US3570008A - Telephone switching system - Google Patents

Telephone switching system Download PDF

Info

Publication number
US3570008A
US3570008A US334875A US3570008DA US3570008A US 3570008 A US3570008 A US 3570008A US 334875 A US334875 A US 334875A US 3570008D A US3570008D A US 3570008DA US 3570008 A US3570008 A US 3570008A
Authority
US
United States
Prior art keywords
switching system
telephone switching
control
equipments
dupliated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US334875A
Other languages
English (en)
Inventor
Randall W Downing
Harold F May
Frank F Taylor
Werner Ulrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Application granted granted Critical
Publication of US3570008A publication Critical patent/US3570008A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4812—Task transfer initiation or dispatching by interrupt, e.g. masked
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1405—Saving, restoring, recovering or retrying at machine instruction level
    • G06F11/141—Saving, restoring, recovering or retrying at machine instruction level for bus or memory accesses
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1633—Error detection by comparing the output of redundant processing systems using mutual exchange of the output between the redundant processing components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1641—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1641—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components
    • G06F11/1645—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components and the comparison itself uses redundant hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/165—Error detection by comparing the output of redundant processing systems with continued operation after detection of the error
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1654—Error detection by comparing the output of redundant processing systems where the output of only one of the redundant processing components can drive the attached hardware, e.g. memory or I/O
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1666—Error detection or correction of the data by redundancy in hardware where the redundant component is memory or memory area
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
    • G06F11/1679—Temporal synchronisation or re-synchronisation of redundant processing components at clock signal level
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
    • G06F11/1687—Temporal synchronisation or re-synchronisation of redundant processing components at event level, e.g. by interrupt or result of polling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2043—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant where the redundant components share a common memory address space
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/30018—Bit or string instructions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline, look ahead
    • G06F9/3867—Concurrent instruction execution, e.g. pipeline, look ahead using instruction pipelines
    • G06F9/3875—Pipelining a single stage, e.g. superpipelining
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4812—Task transfer initiation or dispatching by interrupt, e.g. masked
    • G06F9/4825—Interrupt from clock, e.g. time of day
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54541—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme using multi-processor systems
    • H04Q3/5455—Multi-processor, parallelism, distributed systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54575—Software application
    • H04Q3/54591—Supervision, e.g. fault localisation, traffic measurements, avoiding errors, failure recovery, monitoring, statistical analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2002—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant
    • G06F11/2007—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant using redundant communication media
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/845—Systems in which the redundancy can be transformed in increased performance
US334875A 1963-12-31 1963-12-31 Telephone switching system Expired - Lifetime US3570008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33487563A 1963-12-31 1963-12-31

Publications (1)

Publication Number Publication Date
US3570008A true US3570008A (en) 1971-03-09

Family

ID=23309246

Family Applications (1)

Application Number Title Priority Date Filing Date
US334875A Expired - Lifetime US3570008A (en) 1963-12-31 1963-12-31 Telephone switching system

Country Status (13)

