Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2002-11-19
2008-09-23
Duong, Frank (Department: 2616)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S395540, C370S401000, C379S032010, C379S035000
Reexamination Certificate
active
07428233
ABSTRACT:
Surveillance of IP telephony may be performed through the use of conventional telephone equipment, according to principles of the invention while preventing giving indication to the monitored phone by alerting the user of the monitoring phone to such surveillance use prior to pick up by an agent for engagement of the monitoring phone in response to the alert. Such alerts may assume many forms such as ringing, visual indicators, data readouts, activating ancillary equipment, various flags, etc. This alert prior to surveillance is distinct from alerts used for normal non-surveillance calls, which the monitoring phone is capable of receiving.
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Kung Fen-Chung
Russell Jesse Eugene
Sankalia Anish
Wang Spencer C.
AT&T Corp.
Banner & Witcoff , Ltd.
Duong Frank
LandOfFree
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