When a conference call is locked, no further participants can dial into the conference room, even if they enter a valid room number and PIN.
Being able to lock the conference to any further participants can be particularly useful for discussing sensitive or confidential information. You can have your discussion safe in the knowledge that no unauthorised participants can dial in and hear what's being said.
How to lock your conference call
To lock a conference room you will need to have dialled in using the Moderator PIN. Only Moderators can access the lock/unlock feature.
Once the conference has started and you are happy that everyone has joined, you can press * 4 on your telephone keypad to lock the conference room.
You can unlock the conference room by pressing *4 again.
All participants will hear an announcement confirming when you have locked or unlocked the conference room.
Telephone keypad controls
As well as locking the conference room, telephone keypad controls allow conference organisers to have much more control over their conferences, including being able to mute participants and hear how many participants are currently dialled in.