Multiplex communications – Wide area network – Packet switching
Patent
1990-04-03
1991-06-11
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 582, 3701101, 379 93, 379 94, 379112, 379158, 379211, H04Q 1104, H04J 312, H04M 1100
Patent
active
050238680
ABSTRACT:
A computer connected to an ISDN switch via an ISDN digital subscriber line, has shared cell appearances with a number of telephone stations connected to the switch and on the basis of shared call appearance associated messages from the switch, controls the forwarding of calls directed to the stations with which it has a shared call appearance. The associated messages are interpreted by the computer, which generates station status information. The computer responds to messages associated with predefined ones of the stations to select an alternate destination for the call and to transmit ISDN messages to the switch to cause the call to be forwarded to the selected alternate destination. Calls may be forwarded depending on call type, called number or other criteria. The computer responds to calls forwarded to it in the event that an associated station is busy and connects a holding party to the principal phone when the principal phone is no longer busy. The computer may be connected simultaneously to several ISDN switches via ISDN subscriber lines to receive shared call appearance associated messages from the several switching systems and forward calls for a telephone station connected to one switch, to a telephone station connected to another switch.
In order to handle voice message recording, an ISDN line shares the directory numbers of the analog lines connecting a switch to a message recording system. The ISDN line then receives all messages destined for the lines connected to the message switch. The ISDN line is connected to an interface for converting between ISDN messages and data messages for controlling the message recording system. Avdantageously, this permits an ISDN switch to provide an inexpensive interface to a voice message system.
REFERENCES:
patent: 4048452 (1977-09-01), Oehring et al.
patent: 4436962 (1984-03-01), Davis et al.
patent: 4436963 (1984-03-01), Cottrell et al.
patent: 4476349 (1984-10-01), Cottrell et al.
patent: 4559416 (1985-12-01), Theis et al.
patent: 4592048 (1986-05-01), Beckner et al.
patent: 4599493 (1986-07-01), Cave
patent: 4653085 (1987-03-01), Chan et al.
patent: 4656623 (1987-04-01), Dalby, Jr. et al.
patent: 4661975 (1987-04-01), Brecher
patent: 4694483 (1987-09-01), Cheung
patent: 4712230 (1987-12-01), Rice et al.
patent: 4723273 (1988-02-01), Diesel et al.
patent: 4734931 (1988-03-01), Bourg et al.
patent: 4739509 (1988-04-01), Bourg
patent: 4741026 (1988-04-01), Baxter et al.
patent: 4748656 (1988-05-01), Gibbs et al.
patent: 4757529 (1988-07-01), Glapa et al.
patent: 4763353 (1988-08-01), Canale et al.
patent: 4876717 (1989-10-01), Barron et al.
patent: 4922484 (1990-05-01), Yoshida et al.
AT&T, "Call Management System (CMS)", PM-4495 F/HG, 1987, brochure.
AT&T, "5ESS.TM. Switch ISDN Basic Rate Interface Specification 5E4 Generic Program", AT&T 5D5-900-301, 1985.
Strathmeyer, C., "Voice/Data Integration: An Applications Perspective", vol. 25, No. 12, Dec., 1987, IEEE Communications Magazine, pp. 30-35.
Davidson Wayne A.
Winter Diana S.
AT&T Bell Laboratories
Hsu Alpus H.
Olms Douglas W.
Ulrich Werner
Visserman Peter
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