Thanks! Presumably this one is just the voip part and I bring my own (cordless) phone, right?

https://www.amazon.com/Obihai-OBi200-Adapter-Support-Service/dp/B07FCS1NGM/ref=sr_1_3?keywords=google+voice+voip&qid=1581531047&sr=8-3&th=1&utm_source=share&utm_medium=ios_app&utm_name=iossmf