Getting Started19PIN AuthenticationYou can sign into Skype for Business on your phone with your PIN Authentication credentials.Your system administrator provides you with your PIN Authentication credentials.To sign into Skype for Business Server using PIN Authentication method via phone userinterface:1. Press the Sign in soft key.2. Press or to select PIN Authentication.3. Enter your phone number or extension (e.g., 2216) in the Extension field.4. Enter your PIN in the Extension PIN field.5. Press the Sign in soft key.To sign into the Skype for Business Server using PIN Authentication method via web userinterface:1. Click on Account->Register.2. Select Pin Authentication from the pull-down list of Mode.3. Enter your Skype for Business user’s phone number or extension (e.g., 2216) in theExtension field.4. Enter your personal identification number (e.g., user2216) in the Pin field.5. Click Sign In to accept the change.