Listening to your voicemail with Webex (Phone) To access your voicemail box pick up your handset and dial extension 4342. Enter your PIN and press the # key. If you do not remember your PIN, please see the Changing your voicemail PIN with Webex solutions article. To access your voicemail box, press 1. To change or update your Voicemail greeting, press 3. To change your voicemail PIN, press 8. To disconnect, hang up or press 9.