Dial into Definition 1 of 2Pro Tip 1/3Tech Connection Use 'dial into' for joining digital events like webinars using phones or computers. I need to dial into the online training session. Pro Tip 2/3Access Codes Remember that 'dial into' often requires an access or passcode when joining a call. Do you have the code to dial into the conference call? Pro Tip 3/3Business Context 'Dial into' is commonly used in business or formal settings, not casual conversations. All staff must dial into the monthly meeting.