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Publication numberUS3570008 A
Publication typeGrant
Publication dateMar 9, 1971
Filing dateDec 31, 1963
Priority dateDec 31, 1963
Also published asDE1437576A1, DE1437576B, DE1437576B2, DE1437576C3, DE1437577A1, DE1437577B, DE1437577B2, DE1474093A1, DE1474093B, DE1474093B2, DE1474094B, DE1474095B, DE1474096A1
Publication numberUS 3570008 A, US 3570008A, US-A-3570008, US3570008 A, US3570008A
InventorsRandall W Downing, Harold F May, Frank F Taylor, Werner Ulrich
Original AssigneeBell Telephone Labor Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Telephone switching system
US 3570008 A
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3737870 *Apr 24, 1972Jun 5, 1973IbmStatus switching arrangement
US3892928 *Oct 9, 1973Jul 1, 1975Bell Telephone Labor IncSwitching system equipped with line verification apparatus
US4053751 *Apr 28, 1976Oct 11, 1977Bell Telephone Laboratories, IncorporatedAdaptable exerciser for a memory system
US4309765 *Nov 1, 1979Jan 5, 1982Siemens AktiengesellschaftProcess for transmitting items of information between devices of an indirectly controlled exchange system, in particular a telephone exchange system
US4345116 *Dec 31, 1980Aug 17, 1982Bell Telephone Laboratories, IncorporatedDynamic, non-hierarchical arrangement for routing traffic
US4484030 *Apr 19, 1982Nov 20, 1984At&T Bell LaboratoriesMethod and apparatus for identifying faulty communications circuits
US4555594 *Aug 3, 1983Nov 26, 1985At&T Bell LaboratoriesTelephone interexchange signaling protocol
US4565903 *Aug 3, 1983Jan 21, 1986At&T Bell LaboratoriesTelephone interexchange carrier selection
US4577066 *Aug 3, 1983Mar 18, 1986At&T Bell LaboratoriesTelephone interexchange call routing
US4660220 *Feb 25, 1986Apr 21, 1987Kraus Constantine RNo answer mode for telephone systems
US4763191 *Mar 17, 1986Aug 9, 1988American Telephone And Telegraph Company, At&T Bell LaboratoriesDial-up telephone network equipment for requesting an identified selection
US5289542 *Mar 4, 1991Feb 22, 1994At&T Bell LaboratoriesCaller identification system with encryption
US5329581 *Dec 23, 1991Jul 12, 1994At&T Bell LaboratoriesTarget area calling system
US5444774 *Jan 3, 1995Aug 22, 1995At&T Corp.Interactive queuing sytem for call centers
US5521965 *Dec 12, 1994May 28, 1996Bell Atlantic Network Services, Inc.Apparatus and method for handling busy calls in telephone network
US6618474Mar 8, 2000Sep 9, 2003Morris ReeseMethod and apparatus for providing to a customer a promotional message between ringing signals or after a call waiting tone
US8489915 *Apr 26, 2010Jul 16, 2013Cleversafe, Inc.Method and apparatus for storage integrity processing based on error types in a dispersed storage network
US20110029836 *Apr 26, 2010Feb 3, 2011Cleversafe, Inc.Method and apparatus for storage integrity processing based on error types in a dispersed storage network
US20130275834 *Jun 12, 2013Oct 17, 2013Cleversafe, Inc.Method and apparatus for storage integrity processing based on error types in a dispersed storage network
DE2723751A1 *May 26, 1977Dec 1, 1977Western Electric CoAnrufverarbeitungsanordnung in fernsprechanlagen
U.S. Classification379/219, 712/E09.16, 379/242, 714/E11.63, 714/E11.71, 379/280, 712/E09.19, 712/E09.65, 714/E11.3
International ClassificationG06F11/00, G06F9/308, G06F11/20, H04Q3/545, G06F9/38, G06F15/16, G06F9/30, G06F11/16, G06F9/46, G06F17/00, G06F9/48
Cooperative ClassificationG06F11/165, G06F11/1666, G06F11/141, G06F9/30018, G06F9/4812, G06F11/2033, G06F15/16, G06F9/30, G06F9/3875, G06F11/1679, G06F17/00, G06F11/20, G06F11/0757, G06F11/1076, G06F11/1008, G06F11/1629, H04Q3/5455, G06F2201/845, G06F9/4825, H04Q3/54591, G06F11/1654, G06F11/1633, G06F11/2007, G06F11/1645, G06F11/2043, G06F11/1641, G06F11/1687, G06F11/00, G06F9/46
European ClassificationG06F11/16M, G06F11/20P2S, G06F11/14A2M, G06F11/10M, G06F11/16C6R, G06F11/16T2, G06F11/20P10, G06F11/16C6, G06F11/16T6, G06F11/16C, G06F9/30A1B, G06F11/07P2A1, G06F11/10R, H04Q3/545M1, G06F9/30, G06F9/48C2T, G06F15/16, H04Q3/545T2, G06F11/20, G06F17/00, G06F11/00, G06F9/46, G06F9/38P6, G06F9/48C2, G06F11/16C2, G06F11/16C8, G06F11/16C12