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Asterisk Open Source IP Telephony


What is Asterisk?

Asterisk is a free and open source framework for building communications applications.

Who Uses Asterisk?

Asterisk, the world’s most widely adopted open source communications platform, is installed on more than 1 million servers worldwide and used by most Fortune 500 companies as part of their telephony solutions.

Where Did It Come From?

The Asterisk project started in 1999 when Mark Spencer released the initial code under the GPL open source license. Since that time, it has been enhanced and tested by a global community of thousands. Today, Asterisk is maintained by the combined efforts of Digium and the Asterisk community.

By utilizing Asterisk, RSTG’s dCAP certified engineers can turn everyday computer hardware and solid-state systems into IP Telephony solutions. These solutions include full PBX Systems, VoIP gateways, TDM-to-SIP trunking solutions, and more. Your company can utilize Asterisk as a full PBX or use it to enhance your current PBX system. We can even use it to bridge the gap between your legacy PBX and a new IP PBX platform, combining both traditional TDM as well as SIP solutions to lower your operating costs.

Leveraging our Asterisk dCAP and Digium dCSE certified engineers, RSTG can design, sell, deploy, and service an entire Voice-Over-IP solution for your company. With proven results on projects as small as a single building to large multi-campus educational environments with hundreds of extensions, RSTG is a proven leader in VoIP design and deployment.

Did you know

Our founder was in one of the first groups of engineers to pass the Asterisk dCAP certification exam when it was first introduced.

With programming and engineering talent in both the commercial Switchvox product as well as the open source Asterisk platform, RSTG works with our clients to build a comprehensive VoIP solution that meets their needs. Utilizing best-in-class hardware and software solutions, RSTG can integrate VoIP into your company’s legacy phone systems while paving the way for a smooth migration to a complete VoIP solution.

Our engineers have completed projects as small as five extensions to our largest where, utilizing the power of Asterisk, we converted a call center with over 900 inbound phone lines to a complete VoIP solution, saving our client almost $1M in the first year.

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