Hakim Naim Mehmood

US Patent:

8311218, Nov 13, 2012

Filed:

Oct 29, 2009

Appl. No.:

12/608597

Inventors:

Hakim N. Mehmood - Broomfield CO, US
Mark L. Hendrickson - Lafayette CO, US
Cullen F. Jennings - Santa Cruz CA, US
Jonathan D. Rosenberg - Freehold NJ, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 9/00
H04L 9/32
G06F 1/04

US Classification:

380 44, 713168, 713171, 713503

Abstract:

A system may generate from a first value, based on rounding information, a first security key that matches a second security key whenever the first value and a second value from which the second security key is generated differ by less than a non-zero predetermined amount. The second security key may be generated from the second value rounded to a multiple of a rounding interval that is nearest to the second value. The rounding information may include a rounding direction indication. The rounding direction indication may indicate the direction in which the second value is rounded to the multiple of the rounding interval nearest to the second value.

US Patent:

20090323677, Dec 31, 2009

Filed:

Jun 30, 2009

Appl. No.:

12/495615

Inventors:

Hakim N. Mehmood - Broomfield CO, US
Mark L. Hendrickson - Lafayette CO, US
Jonathan David Rosenberg - Freehold NJ, US
Cullen F. Jennings - Santa Cruz CA, US

Assignee:

CISCO TECHNOLOGY, INC. - San Jose CA

International Classification:

H04L 12/66

US Classification:

370352

Abstract:

In one embodiment, an apparatus may receive at least one call attribute of a public switched telephone network (PSTN) call initiated to a destination telephone number. The apparatus may verify a destination Voice-over-Internet-Protocol (VoIP) call agent for the destination telephone number based on demonstrated knowledge of the PSTN call. The apparatus may transmit an indication the destination VoIP call agent is verified for the destination telephone number.

US Patent:

20100002687, Jan 7, 2010

Filed:

Jun 30, 2009

Appl. No.:

12/495639

Inventors:

Jonathan David Rosenberg - Freehold NJ, US
Cullen F. Jennings - Santa Cruz CA, US
Hakim N. Mehmood - Broomfield CO, US
Mark L. Hendrickson - Lafayette CO, US
John D. Alexander - Richardson TX, US

Assignee:

CISCO TECHNOLOGY, INC. - San Jose CA

International Classification:

H04L 12/66

US Classification:

370352

Abstract:

A system for verifying VoIP call routing information. The system may include an apparatus integrated with a private branch exchange (PBX). The apparatus may store at least one call attribute of a public switched telephone network (PSTN) call initiated to a destination telephone number. The apparatus may verify a destination Voice-over-Internet-Protocol (VoIP) call agent for the destination telephone number based on demonstrated knowledge of the PSTN call. The apparatus may route a new call either over a VoIP network to the destination VoIP call agent or over a circuit switched network based on whether the destination VoIP call agent is verified for the destination telephone number.