Using Zoom Phone on a computer on your home network, or on a cell phone using "WiFi calling" typically works without issue. However, if you are experiencing choppiness in your audio, it may be there is not enough Internet bandwidth available for the Zoom application. If there is more than one user/device using the network, try turning off the other devices to see if that corrects the issue. See https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0060748 for additional information about Zoom minimum system requirements.