Method and apparatus for determining the telephony features assigned to a telephone

Patent 5485511 Issued on January 16, 1996. Estimated Expiration Date:

September 8, 2014. 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

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Inventors

Assignee

Siemens Rolm Communications Inc.

Application

No. 303100 filed on 09/08/1994

US Classes:

379/201.01, SPECIAL SERVICES379/156, MULTI-LINE OR KEY SUBSTATION SYSTEM WITH SELECTIVE SWITCHING AND CENTRAL SWITCHING OFFICE CONNECTION379/157, With special service379/207.02Service trigger (activation or deactivation)

Examiners

Primary: Hofsass, Jeffery
Assistant: Wolinsky, Scott

International Class

H04M 003/42

Abstract

Method and apparatus for determining the telephony features assigned to a telephone connected to a central switch. By communicating with the central switch, the telephone generates a list of assigned telephony features. The list of telephony features is stored in a nonvolatile memory and displayed to the telephone user.