PJSIP version 2.5 is released with main focus on Opus codec and WebRTC AEC integrations. The PJSIP bundled libsrtp package has also been upgraded to version 1.5.4 which brings a higher level of media security via AES-256 crypto suites.
As usual the release also includes several enhancements and bug fixes, please see the Release Notes page for more info and grab the source code from the Download page.