家里还有Landline吗？Google Voice on OBi200 也算。。。

到古董商店搞个56Kbps V.92 的，USB接头的，插到电脑上另一头连到Landline就能收发Fax了

https://learn.microsoft.com/en-us/answers/questions/2186011/use-windows-fax-and-scan-to-send-and-receive-fax-f

https://www.amazon.com/StarTech-com-56K-USB-Dial-up-Modem/dp/B01MYLE06I