Chapter 7. Design Guide for Fax, Modem, and Text
In the design and planning stage of many VoIP networks, accounting for modulated communications, such as faxes, modems, and text telephony devices is often omitted or forgotten. Unfortunately, because of some of the unique characteristics of transporting modulated communications over IP and certain gateway and protocol interoperability issues, this can lead to problems later during network implementation.
This chapter provides the design and planning information necessary to ensure that a proposed VoIP network solution will also properly handle the transportation of fax, modem, and text communications. Specifically, the following sections are covered:
General Passthrough and Relay Design Considerations: ...
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