Browse free open source Telephony software and projects below. Use the toggles on the left to filter open source Telephony software by OS, license, language, programming language, and project status.
Simply explore your Android phone!
Issabel PBX - Unified Communications
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Unified Communications Server
A simple noise gate app intended for use with VOIPs like Skype.
VICIdial Contact Center Suite
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
Remote control software for applications using wi-fi or bluetooth
Windows tool to read SIM card information and content
Enterprise telephony recording and retrieval system
A beautiful SMS messenger for Android
Open source telephony software is a category of software that enables the user to make and receive telephone calls using shared or open-source code. This type of software typically includes features like voice over IP (VOIP) technology, Internet Protocol Private Branch Exchange (IP PBX) systems, and call routing services. The cost for these services can vary depending on the specific technologies used; however, they are often much cheaper than traditional phone services since they leverage existing broadband connections. Additionally, many open source telephony applications come bundled with tools such as conference calling and video conferencing capabilities.
The most popular open source telephony application is Asterisk – an open-source communications platform written in C runtime environment originally created by Mark Spencer in 1999. It runs on Linux but can be adapted to Windows and Mac OS X operating systems as well. Asterisk functions as a full-featured IP PBX system capable of delivering real time communications between clients located inside your local area network (LAN).
This highly customizable solution allows users to setup custom extensions for each client’s phone line along with features like voicemail boxes, caller ID blocking, automated attendants and much more – all without having to purchase expensive hardware from vendors like Cisco or Avaya Systems. Since Asterisk is highly extensible through its compatibility with numerous scripting languages (such as Perl), developers can add additional modules or customize existing ones to suit their needs at any given point in time. Additionally, it also supports connectors that allow end users to connect external devices such as standard telephones or Digital Enhanced Cordless Telecommunication handsets which then become part of their VoIP network infrastructure - allowing them access to their employees anywhere there's an internet connection.
Open source telephony software has grown in popularity due to its flexibility and affordability compared with alternatives like subscription hosted VoIP service providers who charge monthly fees for the use of their products. Open source options also offer many advantages over traditional PSTN/POTS infrastructures such as a lower cost for long-distance calls and global support for geographically dispersed teams and businesses alike looking to invest into modern communication systems without paying high upfront costs associated with proprietary solutions offered by vendors like Mitel or NEC Corp., etc..
Open source telephony software can be completely free to use, depending on which platforms you choose. For example, Asterisk is a popular open source telephony platform that is completely free for anyone to download and use. If you wish to use commercial or proprietary software for a more polished experience, then there will likely be some cost associated with the service. Costs can range from hundreds of dollars for basic plans to several thousand dollars for larger enterprise-level solutions. It is important to do your research so you can find out what types of features are included in each type of plan and consider how much money you need to invest in order to get access to the features and reliability that best meet your business's needs.
Open source telephony software can integrate with many different types of software. For example, VoIP (Voice over Internet Protocol) services such as Twilio, Bandwidth and Plivo, CRM applications such as Salesforce and Zoho, customer service platforms like Zendesk, chatbot software such as Dialogflow, billing and invoicing systems like Zuora or Xero, and virtual phone systems for managing inbound calls. These integration points enable users to extend the usefulness of open source telephony by allowing them to automatically route calls from incoming customers to the appropriate agents or departments within their organization. Additionally, these integrations allow important records—such as caller details and call recordings—to be stored in other platforms which can help organizations better track customer interactions.
Getting started with open source telephony software is relatively easy. First, you need to download the software from an open source repository like GitHub or SourceForge. Once you've downloaded the software, install it according to instructions provided by the developers and then run the program on your computer or device. Once the program is running, begin exploring its features and settings to get a feel for how everything works. You may also wish to read any available documentation associated with the software as it will help you understand how best to use the program and make sure you're getting maximum benefit from it.
Next, configure any additional programs that need setting up, such as SIP clients or extensions that enable calls over IP networks. Again, refer to documentation provided by developers if necessary in order to ensure that everything is set up properly. Depending on which version of open source telephony software you are using, there may be other steps involved such as configuring local access points and authentication credentials for remote users; again consult any accompanying documents if this is relevant for your setup.
Finally, once everything is set up and configured correctly it's time to start making calls. Depending on your chosen program there may be various ways of doing this such as calling through a web-based interface or via an application installed onto a mobile device; again consult any relevant documentation in order to identify exactly what method works best for you before beginning actual usage of your new telephony system. With all these preparations complete you should now be ready to start taking advantage of open source telephony solutions - good luck.