MusicOnhold Alone

I have a problem, I use asterisk 15.4.1.
when I send call to provider sometimes asterisk start musiconlod for 2 -3 seconds and stop.

In old asterisk version we can set ignoresdpversion and solve that, but in Pjsip how can I set it?

Why happens this, I did analize sip messages but don’t have any abnormal

ignoresdpversion is a workaround for a broken SIP peer. If you can fin nothing wrong in the SIP (strictly the SDP) it would not help.