VoIP communications are conducted via your internet connection and allow you to make low-cost or free local and international calls. Naturally, the system would only be feasible if you could dial someone using regular corded phones and a PSTN (Public Switched Telephone Network) phone number.
The way the two systems interact with one another is through creation of contact numbers. Since the regular phone network already uses converted analogue to digital data there are no issues there.
When you use an internet-based communications device it is traced by an IP address. VoIP converts your IP address into a contact number before handing over to the phone network when you need to make a call.
The system works both ways and this is how the two networks can interact with one another. Cellular networks and other networks like LAN (Local Area Networks) can work alongside VoIP in a similar way. This enables dual-mode mobile handsets that can automatically switch between networks without even needing to end a call.
VoIP is becoming increasingly popular and there are now a range of digital cordless phones that can be used with your regular landline or VoIP line depending on which you prefer. Some handsets even incorporate the use of email and video communications.
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