Opus can be loaded just like the other codecs in FreeSWITCH. Update: added (FS version 1.6.16) Using Opus in FreeSWITCH The mod_opus module supports two variants of Opus: one at 48 KHz which can be used for WebRTC and it's present in the default configuration, and one which enforces the sampling rate at 8000 Hz and can be used for transcoding with widely used 8000 Hz codecs with as little CPU consumption as possible. Its adaptability makes it suitable for applications running on high-range laptops or smartphones, either standalone or integrated into web browsers.įreeSWITCH support for Opus is independent from the endpoint in use, so it's available for both generic SIP endpoints and verto-based (WebRTC) clients.īesides being a high quality and low latency audio codec, the main features of Opus for VOIP are FEC and the ability to negotiate asymmetry of audio streams. Opus is a required coded for WebRTC, thus guaranteeing interoperability across different implementations. Opus encoding and decoding are supported in FreeSWITCH through its mod_opus module. Opus is an audio codec with high resilience to packet loss, thanks to its Forward Error Correction (FEC) techniques. FreeSWITCH is an open source telephony platform supporting communication technologies such as SIP and WebRTC.
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