https://www.tccsecure.com/Products/voice-fax-data-encryption/CSD3324spf-detail.aspx https://www.tccsecure.com/Products/voice-fax-data-encryption... in the us t

https://www.tccsecure.com/Products/voice-fax-data-encryption/CSD3324spf-detail.aspx https://www.tccsecure.com/Products/voice-fax-data-encryption... in the us these are standard in scif locations.