Frankly, I find this very confusing, so not sure what is going on. To connect to the server at work in order to perform over the phone interviews, I need two tabs open in Firefox. The first is for a software dialer called Softphone, and the second tab accesses web based interview software called Confirmit CATI. Attempting to log into the dialer from CATI results in "Incorrect Extension" errors even though the extension number is correct. What I discovered today purely by chance, is that in the menu on the top left of the Firefox browser, when I have the above setup activated, there appears a new additional menu option called "Tabs sharing devices", and if I click on this, a "Microphone" labeled drop-down displays, then if I click on that, a further option is displayed regarding Permissions for the Softdial app to use my headset microphone with a "Use the microphone - Allowed" dialogue box where you can enable or disable permission for the Softdialer to use my headset microphone. What is strange is that if I open this above described microphone permissions dialogue box without changing any settings, I am able to log into my work server successfully (?) This seems like some sort of glitch or bug which is preventing a clean connection to my workplace. I would be very grateful if some one could advise me as to what I can do to fix this, or is it some sort of software bug that needs to be fixed by Mozilla or Microsoft. It's driving me nuts. If you need any more information, please let me know. Thanks in advance for any helpful advice regarding this problem.