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H.323 And SIP Integration
White Papers Cisco offers packet voice solutions that offer architectural and protocol flexibility, including the choice of H.323 [International Telecommunications Union (ITU) - T Recommendation H.323], Media Gateway Control Protocol (MGCP), and Session...
[November 15, 2004, 23:00]
Service Architectures In H.323 And SIP - A Comparison
White Papers This paper provides a comparison of H.323 and SIP, focussing on their service architectures. The basic protocol architectures are reviewed, followed by an in-depth evaluation of their service implementation mechanisms.
[December 12, 2004, 23:00]
VCONs White Paper On H.323
White Papers The H.323 standard encompasses audio, video and data communications across packet-based networks - LAN, Intranet, Extranet and Internet. The H.323 standard was developed to allow multimedia products and applications from multiple vendors to...
[August 14, 2003, 0:00]
Delivering SIP-H.323 Convergence And Co-Existence Using A Video PBX Architecture
White Papers As new standards emerge and existing standards evolve, companies are often put into the very difficult position of predicting the future. When in the early stages of standard validation, it is virtually impossible to predict the path and speed a...
[December 12, 2004, 23:00]
An Overview Of H.323 - SIP Interworking
White Papers SIP is an emerging signaling protocol, designed initially for Voice over IP (VoIP) applications, and was particularly successful in carrier class networks. The popularity of SIP has gained momentum and is seen to be making inroads into H.323...
[December 24, 2004, 23:00]
Interworking Signaling Enhancements For H.323 And SIP VoIP
White Papers The Interworking Signaling Enhancements for H.323 and SIP VoIP feature enables VoIP networks to properly signal the setup and tear-down of calls, including generating in-band tones and announcements when needed at the originating or terminating...
[December 26, 2004, 23:00]
Performance Evaluation Of An IPv6-Capable H323 Application
White Papers OpenH323 is an open source H.323 implementation that has been ported to IPv6. This paper briefly introduces the library architecture and the performance criteria with which the ported version should be evaluated.
[October 27, 2004, 0:00]
Troubleshooting H.323 Signaling
White Papers H.323 is known for quite complex signaling high connection set-up latencies and implementation difficulties. In addition, compliance by implementers is usually limited to a subset of H.323's functionality.
[April 2, 2004, 0:00]
Implementing QoS Solutions For H.323 Video Conferencing Over IP
White Papers Many IP video conference applications use the H.323 suite of protocols. The International Telecommunications Union (ITU) H.323 defines an international standard for multimedia over IP. ITU approved the first version of the H.323 standard in 1996.
[October 6, 2005, 0:00]
H.323 Standard - Deploying H.323 For Voice, Video, And Data Communication In IP Networks
White Papers This paper describes the functionality behind H.323 that makes it the communications industry choice as a foundation of future multimedia communications. Similar to the H.320 standard that provides comparable functionality in ISDN networks, H.323...
[October 14, 2003, 0:00]
Deploying H.323 Conferencing On Your IP Network
White Papers Since 1990, when the technology first became available, companies have invested large sums of money in dedicated H.320 videoconferencing systems and the networks to support them. Executives at these companies recognized the value of meeting face-to...
[November 2, 2003, 23:00]
VoIP Holes Remain Open
News Microsoft is still investigating which of its products are vulnerable to a bug in its implementation of the H.323 voice over IP (VoIP) standard. While the company has patched its Internet Security and Acceleration server software against the glitch...
[January 16, 2004, 9:00]
Gateway To Gatekeeper (H.235) And Gatekeeper To Gatekeeper (IZCT) Security Troubleshooting Guide
White Papers H.323 networks have different kinds of configurations and call flows. This document attempts to document most of the security concerns with H.323 networks that involve gatekeepers. This paper summarizes the way each feature works and how to...
[September 8, 2004, 0:00]
General Quality Of Service Practices For TCP/IP Video Conferencing
White Papers The CalVIP Project team has been testing the viability of H.323 videoconferencing for the past year. During this experience, they have determined which deployment techniques provide the most reliability and which deployment techniques don't.
[August 3, 2007, 0:00]
UK Govt Finds Security Flaws In VoIP And Texting Technology
News A technical review conducted by the British government has found several security flaws in products that use VoIP and text messaging, including those from Microsoft and Cisco Systems. The flaws affect software and hardware that support the real...
[January 14, 2004, 7:30]
Adirondack Advanced Network (AAN) Provides Disaster Recovery Services To Remote Mountain Towns In New York
White Papers The Adirondack Advanced Network (AAN) was looking for a solution that both supported IP-based end points and also its many legacy ISDN end. The 70 video conferencing end points and 40 desktop conferencing systems on the network are manufactured by...
[February 17, 2005, 23:00]
SIP: Designed For Interoperability
White Papers As next-generation networks move from the design stage to deployment, a key challenge for service providers and network operators is how to ensure interoperability between different communication protocols.
[February 9, 2004, 23:00]
Making The Call For VoIP Standards
News For as long as the Internet has been on people's desktops, the promise of Internet telephony has been along for the ride. But while some of that promise has been realised -- voice over IP (VOIP) is now a standard service included in many mainstream...
[July 31, 2002, 8:03]
No Gatekeeper Support
Member Review this product does not support the complete h323 standard, they forgot to implement gatekeeper functionality. All you can do to punch it through a good firewall that doesn't let everything out is publish the ports, which means you cannot use...
[March 14, 2004, 8:55]
Intel Net Phone Beta Updated
News The chip giant claims Internet Phone differs from similar utilities in that it supports H.323-based communications rather than proprietary systems. H.323 is an open standard for conferencing, backed by Intel, Microsoft and many other industry leaders.
[September 23, 1996, 14:10]
