DCS Telecom Today's Smart Communication - VOIP Phones | Seite 3

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POTS
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Packets
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Much earlier, in the twentieth century to be precise businesses,
campuses and homes used what was known as POTS (Plain Old
Telephone system). This is basically the traditional standard
telephone technology that used the public switched telephone
network (PSTN).
Packets simply acts as electronic envelops into which voice signals
to be transmitted are put. Packets include not only the voce signal
but also the network addresses of both the sender and the receiver.
IP Telephony
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IP technology was way more superior to the two earlier telephony
services. It uses the internet protocol for its transmission and this
comes with quite a number of additional capabilities. Initially, this
telephony service depended on internet but today this is not
absolutely necessary.