Nec Infrontia Corporation

Daisuke Yumita

Eiichi Taniguchi

Tadamine Toh

Masaru Kunii

Jun Tamatsu

Masafuku Akatsu

Naoki Ozawa

Kouji Takeuchi

Tomotaka Sano

Telephone

Disclosed is a telephone to be installed in a house or an office and capable of effectively preventing leakage of data stored in or unauthorized use of the telephone. For this end, a security buttonis provided for inhibiting the use of all or a part of the stored data in or functions of the telephone. The security buttonenables the user to set the security condition by a single push-down operation or choose desired security levels by continuous operations. An LED may be installed in the security buttonto emit light in different colors or patterns for respective security levels.

Telephone, telephone security control method, telephone security control program and program recording medium

Growing community of inventors

Kanagawa, Japan

Daisuke Yumita