Legacy Circuit-Switching Service

Latest reply: Nov 2, 2019 21:52:26 50 1 1 0

Switched services operate on landline and cellular networks. When a person makes a

call, the network sets up a path between the caller and the dialed party. Importantly, the

path is available exclusively for the duration of the call. The path is not shared. Natural

pauses in conversation and data transmission are not used for other voice or data calls.

Capacity is reserved in the network for the entire duration of the transmission. This

exclusivity causes wasteful utilization of network capacity.

Circuit switching is being gradually phased out in public and wireless networks.

Because of circuit switching’s smaller capacity and inefficiencies, advanced, fourthgeneration

mobile protocols specify non-circuit-switched, IP packet technology. Carriers

increasingly add IP equipment when replacing fully depreciated, older voice

switches or when building new infrastructure.

Last-mile access networks use a mix of IP and circuit switching to carry voice.

Traditional telephone companies, which have investments in older infrastructure, are

in the process of transitioning to IP in their last-mile infrastructure as they move customers

to IP voice. When customers select their telephone provider for Internet access

and TV services, the provider offers to move the subscriber’s voice service to the same

broadband infrastructure as that used for data and TV. Most of them provide VoIP over

the broadband.


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NACA4412
Created Nov 2, 2019 21:52:26 Helpful(0) Helpful(0)

Thanks for the info!
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