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Understanding MGCP/Megaco (H.248)

From the course: Learning VoIP and Unified Communications

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Understanding MGCP/Megaco (H.248)

“

- [Instructor] When transmitting multimedia over an IP network, the signal must go through multiple transformations and devices before reaching its final destination. Some of those devices include media gateway controllers. They're also called call agents or softswitches, and these provide signaling logic. Media gateways provide media logic to convert circuit-switched voice traffic to packet-based traffic. Media Gateway Control Protocol handles the signaling and session management required during a multimedia session between the media gateway controller and the media gateway. Megaco, more commonly known as H.248, performs the same functions as Media Gateway Control Protocol, but it is an enhanced version that can operate with either H.323 or Session Initiation Protocol. A lot of times it's simply referred to as MGCP Megaco. In this illustration, we see a couple of the components. Up on the top, you see two media gateway…

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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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