https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
Encrypted Security Phone

Encrypted Security Phone

Everpeace Technology Manufacturing Com. Ltd
Region: Hong Kong
Update: 03/26/2009
Key Specifications
Features:
* Anti-phone tapping 
* 743 million cryptographic codes 
* Encryption and scrambling 
* Caller ID 
* Worldwide PSTN compatible 
* Rich telephone functions
https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions