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VoIP Performance Management and Optimization by Habib Madani, Adeel Ahmed - CCIE No. 4574, Talal Siddiqui - CCIE No. 4280

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Chapter 4. Internet Telephony

This chapter gives you an understanding of how Voice over IP (VoIP) is deployed over a publicly shared infrastructure such as the Internet. In these deployment models, the company providing VoIP services to end customers might not own the entire infrastructure that is used for deploying this service. It might use infrastructure owned by other entities to provide VoIP as an overlay service by deploying some of its own network components required for offering the VoIP service. Examples of such providers include Vonage (http://www.vonage.com), Skype (http://www.skype.com), and so on.

Service providers (SP) that offer VoIP services using the public Internet infrastructure are referred to as VoIP SPs. Because the VoIP ...

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