Pstn network architecture pdf

Pstn is the aggregate of the worlds circuitswitched telephone networks that are operated by national. Without the telephone, modern cities, transportation networks, corporations, law enforcement, and many. Pdf network gateways are used to set up calls between the public switched telephone network pstn and the internet, but existing gateways support a. The individual subscriber lines are connected to a local exchange, which in turn communicates with trunk exchanges, main and central exchanges. Content over view what is pstn evolution of pstn band width allocation numbering schemes call setup, signaling and switching. The public switched telephone network pstn, also known as plain old.

It consists of the transmission, switching, signaling and intelligent networks. Pdf routing management in the pstn and the internet. The eo processes the customer service request locally or passes it off to the appropriate end or tandem office. Pstn is a centuryold worldwide connected telephone network. Lines within a local exchange typically have the same area code. A threestage pstn migration process is proposed for legacy pstn switch equipment replacement. The public switched telephone network the telephone is among the most profound inventions of the last 150 years. Pstn is the aggregate of the worlds circuit switched telephone networks that are operated by national. Pdf an architecture for residential internet telephony service. Pstn customers connect to the endoffice eo for telecommunications services.

Topic 1200 introduction to public switched telephone. It looks similar to pstn but supports an additional service called terminal mobility. The additional components of the gsm architecture comprise of databases and. The pstn topology and class level might be different in different countries but the original design was only for circuit switching. An architecture for the integration of internet and. In this paper we will use network analysis to study the pstn. The public switched telephone network is a global system that has developed over several decades. Public switched telephone networks mit opencourseware.

The traditional public switched telephone network has a strictly hierarchic architecture and a star structure. Regional seminar on costs and tariffs for tal group member. From the early research of alexander graham bell, telecommunications companies evolved the pstn architecture that provided for yesterdays landline voice communications. The public switched telephone network pstn is used for the landline telephone system. As for pstn, it consists of a switching plane where mobile switching centers mscs may be found. This poster helps you decide which microsoft telephony solution phone system in the cloud or enterprise voice onpremises is right for users in your organization, and how your organization can connect to the public switched telephone network pstn.

Another term commonly used for it is pots, which stands for plain old telephone system, a nongeek way of naming the landline phone system that is being rapidly replaced by newer digital and mobile providers. Telecommunications network and service architectures. The same connections can carry data and image information. The public switched telephone network consists of the local and toll automatic exchanges, switching nodes.