parameter Set] page, for example, „Set Repeater System No‟.

Select the parameter you want to control (You can only set a command type at a time, and the

parameters you can set vary depending on the model).

After modifying the parameters, click the [Set] button, as shown in the following diagram:

The status bar on the main interface will show the setting command sending message. If the setting

command is sent successfully, the system will save your settings. Otherwise, it does not.

After the setting command is sent, it is not clear whether the setting has been successfully sent to the

remote repeater until the repeater responds. When the repeater returns the success message, it means

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that the setting is accomplished. Now, you can send a remote sensing command to see if the returned

repeater number matches your setting.

Other remote control commands can be set by performing the five steps described above.

3.4.3.2.2 Models of China Mobile

Click [Query Parameters] to query all the parameters of the current device and click [End Query

Parameter] to end this query.

Select the parameter you want to control (You can only set a command type at a time, and the

parameters you can set vary depending on the model).

Select the [Select all] check box on every page.

Right-click on the parameter page and select [Select All parameters] from the pop-up menu.

The [Selected] box before the selected parameters will be checked.

To cancel the selection of all the parameters:

Click the [Select all] checkbox or select [Cancel All parameters] from the pop-up menu.

To select a single parameter:

Click the [Select] checkbox before the parameter.

Right-click on the parameter page and select [Select Current parameter] from the pop-up menu.

To cancel the selection of a parameter:

Click the [Select] box before the parameter or right-click on the parameter and select [Cancel

Current Selection] from the pop-up menu.

Set the modification parameters

Enter the valid value in the [Set Value] box.

If you are setting alarm and switch parameters, you should right-click and select [Open All] or

[Close All] from the pop-up menu, and this will check all alarm/switch parameters.

In the end, click the [Set] button.

The status bar on the main interface will show the setting command sending message. If the setting

command is sent successfully, the system will save your settings. Otherwise, it does not.

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After the setting command is sent, it is not clear whether the setting has been successfully sent to the

remote repeater until the repeater responds. When the repeater returns the success message, it means

that the setting is accomplished. Now, you can send a remote sensing command to see if the returned

repeater number matches your setting.

Other remote control commands can be set by performing the five steps described above.

3.4.3.3 Remote Control Description

[Repeater ID]: As one of the factor for authentication in a packet, the repeater ID must be unique in

the system, and it should be assigned in a unified manner by the OMC. The repeater ID and device

ID are set by the engineers when a repeater is deployed. If the repeater ID is not properly set, remote

sensing and control of the repeater will not succeed, since the OMC needs to check the repeater ID

during this process.

3.5 Site reporting

The repeater actively sends the alarms to the OMC.

3.5.1 Models of China Unicom

Alarm reporting

The device side sends various fault alarms of the repeater device to the NM system in real time for

timely maintenance.

3.5.2 Models of China Mobile

Alarm reporting

The device side sends various fault alarms of the repeater device to the NM system in real time for

timely maintenance.

Automatic reporting

When the non-NM system sends configuration that causes the configuration parameters of the NE

device to change (affecting the change of the device monitoring parameter list), the repeater reports

the configuration changes to the NM S through its NM interface.

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3.6 Useful Tools

3.6.1 Packet parse

This allows you to parse the packets (including the China Unicom protocol packets and China Mobile

protocol packets) generated by the system.

Select the packets you want to parse in the information display section, right-click on it and select

[Parse Selected Packet] from the pop-up menu. The protocol parse interface appears.

Select [Tools] > [Package Parse] or directly click the icon on the toolbar. The protocol parse

interface appears:

Click the [Parse Packet] button or press “ALT + P” to parse the packets. For the China Mobile protocol

packets, click [Parse MAP Packet] or press “ALT + M” to further parse the packets of the MAP layer.

Click [Close] or press “ALT + C” to exit the packet parse tool.

3.6.2 Repeater No. Conversion

Select [Tools] > [Repeater No. Conversion] or directly click the icon on the toolbar. The repeater No.

conversion interface appears:

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Enter the province code in the [Province Code] pull-down list and enter the [Area Code] and [Seq. No.] and

finally click [Conversion]. The [Repeater No.] box will show the resulting repeater No. In the other way,

you can enter the repeater No and click [Revision] for a reverse conversion.

Click [Close] to exit the tool.

3.6.3 Power conversion

This allows you to perform conversion between W and dBm.

Select [Tools] > [Watt-dBm Conversion] or directly click the icon on the toolbar. The Watt-dBm

Conversion interface appears:

Enter the [Unit:dBm] and click [Conversion(dBm->W)]. The [Unit:W] box will show the converted value.

Enter the [Unit: W] and click [Conversion(W - > dBm)]. The [Unit: dBm] box will show the converted value.

You can view the conversion between special values on the right list.

Click [Close] to exit the tool.

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4 Device Patrol

4.1 Patrol Main Console

This allows you to run a Patrol.

Select [Patrol] > [Patrol Main Console]. The Patrol Operation interface appears:

The Selected Devices is in the list. Click the [Start] button can start a patrol of these devices. Click [Stop]

can close the current patrol. Click [Open Report] can choose the patrol report you want to see.

Click the [Modify] button can open the interface of Patrol Plan, you can modify patrol tactics there.

4.2 Patrol Plan

This allows you to make the patrol tactics.

Select [Patrol] > [Patrol Plan]. The Patrol Plan interface appears:

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You can choose the options of the patrol in this interface:

Automatically or Manually

Begin Time

Report Path

Devices to patrol: you can choose All Devices or Alarm Devices, or you can choose the devices in the

bottom list.

