Jabber Parameter 12.6/12.7 - mute all sounds

Jabber Parameter 12.6/12.7 - mute all sounds when i a meeting

We have a customer request to "mute all sounds when in a meeting" .
There is the same configuration on the jabber gui for "mute all sounds when in a call" .

Today it seams that we haven't the possibility to manage that configuration option on jabber. At the moment each jabber client have to change this configuration on the gui manually. It would be nice when there is a possiblity to change that configuration via the jabber config.
The TAC engineer haven't found a solution for that. He provides me the paramter "MuteAudioByDefault" but that is something completly different.

MuteAudioByDefault
Applies to all Cisco Jabber clients. Specifies if the microphone is automatically muted for all Jabber calls.

false (default)â€”Your users microphone isn't muted for Jabber calls.
trueâ€”Your users microphone is muted for Jabber calls.

Reference TAC:
SR 68735069

Thanks and best Regards
Thiago