Hello,
How can, as a moderator, mute and unmute all the lines of the participants?
Hello mee,
welcome to the Polycom Community.
The phone itself has no built in facility to manage a internal conference and mute individual lines.
What you most likely are talking about is the ability to dial into a bridge and be a chair person and use star ( * ) or hash/pound ( # ) codes to control the meeting.
You meeting provider would need to supply these to you.
As the phone can only hold a 3 party conference it should not be to difficult to advise the two other parties to mute their end.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
If official support is required please check how to phone or open a case here
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