Shall I make this call with the landline, mobile or VOIP? Laptop or PDA? Let the phone and the network decide for themselves, say European researchers planning a future of seamless communications. At one time there was no choice. If you wanted to speak to someone you picked up the phone on the desk and called them. Today, you can also use a mobile cellular phone which could be either GSM or 3G. Or you could use VOIP from your desktop PC to route the call over the internet. (source: cordis.europa.eu)
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