| Conference Calls | 262. Enable Block calls with no caller ID.Note: If your phone is set as a common area phone, navigate to > Settings > DeviceSettings > Calls (Admin only, default password: admin) to enable Block calls with no callerID.Anonymous CallYou can hide your phone number when dialing people who are outside of Microsoft Teams.Procedure1. Navigate to > Settings > Calling.2. Turn on Hide your phone number when dialing people who are outside of Microsoft Teams.Note: If your phone is set as a common area phone, navigate to > Settings > DeviceSettings > Calls (Admin only, default password: admin) to enable Hide your phone numberwhen dialing people who are outside of Microsoft Teams.Conference CallsThis chapter provides basic operating instructions about initiating and managing a conference call.• Initiating a Conference by Calling Multiple Contacts• Initiating a Conference Call by Inviting Other Contacts• Initiating a Conference Call From Call History• Managing the Conference Participants• Adding Participants to a Conference Call• Leaving the ConferenceInitiating a Conference by Calling Multiple ContactsProcedure1. Tap from the Calls screen.2. Enter the contact information to search and then select the desired contact.You can add multiple contacts.3. Tap .Initiating a Conference Call by Inviting Other ContactsYou can initiate a conference call by inviting contacts to join the active call.Procedure1. During a call, tap .