Abstract
With the appearance of the Internet as an important communications medium for widespread everyday use, which can be dated to the mid 90s, a need to establish a signalization protocol for multimedia communications was recognized. There were two major proposals: SIP by the Internet community, and H.323 by ITU-T.
Key Terms in this Chapter
MIME (Multipurpose Internet Mail Extensions): Message representation protocol.
ITU-T: International Telecommunication Union (ITU) Standardization Sector.
SCTP: Transport level protocol, used on the Internet.
TLS (Transport Layer Security): Protocol that provides privacy and data integrity.
PSTN/ISDN: Standards of fixed telephony adopted by ITU-T.
XML (Extensible Markup Language): Restricted form of Standard Generalized Markup Language (SGML, ISO 8879).
IN: Telecommunications network architecture standardized by ITU-T.
H.323: The name refers to a set of protocols adopted by ITU-T, aimed at providing multimedia communications in packet networks.
UTF-8: 8-bit Unicode Transformation Format. Encoding standard used in Internet.
3GPP (Third Generation Partnership Project): An organization that develops and promotes standards for third generation mobile phone systems.