MGCP/Megaco (H.248) handles signaling and session management required during a multimedia session. Media gateway controllers use MGCP/Megaco to control the way media gateways set up multimedia transmissions.
- [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 Controllers…or softswitches communicating with one another.…The lower part of the graphic…here we see two Media Gateways.…
Lisa Bock compares the traditional Public Switched Telephone Network (PSTN) to VoIP, and discusses the framework and components necessary for VoIP to be possible. She reviews codecs, including characteristics such as bitrate and voice quality; protocols for setup, communication control, and data transport; and media gateways, signaling protocols, and intermediary systems such as translators and mixers. Lisa then reviews business integration and the importance of conducting a needs analysis and network assessment prior to implementation. Learn about the many value-added services UC can provide, such as integrating VoIP with email, billing, management software, and other customer management systems. Lisa wraps up with a discussion on how ensuring quality of service (QoS) in a VoIP network minimizes latency and jitter and the importance of VoIP security to prevent malware, impersonation, hijacking, and denial of service attacks.
- History and evolution of PSTN
- UC overview and components
- Gateways, including signaling gateways, translators, and mixers
- Integrating VoIP and UC into your business network