The communication networks consists of three Global telecommunication systems  namely:
(1)   The Main Telecommunication Network (MTN)
(2)   The Regional Meteorological Telecommunication Networks (RMTNs)
(3)   The National Meteorological Telecommunication Networks (NMTNs)

MAIN TELECOMMUNICATION NETWORK
The Main Telecommunication Network is the core network of the GTS. It links together three World Meteorological Centres and 15 Regional Telecommunication Hubs. It has the function of providing an efficient and reliable communication service between its centres, in order to ensure the rapid and reliable global and interregional exchange of observational data, processed information and other data required by Members.
MAIN TELECOMMUNICATION NETWORK

REGIONAL COMMUNICATION HUB
The Regional Meteorological Telecommunication Networks consist of an integrated network of circuits interconnecting meteorological centres, which are complemented by radio broadcasts where necessary. The Regional Meteorological Telecommunication Networks are to ensure the collection of observational data and the regional selective distribution of meteorological and other related information to Members. The RTHs on the MTN perform an interface function between the Regional Meteorological Telecommunication Networks and the MTN. The diagram below shows the configuration of the networks in region I ( Africa ).
REGIONAL COMMUNICATION NETWORK

NATIONAL COMMUNICATION NETWORK
The National Meteorological Telecommunication Networks enable the National Meteorological Centres to collect observational data and to receive and distribute meteorological information on a national level as shown by national meteorological telecommunication circuits in kenya.
NATIONAL COMMUNICATION NETWORK