O'Reilly logo

CCNA Voice: Official Exam Certification Guide by Jeremy Cioara, Kris A. Krake, Michael J. Cavanaugh

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 7. Gateway and Trunk Concepts

  • The Process of Converting Voice to Packets: This section discusses the Nyquist theorem as it relates to converting the audio coming into a telephone into a digital packet.

  • Choosing a Voice Codec: One of the key facts you’ll need to know before deploying VoIP is how much network bandwidth the audio will use. This section discusses a variety of voice codec considerations along with the necessary bandwidth calculation formulas.

  • Trunking CME to the PSTN: The PSTN remains the key connection for any voice network. This section discusses multiple analog and digital methods to connect to the PSTN.

  • Trunking CME to Other VoIP Systems: In the next-generation voice network, communication can occur between offices over the ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required