The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2004
Filed:
Dec. 15, 2000
Applicant:
Inventors:
Young U. Huh, Naperville, IL (US);
Mahmoud R. Sherif, Whippany, NJ (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 1/266 ;
U.S. Cl.
CPC ...
H04L 1/266 ;
Abstract
A wireless communication method and arrangement that facilitates and allows a user at one end to send dual tone multiple frequency characters from one wireless unit to a second wireless unit completely within tandem free operation mode without changing to tandem operation mode. By remaining in tandem free operating mode during dual tone multiple frequency signaling the delay and distortion of the CODECs used in tandem operation mode is avoided, and the real possibility of missing bursts of dual frequency multiple frequency characters that exists presently because of existing timing requirements is removed.