EMS

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The dual EMS servers work in master-slave mode. Normally, the EMS 0 is the master server, while the EMS 1 is slave one. The master server takes all the tasks while the slave one is only responsible for synchronizing its database with the master. The slave EMS server becomes to the master when the master fails. The basic status of the EMS server is described in the following table.

 

Basic Status

Descriptions

Alarm Conditions

Basic status

Overall status

Any failure

Refresh time

Time of the last refreshment

Main process stops running

Dual server mode

The dual server integration status (master or slave)

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Log information

For identification purpose only

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The EMS processes are described below:

 

Process

Definition

mysqld

Database service

httpd

HTTP (web page) service

omcMain

omcMain comprises the following modules:

beatProc: Real time receive heartbeat (status report and alarm log) from all system devices, write to the EMS database, and update to the EMS share memory to display the real time status for customer.

beatSend: Broadcast EMS's heartbeat.

iptrans

IP package transceiver

paraComm

System parameter maintenance module based on the SNMP module, used to process command, repack and send message, and process response from application servers.

subsComm

Subscriber parameter maintenance module based on the SNMP module, used to process command, repack and send message, and process response from application servers.

logCollector

Check and collect the statistics from system devices, process the original statistics into organized statistics, write to the database and update to the share memory.

omcCleaner

Regularly check network connectivity, clear database and log files.

smcli

SMCLI process, provide Subscriber Management Command Line Interface

cdrCollector

Check and collect the CDR of system devices, write to the database and update to the share memory.

subsDataBackup

Daily synchronize subscriber data with application servers.

ftpSend

Regularly transfer CDR data to customizing server and directory by FTP.

alarmAgent

Convert external alarm into internal message.

NRTRDE

Daemon process for Near Real Time Roaming Data Exchange.

sftpSend

Regularly transfer NRTRDE data to customizing server and directory by secure FTP.

 

 

 

 

 

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