I recently updated my Asterisk instance to version 13.32.0. I use PJSIP. Before that, I had 13.26.0.
However, I currently notice that now, by every call, regardless if it is internal or external (using an ITSP), a log message appears:
dsp.c: Inband DTMF is not supported on codec g722. Use RFC2833
For my internal phones as well as for the ITSP connectivity, I use:
So that from my understanding out of band signalling for DTMF is preferred. Apart from that, referring to “RFC2833” is outdated since PJSIP only knows the (newer) rfc4733.
Everything works fine so far, however I am bothered by log messages indicating that there is something like a configuration error.