Chapter 3. Understanding and Configuring Analog Voice Ports

Now that you understand the fundamental components of a VoIP network, and you have been exposed to various VoIP design considerations, in this chapter you learn how to start configuring voice interfaces on a VoIP router. Specifically, this chapter addresses the configuration of analog voice ports; Chapter 4, “Understanding and Configuring Digital Voice Ports,” addresses digital voice ports.

Call Types

First, consider the following categories of voice calls that will be using these voice ports:

  • Local calls: A local call occurs when the calling and called phones are both physically attached to the same router.

  • On-net calls: On-net calls span more than one router. Specifically, the calling phone ...

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