Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Patent
1997-09-12
2000-06-20
Marcelo, Melvin
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
370356, H04L 1256, H04L 1264
Patent
active
060785810
ABSTRACT:
A telephony call-waiting system for clients having a computer with a video display unit (PCNDU) and a public-switched telephony network (PSTN) telephone connected to the PSTN by a single line, keeps a status indication of the client's Internet connection status and, during periods of time the PC/VDU is connected to the Internet, alerts the client by an alert signal over the Internet connection of any waiting PSTN calls. In a preferred embodiment the client's PC/VDU is adapted to provide an audio and/or visual alert event when an alert signal is received, and to provide for a user-initiated response to an alert, accepting or rejecting a call. In the event a call is accepted, provision is made for connecting the accepted call to the client's PC/VDU as an IP call. In some embodiments several calls may be dealt with at the PC/VDU, and features are provided such as caller-ID on the client's VDU. Several ways of accomplishing the call-waiting system are taught.
REFERENCES:
patent: 5805587 (1998-09-01), Norris et al.
patent: 5809128 (1998-09-01), McMullin
Colin Low, "The Internet Telephony Red Herring", IEEE, pp. 72-80, May 1996.
J.D. Smith, "An Overview To Computer-Telecommunications Integration (CTI)", Telecommunications, Conference Publication No. 404, IEE, pp. 44-48, Mar. 1995.
Herman D'Hooge, "The Communicating PC", IEEE Communications Magazine, pp. 36-42, Apr. 1996.
Michael Katz, "When CTI meets the Internet", Telecommunications, Dedham, vol. 31, Issue 7, Horizon House Publications, pp. 1-6, Jul. 1997.
Shtivelman Yuri
Turovsky Oleg
Boys Donald R.
Genesys Telecommunications Laboratories , Inc.
Marcelo Melvin
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