Summary
This chapter considered the design of IP Telephony solutions in the context of their deployment considerations, key components, and Cisco-specific solutions for SMBs, enterprise branches, and carrier/ISP environments. Key deployment considerations are high service availability and high voice quality. The increasing reliability of the IP-based data networks (LANs, WANs, MANs), the availability of high bandwidth—not just in LANs but across long distances—and the increase in networking equipment performance all facilitate robust IP network infrastructure to support IP Telephony.
Successful IP Telephony deployments must take into account the built-in expectation on the part of telephony users for high voice quality and service availability. ...
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