The H323Plus project, formerly OpenH323, has as goal developing a full featured, open source (MPL) implementation of the H.323 Voice over IP protocol. The code is written in C++ and, through the development effort of numerous people around the world, fully supports the H.323 protocol. The software has been integrated into a number of open source and commercial software products.

Software published under the OpenH323 project includes

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The implementation of VoIP protocols

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  • PTLib - a multi-platform C++ class library. Programs based on PTLib can run on both Microsoft Windows and Unix/Linux. The library contains both the “basic” classes (strings, arrays, lists) and the higher-level functionality (networking, multi-threading).
  • H323Plus – a library for the development of H.323 applications. It uses PTLib for platform independence. The library has its own ASN.1 parser that generates the classes for encoding and decoding of the protocol messages used in H.323.

Sample network phones implementations

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  • OhPhone: Command-line phone
  • OpenPhone: GUI for OpenH323
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  • OpenMCU: Conference server
  • OpenAM: Answering machine
  • OpenIVR: Interactive Voice Response
  • GNU Gatekeeper: H.323 Gatekeeper
  • PSTNGw: Serves as a gateway between H.323 and PSTN
  • CallGen323: H.323 call generator
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📚 Artikel Terkait di Wikipedia

OpenH323

VoIP protocols such as SIP and IAX2 changing the API considerably. The H323Plus project continued the expansion of the support for H.323 as well as support

GNU Gatekeeper

software project that implements an H.323 Gatekeeper based on the OpenH323 or H323Plus stack. A gatekeeper provides address translation, admissions control, call

NetMeeting

and open source VoIP and video conferencing application that uses H.323 H323Plus: an implementation of the H.323 VoIP protocol suite that has been integrated

Opal (disambiguation)

Universität Berlin Open Phone Abstraction Library (OPAL), a fork of the H323plus project supporting H.323, SIP, IAX2 Opal Storage Specification, a storage