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Class Information
Number: 380/257
Name: Cryptography > Communication system using cryptography > Circuit switched network (e.g., wired telephone)
Description: Subject matter wherein protection of the transmission or reception of information occurs in a system having plural nodes joined by switched physical links (usually two-way voice).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7370193 |
Computing system being able to quickly switch between an internal and an external networks and a method thereof |
May. 6, 2008 |
| 7308101 |
Method and apparatus for transporting encrypted media streams over a wide area network |
Dec. 11, 2007 |
| 7260222 |
Shared data refining device and shared data refining method |
Aug. 21, 2007 |
| 7222242 |
Interface for facilitating facsimile transmissions via wireless communications networks |
May. 22, 2007 |
| 7184553 |
Method and system for encryption of optical signals |
Feb. 27, 2007 |
| 7171554 |
Method, computer program product and system for providing a switch user functionality in an information technological network |
Jan. 30, 2007 |
| 7142648 |
System for securing messages recorded in an IP telephony network |
Nov. 28, 2006 |
| 7130424 |
Systems and methods for utilizing an application from a native portable device within a non-native communications network |
Oct. 31, 2006 |
| 7080248 |
System providing dynamic quality of service signaling messages in a cable telephony network |
Jul. 18, 2006 |
| 6990198 |
Apparatus and method for securing communication information in CDMA communication system |
Jan. 24, 2006 |
| 6988205 |
Method and apparatus for the secure storage of audio signals |
Jan. 17, 2006 |
| 6985587 |
Method and system for calling line authenticated key distribution |
Jan. 10, 2006 |
| 6980656 |
Chaotic communication system and method using modulation of nonreactive circuit elements |
Dec. 27, 2005 |
| 6879669 |
Method and apparatus for enabling a privacy feature in a communications network |
Apr. 12, 2005 |
| 6836548 |
Communications security and trusted path method and means |
Dec. 28, 2004 |
| 6804506 |
Method mobile station and radiocommunication system for controlling safety related functions in communication handling |
Oct. 12, 2004 |
| 6792111 |
Cryptation system for packet switching networks based on digital chaotic models |
Sep. 14, 2004 |
| 6763465 |
Method of ensuring that the PC is not used to make unauthorized and surreptitious telephone calls |
Jul. 13, 2004 |
| 6741705 |
System and method for securing voice mail messages |
May. 25, 2004 |
| 6711262 |
Procedure for the control of applications stored in a subscriber identity module |
Mar. 23, 2004 |
| 6681016 |
System for transfer of secure mission data |
Jan. 20, 2004 |
| 6584562 |
Device for securing a telephone link between two subscriber sets |
Jun. 24, 2003 |
| 6574730 |
User authentication in a communications network |
Jun. 3, 2003 |
| 6560707 |
Multimedia coordination system |
May. 6, 2003 |
| 6445796 |
Automatic telephone-line disconnect system |
Sep. 3, 2002 |
| 6385724 |
Automatic object caller chain with declarative impersonation and transitive trust |
May. 7, 2002 |
| 6363150 |
Billing method for customers having IP telephony service with multiple levels of security |
Mar. 26, 2002 |
| 6275573 |
System and method for secured network access |
Aug. 14, 2001 |
| 6275588 |
Apparatus and method for performing and controlling encryption/decryption for data to be transmitted on local area network |
Aug. 14, 2001 |
| 6266418 |
Encryption and authentication methods and apparatus for securing telephone communications |
Jul. 24, 2001 |
| 6192128 |
Current-sensitive telephone-line disconnect system |
Feb. 20, 2001 |
| 6170061 |
Method and system for secure cable modem registration |
Jan. 2, 2001 |
| 6144848 |
Handheld remote computer control and methods for secured interactive real-time telecommunications |
Nov. 7, 2000 |
| 6144744 |
Method and apparatus for the secure transfer of objects between cryptographic processors |
Nov. 7, 2000 |
| 6061450 |
Alternate telephone system |
May. 9, 2000 |
| 6058187 |
Secure telecommunications data transmission |
May. 2, 2000 |
| 6052783 |
Method of loading commands in the security module of a terminal |
Apr. 18, 2000 |
| 6044158 |
Method and apparatus for communicating secure data over a telephone line using a cellular encryption apparatus |
Mar. 28, 2000 |
| 6005941 |
Method and apparatus for providing optional service functions in a private branch exchange |
Dec. 21, 1999 |
| 6005874 |
Method of processing messages in a secure communications system having a plurality of encryption procedures, and such a secure communication system |
Dec. 21, 1999 |
| 5974142 |
Secure telecommunications |
Oct. 26, 1999 |
| 5963644 |
Process and device for making secure a telephone link connecting two subscriber sets |
Oct. 5, 1999 |
| 5963643 |
Method and system for the transfer of information between two populations of persons, one nomadic and the other sedentary |
Oct. 5, 1999 |
| 5848156 |
Communication method and apparatus for carrying out cipher communications telephonically |
Dec. 8, 1998 |
| 5787154 |
Universal authentication device for use over telephone lines |
Jul. 28, 1998 |
| 5761312 |
Enhanced individual intelligent communication platform for subscribers on a telephone system |
Jun. 2, 1998 |
| 5721780 |
User-transparent security method and apparatus for authenticating user terminal access to a network |
Feb. 24, 1998 |
| 5710816 |
Method and apparatus for ensuring receipt of voicemail messages |
Jan. 20, 1998 |
| 5677954 |
Cryptical control method for personal communication |
Oct. 14, 1997 |
| 5642418 |
Satellite television system and method |
Jun. 24, 1997 |
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