Download Asterisk 1.6 by Barrie Dempster, David Gomillion, David Merel PDF

By Barrie Dempster, David Gomillion, David Merel

The e-book bargains readers either a close description in addition to step-by-step directions on deploying software program ideas in addition to Asterisk configurations. Screenshots are supplied in sections to offer a visible standpoint of the directions. For Asterisk configurations genuine pattern code is indexed within the e-book which are at once inserted into your Asterisk answer. This publication is geared toward someone who's drawn to construction a strong telephony process utilizing the loose and open resource program, Asterisk, with no spending many hundreds of thousands of bucks paying for a advertisement and sometimes much less versatile procedure. This publication is appropriate for the beginner and people new to Asterisk and telephony. Telephony or Linux adventure could be useful, yet now not required

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Sample text

The total cost of owning Asterisk can also include downtime. If we choose to support Asterisk on our own, and have to work to try to get Asterisk back up after a failure, there is an opportunity cost involved in the calls we should have received. This is why we should choose to support our phone system internally only if we have the appropriate resources to back that up. Total Cost of Ownership (TCO) is not an easy calculation to make. It involves assumptions of how many times it will break, how long it will take us to get it up and running, and how much the consultants will charge us if we hire their services.

Let's take a moment and look at some of the considerations we must explore before we commit to using Asterisk. Trade-offs There are a series of trade-offs we must consider with Asterisk. Choosing Asterisk will lock us into certain choices, while others will be available whether we install an Asterisk server or not. We will now examine some of these trade-offs so that we can gauge the impact they have on us. Flexibility versus ease of use Asterisk is a very powerful framework into which we can install almost anything.

Suppose we chose a 4-digit extension and have the phone numbers 555-1234 and 777-1234. Which one is extension 1234? Or suppose we use 7 digit extensions and have (800) 555-1234 and (866) 555-1234. Which one is extension 5551234? Thus, some organizations have moved to a full 10-digit extension length. While this allows 1010 extensions, it can cause some users to complain about usability and convenience. With the flexibility of Asterisk, we can choose many different ways to allocate extensions, all of which will influence our decision on extension length.

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