Participating in a conference call by phone (i.e. PSTN dial-in)

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In case you don't have a data connection, but you would like to participate in a conference call, you can still dial in to the conference using provided local dial-in number and PIN.

To join a conference:

  1. Open the email invitation, containing the conference details. To access conference details when you are logged on to Circuit and you are also a member of the conversation that contains the conference you want to join, do the following:
    • On the web client and Desktop App, navigate to Details > Conference details in the conversation header.

    • On the iOS mobile client, tap and then tap Conference details > Conference details.

    • On the Android mobile client, tap and then Details > Conference details.

  2. Dial one of the numbers listed in the email (or Conference details tab) and then when prompted, enter the conference PIN.
  3. When you join the conference, your microphone is automatically muted by default, unless otherwise configured by the administrator of the domain that the conference belongs to. To unmute your microphone, press *3.
  4. To get a list of all available DTMF commands push the star key (*) twice.

    The following commands are available:

    DTMF commands

    mute or unmute your microphone


You can join a conference by PSTN dial-in only when the conversation that contains the conference has the guest access feature enabled.

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