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Implementing Cisco Unified Communications Voice over IP and QoS (CVOICE) Foundation Learning Guide, Fourth Edition by Kevin Wallace

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Chapter 2. Configuring Basic Voice over IP

After reading this chapter, you should be able to perform the following tasks:

• Describe how VoIP signaling and media transmission differs from traditional voice circuits, and explain how voice is sent over IP networks, including analog-to-digital conversion, coding, packetization, and all variants of RTP.

• Describe the characteristics of H.323 and explain when to use it.

• Describe the characteristics of SIP and explain when to use it.

• Describe the characteristics of MGCP and explain when to use it.

• Discuss special requirements for VoIP call legs, including the need for QoS, fax/modem relay, and DTMF support.

• Describe how to configure dial peers to meet special requirements.

VoIP transmission ...

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