Method and apparatus for informing active subscriber of disconnection of held subscriber in call-waiting service
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 23, 1996
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jun 13, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When a subscriber A provided with a call-waiting service and connected to a subscriber B is called by another subscriber C and when the subscriber A responds to a call-waiting tone, the subscriber A is connected to the subscriber C and the subscriber B is held according to a procedure of the call-waiting service. If the subscriber B replaces the handset, a clearing intrusion tone (CIT) is sent to the subscriber A before changing a three-way connection to a connection between the subscriber A and the subscriber C, and the subscriber A notices that the held subscriber B is disconnected before attempting to communicate with the subscriber B and without having to rely on a busy signal.
First Claim
Family
International Classification(s)
Cited Art Landscape
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