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:
Apr. 03, 1990
Filed:
Apr. 07, 1989
Guenter E Hagedorn, Minnetonka, MN (US);
Nicollet Technologies, Inc., Eden Prairie, MN (US);
Abstract
A universal PBX-to-central office interface for standards conversion is described for supporting normally incompatible telephone equipment in PBX environments. The present invention is adapted for connection between the central office and a PBX along DID and DOD trunk lines. The present invention will capture incoming signaling and data in any one of three dialing modes (DTMF, MF and pulse dial) and convert this standard to whatever dialing mode is required by the equipment attached to the interface. The present invention will also do signaling conversion for peripheral equipment attached to PBX systems such as voice mail systems. The interface is capable of capturing extension signals transmitted from the central office to the PBX and saving them in memory for later downloading to a voice mail system to recover the extension of the dialed party after it has been forwarded to the voice mail system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile