CONVERGENCE IN VOICE COMMUNICATION
In this age of convergence, voice communication can be done from multiple networks with multiple connecting devices and from multiple locations. The mobile phone connected to wireless network can communicate with landline telephone connected to PSTN network as well as with multimedia computer connected with the Internet. Instant messages can be sent from a computer to a mobile phone. Devices from one network can communicate with devices from other network through gateways. Gateways are communication devices used to interface different networks. Manufacturers are developing multipurpose plug and play devices which can be connected anywhere at any time.
