3wg007101 igwb hardware and principle issue 1.0

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WG007101 iGWB structure WG007101 iGWB structure and principleand principle

WG007101 iGWB structure WG007101 iGWB structure and principleand principle

1.01.01.01.0

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The CDRs generated by a switch are temporarily buffered in

its RAM that is generally known as the CDR pool. These

CDRs must be saved into physical media for CDR pool’s

capacity limit and volatile property.

What’s more, CDRs generated by the switch calls (generally

called the “Original CDRs”) can not meet the requirements of

the Billing System in terms of contents or format, thus, they

have to be pre-processed by the Charging Gateway (iGWB)



ObjectivesObjectives

Know the system structure of iGWB

Know the hardware/software configuration of iGWB

Know software structure of iGWB

Know the Billing System interface specification supported

by iGWB

Know the parameter configuration for iGWB

Upon completion of this course, you will be able to:



ReferenceReference

《 HUAWEI iGWB9812 iGWB User Manual》



Course ContentsCourse Contents

Chapter 1 overview

Chapter 2 Hardware Structure

Chapter 3 Software Structure

Chapter 4 O&M



System ApplicationSystem Application

iGWB is Huawei standard charging gateway equipment, which locates between

the switch and the Billing System and is in charge of CDR receiving, pre-proces

sing and buffering.



System CharacteristicsSystem Characteristics

MSOFTX3000: call establish and control ;provide cdr pool

iGWB Server: receive cdr from MSOFTX3000 with TCP/IP pr

otocol

Billing system: communicate with iGWB ,using FTP（ File Tra

nsfer Protocol ） or FTAM（ File Transfer、 Access & Mana

gement ） If using FTP， iGWB works as server ,billing system works as cl

ient； If using FTAM， iGWB works as Responder， billing system w

orks as initiator




High reliability

dual-plane

automatic switchover mechanism upon fault to ensure reliability of the run

ning of the system and continuity of services.

Hard disk sub-system adopting RAID mode

Software auto-startup and restart after exit

auto-startup in case of power failure




Flexible bill format conversion

provides flexible configuration and conversion of bill formats

Large capacity

bills can be buffered in the iGWB for at least seven days




Chapter 1 overview



Chapter 4 O&M



Chap2 hardware structureChap2 hardware structure

HardwareHardware configurationconfiguration

principle



Hardware configurationHardware configuration




BAU BAU

WCCU

WCCU

WCCU

WCCU

WCCU

WCCU

WSMU

WSMU

Subrack

GE

LAN SWITCH

LAN SWITCH

2 3 2 3

virtualIP

virtual IP

serial port

1 4 1 4

LAN SWITCH LAN SWITCH

OMC Billing system

heart beat

SCSI

disk arrary

Master

Standby




iGWB server: the IGWB Server communicates with MSOFTX

3000 to accomplish such operations as bill storage, format co

nversion and preprocessing.

Integrated shifter: The Keyboard/Video/Mouse (KVM) shifter

is used to implement switchover control of input/output device

s. The integrated shifter includes the input/output devices like

Liquid Crystal Display (LCD), keyboard, and mouse

LANSwitch:The LAN Switch is the communication channel b

etween the iGWB and MSOFTX3000.



Chap2 hardware structureChap2 hardware structure

Hardware configuration

principleprinciple



iGWB running environmentiGWB running environment



Working PrincipleWorking Principle

The iGWB Server provides four network adapters to communicate externally.

Local Area Connection Connected to the NMS and the bill console, functioning as t

he first heartbeat path between the active and standby iGWBs.

Local Area Connection 2 Connected to LAN Switch0, communicating wit

h the active plane of host.

Local Area Connection 3 Connected to LAN Switch1, communicating wit

h the standby plane of host.

Local Area Connection 4 Connected to the billing center, providing billing

interface.

Communicating with host



Working PrincipleWorking Principle

Communicating with billing center

Communicating with bill console and NMS

Heartbeat path

The system provides two heartbeat paths, the first of which passes through Local

Area Network (LAN, also called private network in the system) composed by

network adapters 1;

the second passes through serial port.