Country Link
US (1) US3570008A (xx)
JP (1) JPS514062B1 (xx)
AT (7) AT271950B (xx)
BE (7) BE654497A (xx)
BR (4) BR6463331D0 (xx)
CH (7) CH476442A (xx)
DE (6) DE1474094B (xx)
DK (4) DK115124B (xx)
FR (7) FR1442298A (xx)
GB (7) GB1081812A (xx)
IL (7) IL22243A (xx)
NL (8) NL6415239A (xx)
SE (4) SE312940B (xx)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737870A (en) * 1972-04-24 1973-06-05 Ibm Status switching arrangement
US3892928A (en) * 1973-10-09 1975-07-01 Bell Telephone Labor Inc Switching system equipped with line verification apparatus
US4053751A (en) * 1976-04-28 1977-10-11 Bell Telephone Laboratories, Incorporated Adaptable exerciser for a memory system
DE2723751A1 (de) * 1976-05-28 1977-12-01 Western Electric Co Anrufverarbeitungsanordnung in fernsprechanlagen
US4309765A (en) * 1978-11-14 1982-01-05 Siemens Aktiengesellschaft Process for transmitting items of information between devices of an indirectly controlled exchange system, in particular a telephone exchange system
US4345116A (en) * 1980-12-31 1982-08-17 Bell Telephone Laboratories, Incorporated Dynamic, non-hierarchical arrangement for routing traffic
US4484030A (en) * 1982-04-19 1984-11-20 At&T Bell Laboratories Method and apparatus for identifying faulty communications circuits
US4555594A (en) * 1983-08-03 1985-11-26 At&T Bell Laboratories Telephone interexchange signaling protocol
US4565903A (en) * 1983-08-03 1986-01-21 At&T Bell Laboratories Telephone interexchange carrier selection
US4577066A (en) * 1983-08-03 1986-03-18 At&T Bell Laboratories Telephone interexchange call routing
US4660220A (en) * 1986-02-25 1987-04-21 Kraus Constantine R No answer mode for telephone systems
US4763191A (en) * 1986-03-17 1988-08-09 American Telephone And Telegraph Company, At&T Bell Laboratories Dial-up telephone network equipment for requesting an identified selection
US5289542A (en) * 1991-03-04 1994-02-22 At&T Bell Laboratories Caller identification system with encryption
US5329581A (en) * 1991-12-23 1994-07-12 At&T Bell Laboratories Target area calling system
US5444774A (en) * 1992-06-26 1995-08-22 At&T Corp. Interactive queuing sytem for call centers
US5521965A (en) * 1992-08-14 1996-05-28 Bell Atlantic Network Services, Inc. Apparatus and method for handling busy calls in telephone network
US6618474B1 (en) 1999-03-08 2003-09-09 Morris Reese Method and apparatus for providing to a customer a promotional message between ringing signals or after a call waiting tone
US20110029836A1 (en) * 2009-07-30 2011-02-03 Cleversafe, Inc. Method and apparatus for storage integrity processing based on error types in a dispersed storage network
CN111618854A (zh) * 2020-05-26 2020-09-04 中国人民解放军国防科技大学 一种安防机器人的任务分割与协同方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723975A (en) * 1971-06-28 1973-03-27 Ibm Overdue event detector
US4583198A (en) * 1981-05-06 1986-04-15 Japan Electronic Control Systems Company, Limited Computer program run-away supervisory circuit and method
DE3674678D1 (de) * 1985-08-14 1990-11-08 Siemens Ag Schaltungsanordnung fuer fernmeldeanlangen, insbesondere fernsprechvermittlungsanlagen, mit abfragestellen zyklisch ansteuernden informationsabfrageeinrichtungen.
DE3668745D1 (de) * 1985-08-14 1990-03-08 Siemens Ag Schaltungsanordnung fuer fernmeldeanlagen, insbesondere fernsprechvermittlungsanlagen, mit abfragestellen zyklisch ansteuernden informationsabfrageeinrichtungen.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1024124B (de) * 1953-03-30 1958-02-13 Lionel Roy Frank Harris Verfahren zur Auswahl einer von mehreren Leitungen in Fernmeldeanlagen, insbesondere in Fernsprechanlagen, die nach dem Zeitmultiplexverfahren arbeiten
NL231869A (xx) * 1957-10-07
BE616835A (xx) * 1961-04-25

