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:
May. 01, 2001
Filed:
Mar. 06, 1998
Applicant:
Inventors:
Bruce Levens, Natick, MA (US);
Paul R. Kerr, Natick, MA (US);
William S. Hoge, Boston, MA (US);
Daniel F. Daly, Holbrook, MA (US);
Assignee:
Natural MicroSystems Corporation, Framingham, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 3/12 ;
U.S. Cl.
CPC ...
H04J 3/12 ;
Abstract
A method of facilitating telephony communications over a packet-switched network includes detecting signaling tones in an audio stream and blocking them from the stream in response to the detecting. After the blocking, the audio stream is sent over an undependable channel in the packet-switched network. The detected signaling tones can be sent over a dependable channel instead of the undependable audio channel.