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The first circuit-switched network was the telephone system.
PSNT Public Switched Telephone Network
Signaling System 7 managed traffic flow through a telephone network
PSTN Network (Public Switch Telephone Network)
If you are looking for a good telephone system for a business, I would go with one that provides a large network that also does wireless such as AT&T or Comcast.
In order to used this networks in conjunction with other apparatus in telephone system they must be provide efficient transmission !
Public Switched Telephone NetworkPublic Switched Telephone NetworkPublic Switched Telephone NetworkPublic Switched Telephone Network
It must be coonected to to telephone line
Analog Switches FO Cables
because it has wirelike cells connected to the different parts of the body.
if you are allowed to Telecom network is a Telephone and Cable TV Network and computer network involves computers. What did you do
they difference is the network operating system is the type of system that a computer or -IT technology Company uses after it has trademarked it. The OPERATING SYSTEM is the home version