H.323 Insights

What is H.323?

H.323 is a recommendation from the ITU (International Telecommunication Union) that defines the protocols to provide audio-visual communication sessions on any packet network. It provides a standard for devices and applications from different vendors to interoperate. It is commonly used in Voice over IP (VoIP), video conferencing, and internet telephony.

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What other technologies are related to H.323?

H.323 Competitor Technologies

MGCP

MGCP is a VoIP control protocol, which served as a competitor to H.323 in early VoIP systems for controlling media gateways.

mentioned alongside H.323 in 57% (1.3k) of relevant job posts

SIP

SIP (Session Initiation Protocol) is a signaling protocol widely used for VoIP and multimedia communication. It is a major competitor to H.323.

mentioned alongside H.323 in 13% (3.8k) of relevant job posts

H.320

H.320 is a standard for videoconferencing over ISDN lines, competing with H.323 for video communication solutions.

mentioned alongside H.323 in 90% (202) of relevant job posts

Skinny

Skinny Client Control Protocol (SCCP) is a Cisco proprietary protocol for VoIP which can be used as an alternative to H.323 for endpoint control.

mentioned alongside H.323 in 71% (118) of relevant job posts

H.248

H.248 (Megaco) is a protocol used for controlling media gateways, similar to MGCP, and is therefore a competitor to H.323.

mentioned alongside H.323 in 35% (103) of relevant job posts

SCCP

Skinny Client Control Protocol (SCCP) is a Cisco proprietary protocol for VoIP which can be used as an alternative to H.323 for endpoint control. It's basically the same as Skinny.

mentioned alongside H.323 in 22% (159) of relevant job posts

H.323 Complementary Technologies

E.164

E.164 is an international numbering plan for telephone numbers. It is a complementary technology as H.323 uses phone numbers.

mentioned alongside H.323 in 92% (100) of relevant job posts

RTP

RTP (Real-time Transport Protocol) is a protocol for delivering audio and video over IP networks and is used by H.323 to transport the actual media streams.

mentioned alongside H.323 in 8% (634) of relevant job posts

Firewall Traversal

Firewall traversal techniques are necessary for H.323 to work across network boundaries.

mentioned alongside H.323 in 71% (67) of relevant job posts