Thanks to my current job I have had the opportunity to become familiar with some PBX systems (acronym for Private Automatic Branch eXchange) telephone systems commonly called .
In particular, I learned to work with Asterisk . When
VoIP now we hear about Skype, Ekiga, Wengo software or otherwise which, once installed on your PC, lets you communicate with other people using the same application.
The concept of VoIP lines is much broader and covers, among other things, the integration of traditional telephony (PSTN or ISDN) and IP telephony.
integration that allows us to use the regular phone "analog" to make phone calls over the Internet in a totally "transparent" to you: there is no need to install software on your PC, no need to change phone there is no need to change the numbering system.
Asterisk, due to its high flexibility, can exploit both the public telephone network or your telephone, using the appropriate hardware, IP telephony systems through the various protocols SIP, IAX2, Skype, etc ...
addition, with the latest release, Asterisk has reached a level of stability that can be used as a real solution PABX independent transforming the GNU / Linux server - Asterisk in a replacement of "old" exchange.
With all the advantages (many) and cons (few) who come ....
But we'll talk about soon!
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