Chapter 2 Addressing VoIP Design Considerations
Designing a VoIP network requires the designer to consider the special requirements of voice traffic and quality challenges that can arise from just superimposing voice on top of an existing data network. This chapter considers how voice quality, in addition to the integrity of modem, fax, and dual tone multifrequency (DTMF) transmissions, can be impacted in a VoIP network, and what solutions are available. As you will see, bandwidth availability is a major design consideration, and this chapter examines various factors impacting the bandwidth demand of a voice call.
Also, many VoIP features require considerable processing power (for example, mixing multiple audio streams together in a conference ...
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