Chapter 12. Troubleshooting Passthrough and Relay
Troubleshooting fax, modem, and text problems in IP networks can become quite complex, and it requires a solid base of knowledge in several key areas. The previous chapters in this book covering how faxes, modems, and text devices work, their transport over IP, network design, and configuration provide the solid knowledge base required for understanding and using the information contained in this troubleshooting chapter.
Many aspects and methods of troubleshooting passthrough and relay overlap. Therefore, to eliminate redundancy, the content at the beginning of this chapter looks at these two transport mechanisms together along with their troubleshooting commonalities. Later in the chapter, troubleshooting ...
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