Automated access facilities for use with key telephone systems

Patent 4850012 Issued on July 18, 1989. Estimated Expiration Date:

December 16, 2007. Estimated 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.

Abstract Claims Description Full Text

Patent References

Keyless and indicatorless local telephone switching system
Patent #: 4376875
Issued on: 03/15/1983
Inventor: Beirne

PBX Intercept and caller interactive attendant bypass system
Patent #: 4696028
Issued on: 09/22/1987
Inventor: Morganstein , et al.

Communication system with voice announcement means
Patent #: 4720848
Issued on: 01/19/1988
Inventor: Akiyama

Automatic telephone answering device with paging function
Patent #: 4737979
Issued on: 04/12/1988
Inventor: Hashimoto

PBX telephone call control system
Patent #: 4747124
Issued on: 05/24/1988
Inventor: Ladd

PBX telephone call control system Patent #: 4783796
Issued on: 11/08/1988
Inventor: Ladd

Inventors

Assignee

Dytel Corporation

Application

No. 07/133318 filed on 12/16/1987

US Classes:

379/157, With special service379/164, Line status indication or call alerting379/217.01, Audible paging379/373.05, Directing incoming call to local appliance379/88.24, By generated tone379/911DISTINCTIVE RINGING

Examiners

Primary: Schreyer, Stafford D.

Attorney, Agent or Firm

Richards, Harris, Medlock & Andrews

International Classes

H04M 9/00 (20060101)
H04M 3/527 (20060101)
H04M 3/50 (20060101)

Abstract

A call processor (32) for intercepting incoming calls to a key telephone system (10) and returning a message to a calling party. A digital message storage unit (48) stores messages associating called parties with respective pseudo-telephone numbers so the calling party can input information identifying a desired called party. A CPU (50) of the call processor (32) references a look-up table (52) with hte pseudo-telephone number input by the calling party to select and transmit a message via an intercom line (36) to the key telephone system (10). The message carried by the intercom line (36) broadcasts a message relating to the identity of the called party as well as the line to utilize.