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Can you tell me about voice over packet switched WAN's?

Can you tell me about voice over packet switched WAN's?
With packetized voice, the actual voice sounds are sampled and placed inside a packet to be routed over a packet switched network. This is different from the old circuit switched network in that a circuit is not set up. The packets are reassembled at the receiving end back into voice that can be understood at the receiver.
This was last published in November 2003

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