Secure communication system
Secure entry system with acoustically coupled telephone interfac
Securely sending notification of a new incoming e-mail...
Securely sending notification of a new incoming e-mail...
Security arrangement and method for controlling access to a prot
Selection of terminal equipment in response to a data message re
Selective sending of portions of electronic content
Self contained voice and internet device with telephone...
Self-contained device using a single phone line to receive...
Self-contained distinctive ring, voice, facsimile, and...
Self-contained fax communications appliance
Self-installable and portable voice telecommunication service
Self-service checkout system utilizing portable self-checkout co
Self-service checkout system utilizing portable...
Semiconductor emulation of tube amplifiers
Sequential digital profile for processing analog signals
Serial-port powered caller identification computer interface
Series connected telephone service system
Service system for interconnecting heterogeneous communication t
Shared access to voice and information