The sound quality is probably affected by the removal of the JMF framework. This was done quite some time ago. The StunFallBack should not affect sound quality.
Today I did some tests with Spark 2.6 and 2.58 and the sound quality is the same and acceptable. I have set STUN server on Openfire using only one IP address (and I have kept also enabled the default External STUN servers)
The “Mute” button is not working and “End Call” has some problems. I noticed that each 30sec there is a sound cut of about 1 sec.
I don’t know what is the spark properties. I just use spark and Openfire … I know nothing aobut it …how can I use voice call to spark clients ?
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