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Sneak Preview of CCIE-level VoIP Study Guide

Later this week Certification Zone will release our new CCIE-level VoIP Study Guide. This excerpt addresses dial plans. Dial plans intelligently route your phone calls. For instance, you don't want to send local calls to your long distance circuit. A dial plan describes the number and pattern of digits that a user dials to reach a particular telephone number. Access codes, area codes, specialized codes, and combinations of the number of digits dialed are all part of a dial plan.

CCIE Voice Written Exam Study Guide Sneak Preview

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