Topic: H.323 Protocol

Message

   H.323 Protocol

H.323 is a protocol standard for multimedia communications. H.323 was
designed to support real-time transfer of audio and video data over
packet networks like IP. The standard involves several different
protocols covering specific aspects of Internet telephony. The
International Telecommunication Union (ITU-T) maintains H.323 and these
related standards. 

Most
applications utilize H.323. H.323 supports call setup, teardown and
forwarding/transfer. Architectural elements of a H.323 based system are
Terminals, Multipoint Control Units (MCUs), Gateways, an optional
Gatekeeper and Border Elements. Different functions of H.323 run over
either TCP or UDP.

Public Switched Telephone Network

PSTN is the global collection
of interconnects originally designed to support circuit-switched voice
communication. The PSTN provides the traditional Plain Old Telephone
Service (POTS) to residences and many other establishments. Parts of
the PSTN are also utilized for DSL,  and other Internet-based network technologies. 

The basic PSTN network link supports 64 Kbps bandwidth. In residences,
the PSTN phone line carring this bandwidth is typically a copper cable.
Traditional dial-up modems utilize nearly 56 Kbps of this bandwidth
when connected to a phone line. The PSTN utilizes the signaling protocol.
_________________

Author	Message
vidhya Senior Member Joined: 24Mar2007 Online Status: Offline Posts: 114	Topic: H.323 Protocol Posted: 29Mar2007 at 1:55am
	H.323 Protocol H.323 is a protocol standard for multimedia communications. H.323 was designed to support real-time transfer of audio and video data over packet networks like IP. The standard involves several different protocols covering specific aspects of Internet telephony. The International Telecommunication Union (ITU-T) maintains H.323 and these related standards. Most applications utilize H.323. H.323 supports call setup, teardown and forwarding/transfer. Architectural elements of a H.323 based system are Terminals, Multipoint Control Units (MCUs), Gateways, an optional Gatekeeper and Border Elements. Different functions of H.323 run over either TCP or UDP. Public Switched Telephone Network PSTN is the global collection of interconnects originally designed to support circuit-switched voice communication. The PSTN provides the traditional Plain Old Telephone Service (POTS) to residences and many other establishments. Parts of the PSTN are also utilized for DSL, and other Internet-based network technologies. The basic PSTN network link supports 64 Kbps bandwidth. In residences, the PSTN phone line carring this bandwidth is typically a copper cable. Traditional dial-up modems utilize nearly 56 Kbps of this bandwidth when connected to a phone line. The PSTN utilizes the signaling protocol. _________________
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