By Syngress, Martin Walshaw
Arming community directors with an intensive realizing of Cisco's present VoIP suggestions and the skill to place them to paintings, Configuring Cisco Voice Over IP, moment version demonstrates easy methods to configure all of Cisco's middle VoIP products-among them Cisco CallManager software program, Cisco 7910 sequence telephones, and server-based IP PBXs. Now up-to-date with insurance of Cisco's AVVID company ideas, this publication keeps to provide hands-on counsel on enforcing QoS (Quality of carrier) beneficial properties to lessen community latency and jitter. It additionally offers case reports illustrating real-world VoIP configuration and troubleshooting techniques.
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Additional info for Configuring Cisco Voice Over IP
In a simple configuration, this can be used for sending faxes to a remote site over a private network. qxd 8/14/02 2:56 PM Page 11 Introduction to Voice Over IP and Business Justifications • Chapter 1 Video Video and audio conferencing applications allow users to communicate in pairs or in groups across the Internet or an intranet. Both Microsoft and Cisco offer corporate video applications. Microsoft NetMeeting, widely used for conferencing, includes built-in audio, video, whiteboard, chat, file transfer, program-sharing, and collaboration functions.
In particular, the Cisco IP Phone 7960 and IP Phone 7940 are feature-rich and include small liquid crystal display (LCD) displays, control buttons, and multiline capabilities. The Cisco IP Conference Station 7935 is an IP conference phone. qxd 8/14/02 2:56 PM Page 9 Introduction to Voice Over IP and Business Justifications • Chapter 1 IP Softphones The Cisco IP SoftPhone is a virtual telephone that runs in a Windows desktop PC or laptop. The PCs contain speakers and microphones that can operate similarly to a telephone handset.
Hopefully, most of the calls are between the remote sites and the central office. But what happens when there are calls between remote sites? Let’s say Bob in Baltimore wants to call Lewis in Los Angeles. To begin with, you would be encoding and decoding the calls twice. As the call leaves Baltimore it gets encoded, and when it arrives in Denver it gets decoded. That alone is an inefficient usage of hardware. The exception would be if you were using Cisco Switched VoFR, which would allow the call to be passed through without multiple encodings.