Amazon Chime SDK PSTN Audio vs FreeSWITCH
Amazon Chime SDK PSTN Audio
aws.amazon.com
FreeSWITCH
signalwire.comSide by side
| Figure | Amazon Chime SDK PSTN Audio | FreeSWITCH |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 3 |
| Spec score · Voice APIs | 7.8 (#12) | 8.0 (#10) |
| Integrations | Call analytics offers pre-built integrations with Amazon Transcribe and Amazon Transcribe Call Analytics for real-time voice analytics and transcriptions. | FreeSWITCH documents integrations through HTTP backends, embedded Lua, Perl, Python, JavaScript and Java, and SignalWire connectivity. |
| Purpose | Amazon Chime SDK lets developers embed real-time communication capabilities in their applications. | FreeSWITCH is an open-source framework for real-time voice and video that can route calls, bridge video, transcode media, and connect protocols. |
| Use cases | AWS identifies SIP trunking for routing phone calls to multiple office locations as a Chime SDK use case. | The maker describes FreeSWITCH as powering carriers, contact centers, and communication products. |
Plans
Amazon Chime SDK PSTN Audio
- PSTN Audio Application UsagePriced on request
FreeSWITCH
- FreeSWITCH Open SourceFree
- FreeSWITCH AdvantagePriced on request
- SignalWire PlatformPriced on request
In their own words
Amazon Chime SDK PSTN Audio
Amazon Chime SDK PSTN Audio has no write-up on Specifiction yet; its figures are above.
FreeSWITCH
FreeSWITCH is an open-source framework for real-time voice and video communications. It can route calls, bridge video, transcode media, and connect protocols, and is designed for use in carriers, contact centers, and communication products. Its Event Socket exposes call control, channel management, and internal events to external processes over TCP. Integrations include HTTP backends, embedded Lua, Perl, Python, JavaScript, Java, and SignalWire connectivity. The mod_signalwire module connects to SignalWire for inbound and outbound PSTN calling over a persistent WebSocket session. Linux installation guidance covers Debian and Ubuntu using SignalWire packages or a source build. A free SignalWire account is required to access packages and downloads. FreeSWITCH is licensed under MPL 2.0 and can run in production at no cost; self-hosting requires dedicated resources to maintain on-premises infrastructure. The open-source edition has community support, while FreeSWITCH Pro offers commercial support, hardened builds, priority patches, and commercial modules including answering machine detection and licensed G.729 Annex A encoding and decoding.