To successfully make an outbound call you need to make sure that the lead has its assigned campaign. Another way to check is to make sure that you’re connected to a stable internet connection as the CRM requires internet in making outbound calls. Also, it is very important that you allow the microphone access in your browser and you selected the correct headset or hardware you use for speakers and microphone. Or you can email us at support@resimpli.com for further assistance.