Server with 2 GB can support approximately 25-50 concurrent calls.
Server with 1 GB can support approximately 15-25 concurrent calls. Server with 512 MB RAM can support approximately 5-15 concurrent calls. It is not that bad even if we choose wrong, since we can resize our server at any time later, but some best practices showed that we should follow this calculations. That will depends mostly on the number of the concurrent calls that we anticipate to have. We also need to determine the size of our server. Cyrus SASL (Simple Authentication Security Layer)īefore we start with the installation, we must make sure that the server has decent and stable internet connection and it should be in a geographical location near the place where the majority of our calls will come from. FreePBX distribution is unified server distribution that includes all of the software packages and dependencies required for Asterisk VoIP server, such as: It is usually included in the asterisk distribution, but it can be installed manually if needed. It is open source graphical user interface that makes asterisk management very easy. In order to control Asterisk, we will use FreePBX. Asterisk includes many features like Voice mail, conference calling, Interactive voice response, automatic call distribution, Fax to email services etc. Its name comes from the asterisk symbol, *. Like any PBX, it allows attached telephones to make calls to one another, and to connect to other telephone services, such as the public switched telephone network (PSTN) and Voice over Internet Protocol (VoIP) services. In this tutorial we are installing FreePBX & Asterisk VoIP on a base CentOS 6.4 installation.Īsterisk is an open source software implementation of a telephone private branch exchange (PBX) it was created in 1999. Some of them are choosing hosted solution, some are having their own In-House solution. 
The PBX network also provides audio, video and instant messaging communication through the TCP/IP protocol stack for its internal network and interconnects its internal network with the Public Switched Telephone Network (PSTN) for telephony communication.Ī lot of successful businesses are aiming to have their own telephony system that will allow them to have many different features, lower their costs using VoIP, especially on international calls, but inside that company as well. PBX (stands for private branch exchange) is a private telephone network used that can be very easily connected to the public landline and mobile networks.
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