Main portion of the advantages of the Asterisk server appears from it being an open source downloadable product. Most of the users, especially business people, can find it difficult to understand the idea behind this principle, or free software, but a business models behind open source are different and specific, as in case with Asterisk server.
a2zTEL Communications Inc
A2ZTEL is a global leader in delivering high-quality international and domestic long distance calling services to subscribers at a fraction of the cost of traditional carriers by leveraging the power of the Internet.
A2ZTEL is a cost effective commun
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