Chapter 1 overview



Chapter 4 O&M



iGWB software structureiGWB software structure

MSOFTX3000

Dual-system process

KERNEL process

Accesspoint

process

ClientWINDOWS

iGWB Server (WINDOWS2000)

Operationand

maintenanceprocess

MSOFTX3000

Dual-system process

KERNEL process

Accesspoint

process

ClientWINDOWS

iGWB Server (WINDOWS2000)

Operationand

maintenanceprocess



iGWB software structureiGWB software structure

For the communication among processes, the most

mature Client/Server mode is adopted, which takes one

process as the center, and the rest of the processes as

sub-processes

realizing the function that one process schedules and

monitors other service sub-processes.



System Module StructureSystem Module Structure

KERNEL process

Access point process

Operation & maintenance process

Dual-system process



Bill service processing processBill service processing process

（Network module）

(Front saving module)

Generates andtransmits bills

MSOFTX3000

FTP/FTAMBilling center

Service flow of access point process

Receives bills, and through a particular protocol ensures that bills are received without repetition or loss

Directly saves the bills received by networkmodule and forms them into original bills

(Back saving module)

(Bill processing module)

Combines and sorts bills according to therequirement, and then transmits them tothe back saving module

Saves the bills by channel, forms the billsinto final bills and submits to the billing center

（Network module）

(Front saving module)

Generates andtransmits bills

MSOFTX3000

FTP/FTAMBilling center

Service flow of access point process

Receives bills, and through a particular protocol ensures that bills are received without repetition or loss

Directly saves the bills received by networkmodule and forms them into original bills

(Back saving module)

(Bill processing module)

Combines and sorts bills according to therequirement, and then transmits them tothe back saving module

Saves the bills by channel, forms the billsinto final bills and submits to the billing center




Chapter 1 overview



Chapter 4 O&M



igwb Client Operationigwb Client Operation




The main framework function

Client Login/Exit

Office Management

Relogin

User Logout

System Lock

System Customization

Viewing

Navigation Tree Operation




Client Service Function

CDR Browsing and Querying

Status Query

Log Browsing

Operator Management

Other Operation

Debugging Function

Debugging Information Browsing

Protocol Tracing Information Browsing

Workflow Information Browsing

Opening igwb Client



CDR saving directoryCDR saving directory

/backsave|----3G |----cdr | |----20030101 | | |----b00000001.dat | | |----b00000002.dat | | |---- … … | | |----b00000060.dat | | … … | |----20030131 | | |----b00001800.dat | | |----b00001801.dat | | | … … | | |----b00001870.dat

/backsave/Second|----3G |----cdr | |----100007f_20030101000000.btf | |----100007f_20030101001500.btf | | … … | |----100007f_20030101234500.btf

Each final CDR file can be save in one or two shares. If saved in two shares,

the first share has different directory structure with the second share.



igwb Maintenanceigwb Maintenance

How to analyze the trace information

The trace files are in the directory “igwb/trace/”

If any abnormality or fault occurs to the system, these pieces of

Trace information will help us locate faults. Please note that trac

e information records the fault information and some important r

unning information during the system running, but it is not neces

sarily the system fault or abnormality. The system will also outp

ut Trace information in normal cases.




Examples:

Configuration files fail to be opened !

Please check whether the file igwb/config/ini/igwb.ini in this director

y is available.

The available space for front save is less than the minimum alar

m space !

Open the file “igwb/config/igwb.ini” and change the parameter, or de

lete some CDR files.




How to analyze the alarm information

Browsing the alarm via the alarm console

Reference to the relevant handing suggestions

Pay attention to the warn level and handle the fault in time




Examples:

Heartbeat interrupted

Alarm name Warn level Alarm type Description of alarm causes

Heartbeat

interrupted

Emergency Fault

alarm

This alarm will be generated when all

the private networks used for dual-

server heartbeat are interrupted

Handling suggestion:

Base on the alarm parameters, check whether the hardware of the network

interfaces or serial ports used for heartbeat between the dual servers is

properly connected. Besides, check whether the IP address is correctly set




How to perform the igwb Server routine maintenance

How to view the running status of a process

How to configure the IP address of a server?



SummarySummary

Hardware structure

Software structure

O&M

3wg007101 igwb hardware and principle issue 1.0

Documents

responderbilling system

system structure of

hardware structurechapter

tcpip protocolbilling

billing interface

cdr pooligwb server

software structurechapter

billing center