Is DTLS and Media Encryption configuration in FreePBX only available for PJSIP and not CHAN_SIP?

FreePBX Development
1

Hi everyone,
I’m setting up a WebRTC client using CHAN_SIP on FreePBX (version 16.0.40.10 / Asterisk 19.8.0). I came across a statement saying that DTLS and Media Encryption (SRTP) can only be configured via the FreePBX GUI when using the PJSIP driver, and that with CHAN_SIP it must all be done manually.

Here’s the quote I found:
“In FreePBX, DTLS and Media Encryption settings are only available for PJSIP, not CHAN_SIP. If you’re using CHAN_SIP, you’ll need to configure it manually…”

Can anyone confirm if this is actually true? Is there really no way to configure DTLS/SRTP for CHAN_SIP through the FreePBX interface? Or is it just more limited compared to PJSIP? I’d appreciate any clarification or working examples from someone who has dealt with this.

Thanks in advance!

2

Are they available options in the Advanced tab for the chan_sip extensions?

3

I tried to enable it in the advanced settings, but it gives the error: “please enable DTLS for media encryption field first before enabling DTLS parameters.” The problem is that there’s no “Media encryption” parameter in the settings.