Yealink CP920 User Guide80Using Your Phone with PSTN AccountYou can connect optional expansion PSTN box CPN10 to extend functions of the conference phone. Calls can be madeusing the Public Switched Telephone Network (PSTN). Up to 2 cascaded PSTN Boxes can be installed to an IP con-ference phone, which allows you to experience the local five-way conference conveniently in excellent speech qualitywith PSTN.TopicsConnecting the Expansion PSTN Box CPN10Configuring the PSTN AccountSelecting the Country for PSTN UseConfiguring Flash TimeBasic Call FeaturesConferenceRecording Using a USB Flash DriveUnavailable Features for PSTNConnecting the Expansion PSTN Box CPN10Procedure1. Insert the USB plug on the expansion PSTN box into the USB port on the phone.For the information on how to connect expansion PSTN box CPN10, refer to PSTN Box CPN10 quick start guide onYealink Technical Support page.Configuring the PSTN AccountIf you have connected an expansion PSTN box CPN10 to the phone, a PSTN account is automatically registered on thephone. You can disable the account.Before You BeginThe PSTN box CPN10 is connected to the phone successfully, and the phone prompts to confirm that you want to setthe PSTN account.Procedure1. Tap OK.2. Select the desired PSTN account.3. Select the desired value from the Active Line field.4. (Optional.) Enter the string that will appear on the LCD screen in the Label field.5. Tap Save.TipYou can also configure the PSTN account at the path Menu->Settings->Advanced Settings (default password: admin) ->Accounts.Related TopicConnecting the Expansion PSTN Box CPN10