Click the [Confirm] button to save the patrol plan. Click [close] to quit the window.

4.3 Select Parameters

This allows you to select the performance parameters you want to patrol.

Select [Patrol] > [Select Parameters]. The Select Patrol Parameters interface appears:

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You can select the check box in front of the parameters to choose the parameters you want to patrol.

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5 Common Problems

5.1 Common Problems in Remote Sensing

1. During remote sensing, the status bar shows “Incorrect repeater No.”.

Reason: The repeater No of the site in the database does not matches that on the device side. You can

modify the repeater No in the system to match that of the device in the “Site Management”. When

the actual number of the site is unknown, you can consult the original data provided by various

manufacturers for check or directly inquire the related manufacturers.

2. During remote sensing, the status bar shows “5: Repeater No, 0: Device No; The device is not

found!”.

Reason: The device No of the site in the database does not matches that in the repeater. You can

modify the device No to match that of the device in the “Site Management”.

3. During remote sensing, the status bar shows “Other errors”.

Reason: This is the response of the repeater to the OMC command. The reason should be that an

operation command is not supported by the repeat of this type or the device type is not added in the

system.

5.2 Common Problems in Remote Control

The setting fails during the remote control of a site.

You are recommended to first perform remote sensing before you perform remote control. Perform remote

control only after remote sensing normally returns results. If remote sensing is successful but remote

control fails, the reasons may be:

1) The monitored version of the repeater does not match that at the OMC, so the remote control

instruction from the NM center is not correctly parsed.

2) The monitoring unit of the repeater fails, for example, damaged storage chip, so that the parameters

that are to be modified by the OMC remote control instruction cannot be stored.

3) The monitoring units of some devices are not designed to support the modification of the parameter.

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6 Description of Common Alarm Parameters

Below please find the alarms of the common GrenTech repeater models. The alarm parameters of other

manufacturers are currently unknown since they are not described in the protocols provided. However, you

can understand them according to the following descriptions. For how to handle the alarms, you can also

directly inquire the appropriate manufactures.

6.1 Common Alarms

Power failure alarm: When the repeaters have abnormal power supply due to a power outage or

other reasons, the monitoring module will send the “power failure alarm” to the OMC by using the

backup battery. For GreTech power modules, the normal input voltage range is 180~260V, and the

normal output voltage range is 7~11V. Alarms will occur beyond this range.

Power module status alarm: This is reserved for the solar energy battery, and currently our devices

do not support this interface.

Self-excitation alarm: The device experiences self-excitation and fails to work normally. This will

affect the device and the wireless network and may even interfere with the BTS in the worst case.

When self-excitation occurs, the GrenTech devices will automatically shut down the power amplifier

and report an alarm. When the OMC receives the alarm, and the self-excitation temporarily clears

since the power amplifier is turned off. Self-excitation that occurs after it is put into service may be

due to the following reasons: 1) The location of the antenna is deviated and this reduces the isolation,

which needs on-site check; 2) The host BTS or the surrounding radio environment changes, in which

case the device parameters need to be adjusted accordingly; 3) The gain and attenuation of the

device are not set properly, in which case you can query the history records in the OMC and modify

accordingly.

Door control alarm: The chassis of the device is opened; the door of the chassis is not closed

properly after site upgrade or debug, or the door is closed properly but the door control switch is

damaged. All these could cause such alarm.

Failure of the uplink low-noise amplifier: The device fails to work normally, the uplink signals are

affected, and the calls may be not available in the coverage area. On-site handling is required.

Failure of the downlink low-noise amplifier: The device fails to work normally, the downlink

signals are affected, and the calls may be not available in the coverage area. On-site handling is

required.

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Overpower of the uplink power amplifier: The output power of the uplink power amplifier is

above the set threshold and this may cause interference to the BTS. You can increase the attenuation

of the uplink power amplifier to adjust the uplink output power by remote control on the OMC.

Overpower of the downlink power amplifier: The output power of the downlink power amplifier

is above the set threshold and this may affect the coverage area of the repeater. You can increase the

attenuation of the downlink power amplifier to adjust the downlink output power by remote control

on the OMC.

Over-temperature of the uplink power amplifier: The temperature of the uplink power amplifier

is too high (the threshold for GrenTech device is 70 ºC), and this may cause the power amplifier

module to work abnormally.

Over-temperature of the downlink power amplifier: The temperature of the downlink power

amplifier is too high (the threshold for GrenTech device is 70 ºC), and this may cause the power

amplifier module to work abnormally.

SWR alarm of the uplink power amplifier: The RF signals of the uplink power amplifier of the

repeater are not effectively outputted via the antenna, and calls cannot be connected normally in the

coverage area. The possible reason is that the antenna feeder connector is in loose contact or flooded.

SWR alarm of the downlink power amplifier: The RF signals of the downlink power amplifier of

the repeater are not effectively outputted via the antenna, and the signals are weak in the coverage

area.

Rx/Tx signal alarm: This is mainly for the front/back-end communication of the divided devices,

for example, abnormal communication of the monitoring signals between the input end of the fiber

repeater and the coverage end, abnormal communication of the monitoring signals between the

indoor coverage unit and the trunk amplifier. Such alarms cause the failure of the back-end devices

to be monitored on the OMC. Possible causes: 1) The front-back-end monitoring data cable fails or

the connector gets loose or the optical path attenuation is so large that causes high BER; 2) The front

and back-end programs do not have the same version or the DIP switches are not set correctly on one end.

Grentech SimpleOMC User's Manual v1.0

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