Explain Public Switched Telephone Network (PSTN) Characteristics And Services, What Is PSTN Explain
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Public Switched Telephone Network (PSTN)
PSTN is the telephone network that by default most of the world population is connected to if they have a telephone.
For a long time, the PSTN was the only bearer network available for telephony.
Other bearer networks for voice transmission include integrated service digital network(ISDN), ATM, frame relay.
PSTN characteristics
Analog access
Circuit switched duplex connection
Immobility
PSTN services
Calling line identification presentation (CLIP) (also called ”caller ID”)
Call forwarding
Call-back
Call waiting