05805587 is referenced by 540 patents and cites 9 patents.

A facility is provided to alert a subscriber whose telephone station set is connected to the Internet of a waiting call via the Internet connection. Specifically, a call that is waiting may be forwarded via the Public Switched Network to a services platform, which, in turn, establishes a connection to the subscriber using the Internet. The platform then notifies the subscriber of the waiting call via the Internet connection. The platform may then forward the telephone call to the subscriber via the Internet responsive to a subscriber request to do so with interrupting the subscriber's Internet connection.

Title
Call notification feature for a telephone line connected to the internet
Application Number
8/562678
Publication Number
5805587
Application Date
November 27, 1995
Publication Date
September 8, 1998
Inventor
Thomas Leonard Russell Jr
Colts Neck
NJ, US
John H Norris
Highlands
NJ, US
Agent
Michele L Conover
Thomas A Restaino
Assignee
AT&T
NJ, US
IPC
H04M 3/50
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