The ultimate objectives of internet telephony is, of course, reliable, high-quality voice service, the kind that users expect from the PSTN. At the moment, however, the level of reliability and sound quality is not available on the internet, primarily because of bandwitch limitations that lead the packet loss. In voice communciations, packet loss shows up in the form of gaps or periods of silence in the conversation, leading to a clipped- speech effect that is unsatisfactory for most users and unacceptable in business communications.
In addition , because the internet is a packet-switched or connectionless network, the individual packets of each voice signal travel over separate network pathsfor reassembly in the proper sequence at their ultimate destination. While this makes for a more efficient use of network resources than the circuit-switched PSTN, which routes a call over a single path, it also increases the chances for packet loss.
In addition , because the internet is a packet-switched or connectionless network, the individual packets of each voice signal travel over separate network pathsfor reassembly in the proper sequence at their ultimate destination. While this makes for a more efficient use of network resources than the circuit-switched PSTN, which routes a call over a single path, it also increases the chances for packet loss.
