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.
TeleCable Services is primarily an Internet based company and while we do have customer service representatives on hand, emails are generally handled much faster than direct phone calls.