It’s not directly what you’re looking for, but it does offer VOIP via XMPP. Voice calls are crazy cheap, like 0.1¢/min, or something (I forget, it’s so silly cheap I just don’t care).
You can use it stand-alone, or port your phone number in and now everything (calls/sms) go through XMPP. This is how I found them, as a solution to crappy SMS being tied to a physical device. Now my (crappy) SMS is on any XMPP client I use - phone, laptop, desktop, iPad, etc. And all calls are VOIP from any device, so long as the client supports it. I don’t think there’s a Windows client that yet supports voice (Gajim is the go-to for XMPP on Windows), but there’s: Android (Cheogram), Linux (Gajim) and iOS (Snikket).
Check out Jmp.chat
It’s not directly what you’re looking for, but it does offer VOIP via XMPP. Voice calls are crazy cheap, like 0.1¢/min, or something (I forget, it’s so silly cheap I just don’t care).
You can use it stand-alone, or port your phone number in and now everything (calls/sms) go through XMPP. This is how I found them, as a solution to crappy SMS being tied to a physical device. Now my (crappy) SMS is on any XMPP client I use - phone, laptop, desktop, iPad, etc. And all calls are VOIP from any device, so long as the client supports it. I don’t think there’s a Windows client that yet supports voice (Gajim is the go-to for XMPP on Windows), but there’s: Android (Cheogram), Linux (Gajim) and iOS (Snikket).