I am a free-lancer. I  like to work on temporally assignments. My specialty is Mobile telephone networks, Fixed telephone networks, Voice Over IP interworking with Telephone network and Wireless network features. I write technical documents on the use of standard and not standards protocols to provided network provided features. Some of my work is well documented in ITU, ETSI, and in private companies such as, AT&T, Nortel, GTE and Motorola to name a few.

UNITED STATES PATENTS

 

1.     Title: Backup power supply at subscriber terminal, Jan. 8, 1991, Patent Number: 4984267

 

2.  Title: Apparatus and accompanying methods for preventing toll fraud through use of centralized caller voice verification, Mar. 26, 1996, Patent Number: 5502759

 

3.       Title: Electronic switch connected to intelligent peripheral while permitting call processing of dialed digits, Jul. 21, 1998, Patent Number: 5784437

 

4.       Title: Enhanced efficient telephone number portability, Feb. 2, 1999, Patent Number: 5867569

 

5.       Title: Directory number portability in telephone networks, Feb. 2, 1999, Patent Number: 5867570

 

6.   Title: Redirection of calls to ported directory numbers in telephone networks, Mar. 9, 1999,

     Patent Number: 5881145

 

7.    Title: Method and system for extending the directory number of a terminal, Jul. 25, 2000,

      Patent Number: 6094478

 

8.     Title: Intelligent network with alternate routing of signaling messages, and method of operating such network,   Oct. 24, 2000, Patent Number: 6137806

 

9.    Title: Method and apparatus for routing emergency services calls in an intelligent network, Dec. 18, 2001, Patent Number: US 6332022 B1

 

10.    Title: Geographically distributed telephony, Jun. 25, 2002, Patent Number: US 6411703 B1

 

11.  Title: Method and apparatus for routing emergency services calls in an intelligent network, Apr. 13, 2004,

      Patent   Number: US 6721395 B2