The Idea of Global Internet.
                     The Idea of Global Internet
What is Global Internet
• A global network is any communication network which spans the entire Earth. The term, as 
used in this article refers in a more restricted way to bidirectional communication networks, 
and to technology-based networks. 
Source: en.wikipedia.org
History
• The first global network was established using electrical telegraphy and global span was 
achieved in 1899. The telephony network was the second to achieve global status, in the 
1950s. 
Source: en.wikipedia.org
Interconnected IP networks
• More recently, interconnected IP networks (principally the Internet, with estimated 2.5 
billion users worldwide in 2014, and the GSM mobile communication network (with over 6 
billion worldwide users in 2014) form the largest global networks of all.
Source: en.wikipedia.org
Setting up global networks
• Setting up global networks requires immensely costly and lengthy efforts lasting for decades. 
• Elaborate interconnections, switching and routing devices, laying out physical carriers of 
information, such as land and submarine cables and earth stations must be set in operation. 
Source: en.wikipedia.org
Networks of individuals
• In addition, international communication protocols, legislation and agreements are involved. 
• Global networks might also refer to networks of individuals (such as scientists), communities 
(such as cities) and organizations (such as civil organizations) worldwide which, for instance, 
might have formed for the management, mitigation and resolve of global issues.
Source: en.wikipedia.org
Satellite global networks
• Communication satellites are an important part of global networks. However, there are 
specific low Earth orbit (LEO) global satellite constellations, such as Iridium, Globalstar and 
Orbcomm, which are comprised by dozens of similar satellites which are put in orbit at 
regularly spaced positions and form a mesh network, sometimes sending and receiving 
information directly among themselves. 
Source: en.wikipedia.org
Mobile wireless networks
• It is estimated that 80% of the global mobile market uses the GSM standard, present in more 
than 212 countries and territories. 
• Its ubiquity makes international roaming very common between mobile phone operators, 
enabling subscribers to use their phones in many parts of the world. 
Source: en.wikipedia.org
Network interconnection
• The telegraph and telex communication networks have been phased out, so interconnection 
among existing global networks arise at several points, such as between the voice telephony 
and digital data networks, and between these and satellite networks. 
• Many applications run now on several networks, such as VoIP (voice over IP). 
Source: en.wikipedia.org
Social and economic impact
• Global networks have revolutionized human communication several times. The first to do so 
was the electrical telegraph. Its impact was so large that it has been dubbed the Victorian 
Internet. 
• It was expanded many times in its coverage with the advent of radiotelegraphy, and with text 
messaging using telex machines.
Source: en.wikipedia.org
THANK YOU