I’m looking for a good soft phone. I’ve downloaded and tried a few, but the phones I’ve been able to find for free only use GSM. Does anyone know of a download for a free soft phone using G711u, G711a, SPX etc.?
I’m not sure what those numbers mean, but I gather if I can have the signal carried by any one of those systems I’ll get a better reception than I am with GSM.
Thanks to all you techophiles in advance.