Translators and mixers are middleboxes that are placed in the network that transform the media stream within a session are sometimes necessary when handling conferencing sessions or traversing firewalls.
- [Instructor] When transmitting multimedia…over a complex network,…it's important that all sites receive the data…in the correct format.…Translators and mixers are middleboxes…that are placed in the network,…that transform the media stream within a session.…They're sometimes necessary…when handling conferencing sessions…or traversing firewalls.…Translators transform real-time transport protocol media…as it passes through a network…to better suit the characteristics…of the output network.…
Uses include…providing a bridge between different transport protocols,…adjust for lower or higher quality bandwidth…by converting between media codex.…Pass through application layer firewalls…or add or remove encryption.…The translator is transparent to participants,…as they won't even know that the data has been modified.…
Translators include bridges,…transcoders,…exploders,…and mergers.…Bridges are one-to-one…and are the simplest type of translator.…A bridge doesn't change the encoding…or modify the RTP data.…However, it provides translation…
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