Re: "Secure Voice"

Anybody know about the voice capabilities of the ZyXel class modems? I own a ZyXel 1496E which can digitize voice and also transmit voice data that has been digitized. It would be easy to first encript this stream before sending it out. The 1496E+ also support CELP (or is it (CLEP?) but that one cost about $400. (The 1496E is around $300) It also is a 14.4 K baud modem and does FAX.