The objective with the PNM is to concentrate the alarms generated by devices located at remote sites and transmit those to the Network Operations Centre (NOC). There were two basic device categories: telecom and security devices. The initial deployment involved 700 sites and limited bandwidth (1.2 kbit/s) analogue technology to transmit signals to the centre. As a result of 8 years of non-stop development, the current system has over 2,500 sites with 90 different kinds of devices totalling 25,000. On an average day, the system processes 200,000 events, which are narrowed down to a few hundred processes requiring human intervention due to complex correlations. The solution maintains the required high quality level of the centralised configuration databases by automatically matching 300,000 parameters on a daily basis. The communication network of today enables high-speed data collection and intervention. The original objectives of the development projects have been expended to include new goals.
The following objectives have been accomplished with the development of the PNM system:
- Central management service
- Control of the quality parameters of the mobile network,
- Automation of human activities
- Security management on sites (access control, motion and temperature detection)
- Remote configuration
- Remote data collection and intervention
- OPEX reduction:
- Reduction of electric power consumption by optimising air conditioning systems
- Workflow / Workforce integration
System architecture: PNM uses a 3-layer distributed architecture where in addition to the classic business logic server and the database server, new servers appeared that control device communication, manage events, correlations and performance logs, calculate statistics and implement encrypted communication. The user side is represented by Windows clients and solutions using direct device connections on sites without network connection. The databases are Oracle based.