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The H.323 wrapper, H.225, and H.245

From the course: Learning VoIP and Unified Communications

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The H.323 wrapper, H.225, and H.245

“

- [Instructor] In this graphic showing a complex network, I'm going to focus on the H.323 signaling up here in the local area network, where you see the call agent or media gateway controller, communicating with another call agent. H.323 signaling is an ITU-T recommendation for audio and video communication across an IP network. In case you're not familiar with this protocol, we can go to the source to find out more detailed information about it. I'm at this page here with the international telecommunications unit, where we can see this recommendation H.323. Keep in mind, it's a recommendation, not a law. It's a guideline for better interoperability. I then, selected the hyperlink for the PDF, and I've opened the document. Now, there's quite a bit to this document but, as I said, if you want it a little bit more detailed information, you can go to the source. H.323 itself isn't a protocol. It acts as a wrapper for media…

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Contents

• Introduction Introduction
  • Providing Voice over Internet Protocol (VoIP) telephony 59s
  • What you need to know 1m 3s
• 1. Unified Communications Overview 1. Unified Communications Overview
  • Unified communications (UC) overview 4m 10s
  • (Locked) Making a call using VoIP 3m 46s
  • (Locked) Evolution of the Public Switched Telephone Network (PSTN) 3m 48s
  • (Locked) Moving from the PSTN to VoIP 3m 6s
• 2. Components and Integration 2. Components and Integration
  • UC components 3m 7s
  • (Locked) Unifying communication systems 2m 47s
  • (Locked) Voice signal conversion with digital codecs 4m 13s
  • (Locked) Data transportation using real-time protocols 4m 3s
• 3. Media Gateway 3. Media Gateway
  • (Locked) Passing telephony data through gateways 2m 28s
  • (Locked) Understanding MGCP/Megaco (H.248) 1m 44s
  • (Locked) Session Initiation Protocol (SIP) 3m 47s
  • (Locked) The H.323 wrapper, H.225, and H.245 3m 32s
  • (Locked) Translators and mixers 2m 50s
• 4. Business Integration 4. Business Integration
  • (Locked) Plan a unified communications system 2m 36s
  • (Locked) Network assessment 4m 28s
  • (Locked) Assure quality of service 3m 44s
  • (Locked) Using STIR/SHAKEN to restore trust 3m 47s
  • (Locked) VoIP security 4m 31s
• Conclusion Conclusion
  • (Locked) What's next? 1m

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