[webrtc-pc] Section 10.3: mute signal

aboba has just created a new issue for 
https://github.com/w3c/webrtc-pc:

== Section 10.3: mute signal  ==
In Section 10.3 it says: 

"ISSUE 4
The mute signal mentioned in the previous paragraph is yet to be 
defined."

Please view or discuss this issue at 
https://github.com/w3c/webrtc-pc/issues/1051 using your GitHub account