article · 2004

INTERNET telephony or Internet TELEPHONY

Henning Schulzrinne

Cited by 0Abstract and details only

Abstract

Internet telephony (or VoIP) has been viewed in two different ways. First, some hold that it is largely similar to earlier architectural changes in the PSTN, continuing the transition from analog to circuit-switched digital and now to packet-switched transmission. Others believe that Internet telephony is primarily another Internet application that happens to interconnect with a “legacy ” network. In this note, we argue that the latter is closer to technical reality, as Internet telephony is largely indistinguishable from other Internet applications at all layers of the protocol stack and that the integration of Internet telephony and other applications is likely to increase rather than decrease, while similarities to the existing voice network are likely to be transition phenomena. • Voice traffic is essentially indistinguishable from other data traffic, particularly if the senders of such traffic have incentives to mask the true nature of the traffic. • Signaling and media flows can traverse completely disjoint network paths, with signaling servers located essentially anywhere in the world relative to the caller or callee. The functionality of common channel signaling has been split into two

Cite this paper

APA 7

Schulzrinne, H. (2004). INTERNET telephony or Internet TELEPHONY.

MLA 9

Schulzrinne, Henning. “INTERNET telephony or Internet TELEPHONY.” 2004.

Chicago

Schulzrinne, Henning. 2004. “INTERNET telephony or Internet TELEPHONY.”

Harvard

Schulzrinne, H. (2004) ‘INTERNET telephony or Internet TELEPHONY’.

BibTeX

@article{schulzrinne2004internet,
  title = {{INTERNET telephony or Internet TELEPHONY}},
  author = {Schulzrinne, Henning},
  year = {2004}
}

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