Yealink CP920 User Guide82ConferenceAs one PSTN account can only support one call. To set up a conference, you need to activate a hook flash. A hookflash is a quick off-hook/on-hook/off-hook cycle (just like picking up a handset, laying the handset down on the hand-set cradle, and then picking it up again). When you activate a hook flash, the message “Flashing” displays on thescreen for about one second, as shown below:Then the active call will be placed on hold, you are allowed to place a new call and connect three parties in a con-ference. You cannot view the last participant in the conference call.You can also set up a conference with more than two parties when you have multiple accounts on the phone. You canview and manage each participant in the conference call.NoteThe way to set up a conference call using hook flash may be different for different gateways/PBX servers.Procedure1. Place a call to the first party.2. When the first party answers the call, tap Flash to activate a hook flash.The message “Flashing” displays on the screen for about one second and the active call is placed on hold.3. Enter the number of the second party.4. When the second party answers the call, tap Flash again to join two parties in the conference.To remove this party from the conference call, tap the Flash soft key.5. Enter the number of the second party.6. To add an additional party to the conference, tap the Conf soft key (another account is needed).7. Enter the number of the new party, and then tap Send or .8. Tap Conf when the party answers.Recording Using a USB Flash DriveYou can use the recording feature when connecting the PSTN box CPN10. But you need to connect the USB flash driveto the USB port on the PSTN box CPN10 in advance.Related TopicsRecording Using a USB Flash DriveConnecting the Expansion PSTN Box CPN10Unavailable Features for PSTNThe following lists the main features not available for PSTN:
