U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"

The Quarterly Review ; March edition, 1825

Newsletter  PatentStorm News

Make the Most of PatentStorm

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest patents by subscribing to an RSS feed.

Got questions? Ask a Patent Expert!

Registered users: Manage your profile, comments and alerts.

 

US Patent 5222130 - Message arrangement and method for implementing a digital telephone system

US Patent Issued on June 22, 1993
Estimated Patent Expiration Date: Icon_subject November 19, 2010Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
loading...


View Patent Images (PDF)
(Registered users only)

Abstract

A message arrangement and method for interfacing a digital telephone Digital system including a Digital Facility Line Card (DFLC) that connects a user operated Telephone Instrument (DTI) to a stored program operated digital Central Office (CO) system. The message arrangement comprises, a DFLC message processor that generates and transmits to the DTI control messages in response to report messages transmitted by the DTI, following a user activated DTI event. The control messages provide the user with visual and aural DTI operating information. The DFLC message processor further generates and transmits to a CO system central controller, device report messages requesting access to, and network services from the CO system, responsive to call processing report messages from the DTI. The CO system central controller sends device control messages to the DFLC which operates in accordance with the received device control messages to generate and transmit to the DTI, DTI control messages. The DTI control messages instruct the DTI to provide the user with operating information and to collect call processing data from the DTI, for transmission to the DFLC message processor. The DFLC message processor translates the call processing data and generates device report messages, which are transmitted to the CO system.

Inventors

Application

No. 615523 filed on 11/19/1990

US Classes:

379/399.02, Circuitry to provide a coder and decoder function379/219, PLURAL EXCHANGE NETWORK OR INTERCONNECTION379/225, Multi-PBX interconnection379/229, Interexchange signalling379/231Central office-to-PBX signalling

Field of Search

379/398, LINE EQUALIZATION OR IMPEDANCE MATCHING379/219, PLURAL EXCHANGE NETWORK OR INTERCONNECTION379/225, Multi-PBX interconnection379/227, With an automatic exchange379/228, Having signalling to operator379/229, Interexchange signalling379/230, Signalling path distinct from trunk (e.g., CCIS)379/231, Central office-to-PBX signalling379/232PBX trunk groups

Examiners

Primary: Dwyer, James L.
Assistant: Shehata, M.

Attorney, Agent or Firm

US Patent References

3920912, 4090034, Usage-sensitive billing arrangement for private branch exchange subscribers
Issued on: 05/16/1978
Inventor: Moylan
4492321, Apparatus for dispensing toner particles and sealing the storage chamber thereof
Issued on: 01/08/1985
Inventor: Zoltner
4499336, Common channel interoffice signaling system
Issued on: 02/12/1985
Inventor: Krikor ,   et al.
4661974, Automatic route selection of a private telephone network path on the basis of a public telephone network number
Issued on: 04/28/1987
Inventor: Bales ,   et al.
5042062, Method and apparatus for providing real-time switching of high bandwidth transmission channels
Issued on: 08/20/1991
Inventor: Lee, et al.
5046088, Converter for in-band routing and/or origination information
Issued on: 09/03/1991
Inventor: Margulies
5086461, Apparatus and method for providing existing 1ESS and 1AESS telephone switching equipment with the capability of using the SS7 protocol
Issued on: 02/04/1992
Inventor: Thorn, et al.
5103449PBX transparent ANI and DNIS using VRU
Issued on: 04/07/1992
Inventor: Jolissaint

International Class

H04M 007/00

Comments

No comments for this page
 
 
Forgot password?
Register here