3. Classification of VoIP approaches
3.1 Introduction
Today, there are two approaches to providing VoIP and, more generally, multimedia services over IP. The first approach, defined by the IETF, is based on the SIP protocol. The second approach, defined by lTU-T, draws heavily on ISDN, and is described in the H.323 (for terminals located in a corporate network) and H.324 (for terminals connected over a modem link, or 3G videotelephony) recommendations. SIP and H.323 use very different signaling protocols. However, they are based on the same standards for audio and video codecs, as well as for the protocol used to transport samples from the various codecs (RTP/RTCP protocol).
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Classification of VoIP approaches
SIP description
Article included in this offer
"Networks and Telecommunications"
(
174 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
Bibliography
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
