Lisa Bock reviews media gateway controllers, which use MGCP/Megaco to control the way media gateways set up multimedia transmissions. Lisa also dissects a transaction in Wireshark to see how MGCP interacts with a Cisco CallManager.
- [Instructor] When transmitting multimedia…over an IP network,…the signal must go through multiple transformations…and devices before reaching its final destination.…Devices include media gateway controllers.…These provide the signaling logic.…And media gateways,…they provide media logic…to convert circuit-switched voice traffic…to a packet-based network.…Media gateway control protocol is a master/slave protocol…that provides a central gateway…by handling the signal and session management required…during a multimedia session.…
Megaco is also known as H.248.…This performs the same functions…as media gateway control protocol,…but it's a newer protocol…that uses different commands and processes.…Megaco operates either with H.323…or session initiation protocol.…Call agents are external control devices…in a voice system that have complete control of the gateway…and perform all of the administrative tasks.…
Now here, we can see this complex network…and here you can see an interchange between the call agent…and the media gateway,…
- Voice over IP (VoIP) and Unified Communications
- Digitizing a signal
- VoIP components
- Protocols used by VoIP, including TCP/IP and DHCP
- Connecting systems
- Gateways and gatekeepers
- Factors that might affect quality on a VoIP network
- Wireshark statistics
Skill Level Advanced
Wireshark: Advanced Tools and Techniqueswith Lisa Bock1h 49m Intermediate
Learning VoIP and Unified Communicationswith Lisa Bock1h 8m Intermediate
What you need to know4m 11s
1. VoIP Overview
3. Connecting Systems
4. Network Operations
5. Wireshark Statistics
Next steps1m 25s
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