Asterisk v15 documentation states that JITTERBUFFER function is used to “add a Jitterbuffer to the Read side of the channel”. Take this dialplan example:
[from-pstn] exten => 1234,1,Set(JITTERBUFFER(adaptive)=default) exten => 1234,n,Dial(PJSIP/1234)
It is safe to assume that jitter buffer is applied to the calling channel. What about the answering channel (PJSIP/1234 in this case)? Is jitter buffer applied to it as well? If not, how to apply it?