4 ms·You can already make calls over data on both sendhub.com and on the app. Is it not working for you?by ashrust 14y agoYou can already make calls over data on both sendhub.com and on the app. Is it not working for you?msumpter 14y agoSIP would always be ideal since we could integrate our existing SIP handsets with your service for voice calling.jaytaylor 14y agoThanks, we'll definitely investigate adding support for this.