Republic of Moldova

The telecommunication net of the State Hydrometeorological Service of the Republic of Moldova (SHS) is a coordinated infrastructure, providing the collection and dissemination system of hydrometeorological data, as well as other information processing technologies including data exchange.

The telecommunication net of the State Hydrometeorological Service of the Republic of Moldova (SHS) is a coordinated infrastructure, providing the collection and dissemination system of hydrometeorological data, as well as other information processing technologies including data exchange.

TC has the following telecommunication objectives:

• data transfer (using message switching),

• transformation of data transmission speed, format and message code to allow the correct exchange of data between different systems,

• database development (DB),

• integration of weather bulletins,

• data control and queries,

• to be the junction between the end users, transport network and others.

TC consists of a message switching center (MSC), the successful operation of which is achieved by a range of software and hardware systems.

Data Collection and dissemination

The following data gathering, processing and distribution system have been set up in the net of the SHS to accomplish the main tasks of data assimilation and dissemination:

1.Telegraphy for general use (TG-GU)

2. cellular telephony

3. internet technology

 Data collection via cellular telephony is achieved by use of SMS (short messaging system) messages, which are written by the observer from the weather station and then sent via a Nokia 22 GSM-modem connected to a PC serial COM port. The interpretation and display of the meteorological information is then achieved by special software produced by the Voxtel Company.

Cellular phone GSM-modem PC

In general, the system of data collection via TG-GU is originated using obsolete hand-held facilities. This is the main reason for setting in operation the telegraph modem “Alfa-Telex” to permit the prompt writing of telegrams and their self-forwarding. The “Alfa-Telex” telegraph modem is used to interface between the telegraph channel and a PC. The data transfer facilities of the “Alfa-Telex” telegraph channel are used for the exchange of information within the national AT-50 telex system. The system uses a double-wire line type communication. The “Alfa-Telex” adapter is used together with a standard IBM PC, and is connected via its serial COM port. The system has two modes of operation: manual and automatic. The receipt of information is automatic. The incoming messages are stored in the adapter memory (64KB), and can at any time be output to the PC. The installed Flash-memory (64 KB) logs all the data, together with information on its reception etc. The information is copied to the PC from Flash-memory, when full. The messages are downloaded in the adapter memory to be automatically forwarded one after another. The system of message selection according to their time of delivery, connection, control of automatic reply and sending etc. is accomplished by the adapter itself, and can operate even with the host PC switched off.

When the “Alfa-Telex” is running in manual mode and connected to a PC and printer, it operates as an ordinary telegraph.

Telegraph modem Alfa –Telex PC

The Internet system is in rapid progress, both extending the working range and allowing qualitative and quantitative services. At present, due to reliability problems with the Internet service, it is only used in a limited capacity. Therefore, only if there is no alternative, is the Internet used to collect and furnish hydrometeorological information on-line. Nevertheless, there is a positive outlook, as the world intellectuals are invited to solve these service quality problems. Despite the above, the use of the Internet is already in place, both for the collection and display of off-line information and for use by the consumer.

Data Collection and dissemination

The following data gathering, processing and distribution system have been set up in the net of the SHS to accomplish the main tasks of data assimilation and dissemination:

1.Telegraphy for general use (TG-GU)

2. cellular telephony

3. internet technology

Data collection via cellular telephony is achieved by use of SMS (short messaging system) messages, which are written by the observer from the weather station and then sent via a Nokia 22 GSM-modem connected to a PC serial COM port. The interpretation and display of the meteorological information is then achieved by special software produced by the Voxtel Company.

Cellular phone GSM-modem PC

In general, the system of data collection via TG-GU is originated using obsolete hand-held facilities. This is the main reason for setting in operation the telegraph modem “Alfa-Telex” to permit the prompt writing of telegrams and their self-forwarding. The “Alfa-Telex” telegraph modem is used to interface between the telegraph channel and a PC. The data transfer facilities of the “Alfa-Telex” telegraph channel are used for the exchange of information within the national AT-50 telex system. The system uses a double-wire line type communication. The “Alfa-Telex” adapter is used together with a standard IBM PC, and is connected via its serial COM port. The system has two modes of operation: manual and automatic. The receipt of information is automatic. The incoming messages are stored in the adapter memory (64KB), and can at any time be output to the PC. The installed Flash-memory (64 KB) logs all the data, together with information on its reception etc. The information is copied to the PC from Flash-memory, when full. The messages are downloaded in the adapter memory to be automatically forwarded one after another. The system of message selection according to their time of delivery, connection, control of automatic reply and sending etc. is accomplished by the adapter itself, and can operate even with the host PC switched off.

When the “Alfa-Telex” is running in manual mode and connected to a PC and printer, it operates as an ordinary telegraph.

Telegraph modem Alfa –Telex PC

The Internet system is in rapid progress, both extending the working range and allowing qualitative and quantitative services. At present, due to reliability problems with the Internet service, it is only used in a limited capacity. Therefore, only if there is no alternative, is the Internet used to collect and furnish hydrometeorological information on-line. Nevertheless, there is a positive outlook, as the world intellectuals are invited to solve these service quality problems. Despite the above, the use of the Internet is already in place, both for the collection and display of off-line information and for use by the consumer.