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8.3.1 Modifying Address, Port or Transport The port number for a stream MAY be changed. To do this, the offerer creates a new media description, with the port number in the m line different from the corresponding stream in the previous SDP. If only the port number is to be changed, the rest of the media stream description SHOULD remain unchanged. The offerer MUST be prepared to receive media on both the old and new ports as soon as the offer is sent. The offerer SHOULD NOT cease listening for media on the old port until the answer is received and media arrives on the new port. Doing so could result in loss of media during the transition. Co-authored-by: Anthony Minessale <anthm@signalwire.com>
FreeSWITCH
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device. Combined with our hosted cloud platform, SignalWire, FreeSWITCH can interconnect with the outside world and scale to any size.
Visit https://signalwire.com or https://github.com/signalwire for more info.
Getting Started
FreeSWITCH is available on Github in source code format. You can checkout the development branch and build for many popular platforms including Linux, Windows, MacOSX and BSD. There is an issue tracker and pull request system available as part of the repo online.
See https://freeswitch.com/#getting-started for more detailed instructions.
Additional Help
If you need assistance or have an interest in using a commercially supported build, you can contact coreteam@freeswitch.com to learn about professional services to support your project.
Voice-over-IP services - SIP / SMS - App Integrations
SignalWire is the primary sponsor of the FreeSWITCH project and was founded by the original developers of FreeSWITCH. SignalWire provides scalable services to enhance and scale your project such as SMS, SIP, Serverless Application hosting as well as programmable telecom. mod_signalwire which is distributed in this code base allows you to instantly pair with SignalWire and extend your FreeSWITCH.
Documentation
The main index for documentation is available at:
Release notes:
Installation
Step by step tutorials to install FreeSWITCH from packages or source code are available at:
- Debian 10 Buster [Recommended]
- Raspberry Pi
- CentOS 7
Downloads
Contributions
GitHub pull requests are the recommended way to contribute to the FreeSWITCH source code:
Community
Slack is our chat system where the developers, the FreeSWITCH team, and the most active users are present. This is the place to get answers faster and chat with other users in real time. All you need to do is enter your email and verify it on the Slack signup page and you are ready to join in the discussion!
Slack Community:
Mailing list:
Thank you for using FreeSWITCH!