SIPSettings > ChanSIP > enable jitter

I’m trying to enable jitter buffer:

jitter buffer: Enabled
force jb: Yes
Implementation: Adaptive
jb logging: Disable
jb size: 300 jbmaxsize 500 jbresyncthreshold

Submit change then Apply and I get this error:

Error!closeError: Did not receive valid response from serverXHR response code: 0 XHR responseText: undefined jQuery status: timeout

cat /etc/schmooze/pbx-version

Go to any other page and hit apply changes and you will be fine