1. Regional Training Seminar on GTS Techniques and Procedures
Lecture 1
Status of implementation of the GTS in Region II and requirements for an improved Regional Meteorological Telecommunication Network
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

2. Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

3. Regional Training Seminar on GTS Techniques and Procedures
Washington
Moscow
9600
9600
Novosibirsk
Khabarovsk
7200
Almaty
64 kb/s
7200 50
Bishkek
9600 75
9600
4800
9600
Tokyo
7200
9600
PyongYang
Tashkent
Offenbach
N/O
Ashgabad 75
Ulaanbaatar 75
Baghdad 75
Tehran 75
N/O
Dushanbe
Beijing 75
64 kb/s 50 50
64 kb/s
9600
N/O
Offenbach
Kabul
Seoul
9600
7200
Kuwait 50
N/O
4800
100 50
New Delhi
9600
Karachi
200
Jeddah
Bahrain
9600
9600 50
Hong Kong
1200
Doha 50 75
1200 50
N/O 75
Kathmandu
Moscow
Macao
9600 50
1200
100
Emirates
Cairo
200
Algiers
100
9600
Muscat
Hanoi
N/O
2400
100
Dhaka
Manila
200
Sanaa 50
Vientiane
Cairo
Colombo 75 75
Yangon
1200 50
200
Male
Melbourne
N/O
64 kb/s
Bangkok 50
RTH
200 75
Phnom Penh
Melbourne
NMC
N/O
1200
Point-to-point circuits
Centre in other region
Kuala Lumpur
MTN circuit
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December
Regional circuit
Interregional circuit

4. Regional Training Seminar on GTS Techniques and Procedures
2 Fax
Fax
Novosibirsk
Khabarovsk
2 Fax
GMS DCPs
2 Fax, RTT
Tokyo
VSAT
Fax, RTT
Tashkent
Fax, RTT
Tehran
Beijing
Fax, 2 RTT
2 Fax, RTT
New Delhi
Jeddah
Multipoint telecommunication systems
Fax, RTT
Bangkok
RTH
multipoint system via satellite
radio broadcast
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

5. Status of implementation
RTHs
Eight RTHs are connected to at least one MTN centre at a speed higher than 7200 bits/s
RTH Tehran is connected to RTHs Moscow and New Delhi at 50 and 75 bauds respectively
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

6. Status of implementation
NMCs
Twelve NMCs have at least one connection to the GTS at a speed higher than 1200 bits/s
Ten NMCs have at least one connection to the GTS at a speed lower than 1200 bits/s
Four NMCs have no connection to the GTS
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

7. Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

8. Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

9. Coverage by satellite systems
Region II is nearly entirely covered by the UKSF/WWW
Region II is partially covered by ICSC (Pac.), MDD, MTSAT, TV-Inform-meteo, Systems operated by China (component of the RMTN ), India and Thailand
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

10. Meteosat Data Distribution
MDD receiving systems are installed in Bahrein, Kuwait, Oman, Quatar, Turkmenistan, United Arab Emirates, Uzbekistan and Yemen
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

11. Regional Training Seminar on GTS Techniques and Procedures
Reception of WAFS
ISCS
China, Japan, Hong Kong - China, Republic of Korea, Viet Nam
SADIS
Bahrein, Bangladesh, China, Democratic People’s Republic of Korea, , Kuwait, Macao, Maldives, Mongolia, Nepal, Oman, Pakistan, Saudi Arabia, Sri Lanka, Thailand, Turkmenistan, Unites Arab Emirates, Viet Nam
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

12. Study of an improved RMTN
The Working Group on Planning/Implementation of the WWW in Region II listed deficiencies of the RMTN, agreed on a list of requirements on the RMTN and on study for an improved RMTN
The eleventh session of RA II (Ulaanbaatar, October 1996) requested to pursue the study taking into account new services, like the Managed Data communication Network services and satellite systems (e.g. VSATs)
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

13. Major deficiencies of the RMTN
A few NMCs have no connection to the GTS
Several NMCs are still depending on HF broadcasts to receive WWW data and products
Lack of flexibility in the exchange of data between non-adjacent centres
Inefficient back-up arrangements
There is no centralised management of the RMTN
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

14. Major deficiencies of the RMTN
The non-implementation of binary-oriented procedures (X.25, TCP/IP) hampers the distribution of data, in particular the distribution of new type of data
The delayed implementation of new techniques leads to maintain various techniques at the GTS centres connected to several centres
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

15. Major deficiencies of the RMTN
The implementation of the GTS could me more cost-effective
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

16. Requirements on an improved RMTN
Each NMC should have a connection to the GTS at more than 2400 bits/s using binary-oriented procedures
WWW Data should be delivered to the NMCs within the required time limits, for example no more than one hour after their release by the originator
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

17. Requirements on an improved RMTN
The RMTN should also meet the requirements of other WMO Programmes than the WWW Programme. These requirements should not exceed ten per cent of the total traffic.
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

18. Requirements on an improved RMTN
The RTMN should:
Provide transmission of both alphanumerical and binary data presented in a standard form
Have the appropriate interfaces with the MTN
Be flexible in respect of the increase of its efficiency and the the expansion of its functions
Make use of the “open” standard protocols and techniques
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

19. Requirements on an improved RMTN
The RMTN should provide reliable services:
Round-the clock operation
Transmission without errors
Back-up arrangements
Recovery arrangements (retransmission mechanisms)
Security (protection from unauthorised access, incorrect use, destruction)
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

20. Requirements on an improved RMTN
The management of the network should be improved:
In terms of the use of the telecommunication resources available through the network, in particular for the exchange of data between non-adjacent centres
As regards the exchange of information on the operational status of the centres and the circuits
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December

21. Requirements on an improved RMTN
The RMTN should be implemented and operated in a cost-effective manner.
Each centre should be able to select a set of functions depending on its financial and technical capacities
The transition to an improved RMTN should not be detrimental for any NMC, but should be implemented within defined time limits
Regional Training Seminar on GTS Techniques and Procedures
Guangzhou, December