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737870A (en) * 1972-04-24 1973-06-05 Ibm Status switching arrangement
US3892928A (en) * 1973-10-09 1975-07-01 Bell Telephone Labor Inc Switching system equipped with line verification apparatus
US4053751A (en) * 1976-04-28 1977-10-11 Bell Telephone Laboratories, Incorporated Adaptable exerciser for a memory system
DE2723751A1 (de) * 1976-05-28 1977-12-01 Western Electric Co Anrufverarbeitungsanordnung in fernsprechanlagen
US4309765A (en) * 1978-11-14 1982-01-05 Siemens Aktiengesellschaft Process for transmitting items of information between devices of an indirectly controlled exchange system, in particular a telephone exchange system
US4345116A (en) * 1980-12-31 1982-08-17 Bell Telephone Laboratories, Incorporated Dynamic, non-hierarchical arrangement for routing traffic
US4484030A (en) * 1982-04-19 1984-11-20 At&T Bell Laboratories Method and apparatus for identifying faulty communications circuits
US4555594A (en) * 1983-08-03 1985-11-26 At&T Bell Laboratories Telephone interexchange signaling protocol
US4565903A (en) * 1983-08-03 1986-01-21 At&T Bell Laboratories Telephone interexchange carrier selection
US4577066A (en) * 1983-08-03 1986-03-18 At&T Bell Laboratories Telephone interexchange call routing
US4660220A (en) * 1986-02-25 1987-04-21 Kraus Constantine R No answer mode for telephone systems
US4763191A (en) * 1986-03-17 1988-08-09 American Telephone And Telegraph Company, At&T Bell Laboratories Dial-up telephone network equipment for requesting an identified selection
US5289542A (en) * 1991-03-04 1994-02-22 At&T Bell Laboratories Caller identification system with encryption
US5329581A (en) * 1991-12-23 1994-07-12 At&T Bell Laboratories Target area calling system
US5444774A (en) * 1992-06-26 1995-08-22 At&T Corp. Interactive queuing sytem for call centers
US5521965A (en) * 1992-08-14 1996-05-28 Bell Atlantic Network Services, Inc. Apparatus and method for handling busy calls in telephone network
US6618474B1 (en) 1999-03-08 2003-09-09 Morris Reese Method and apparatus for providing to a customer a promotional message between ringing signals or after a call waiting tone
US20110029836A1 (en) * 2009-07-30 2011-02-03 Cleversafe, Inc. Method and apparatus for storage integrity processing based on error types in a dispersed storage network
US8489915B2 (en) * 2009-07-30 2013-07-16 Cleversafe, Inc. Method and apparatus for storage integrity processing based on error types in a dispersed storage network
US20130275834A1 (en) * 2009-07-30 2013-10-17 Cleversafe, Inc. Method and apparatus for storage integrity processing based on error types in a dispersed storage network
US8819516B2 (en) * 2009-07-30 2014-08-26 Cleversafe, Inc. Method and apparatus for storage integrity processing based on error types in a dispersed storage network
CN111618854A (zh) * 2020-05-26 2020-09-04 中国人民解放军国防科技大学 一种安防机器人的任务分割与协同方法

Also Published As

Publication number Publication date
AT272712B (de) 1969-07-25
CH479991A (de) 1969-10-15
FR1426970A (fr) 1966-02-04
DK136878B (da) 1977-12-05
AT273543B (de) 1969-08-11
DK136878C (xx) 1978-05-16
DE1474096A1 (de) 1970-07-09
DK114415B (da) 1969-06-30
DE1437576B2 (de) 1971-08-12
BE654496A (xx) 1965-04-16
NL140351B (nl) 1973-11-15
DK115124B (da) 1969-09-08
FR1426972A (fr) 1966-02-04
DE1437576A1 (de) 1969-02-27
DE1474095B1 (de) 1970-08-20
DE1437576C3 (de) 1972-03-16
DE1437577A1 (de) 1969-02-20
DE1437577B2 (de) 1971-11-25
CH476442A (de) 1969-07-31
NL6415235A (xx) 1965-07-02
NL6415239A (xx) 1965-07-02
DK136007B (da) 1977-07-25
NL6415236A (xx) 1965-07-02
GB1081813A (en) 1967-09-06
BR6463330D0 (pt) 1973-06-26
GB1081817A (en) 1967-09-06
FR1426971A (fr) 1966-02-04
NL6415240A (xx) 1965-07-02
GB1081814A (en) 1967-09-06
NL6415241A (xx) 1965-07-02
GB1081811A (en) 1967-09-06
NL137733C (xx)
AT271951B (de) 1969-06-25
NL6415238A (xx) 1965-07-02
CH477140A (de) 1969-08-15
DE1474094B (de) 1971-04-15
CH476441A (de) 1969-07-31
IL22241A (en) 1968-04-25
BR6463331D0 (pt) 1973-06-26
SE319926B (xx) 1970-01-26
GB1081812A (en) 1967-09-06
FR1442332A (fr) 1966-06-17
BR6463327D0 (pt) 1973-06-26
SE312940B (xx) 1969-07-28
AT271950B (de) 1969-06-25
BE654497A (xx) 1965-04-16
BE654494A (xx) 1965-04-16
IL22243A (en) 1968-04-25
BE654495A (xx) 1965-04-16
BE654493A (xx) 1965-04-16
CH479993A (de) 1969-10-15
GB1081815A (en) 1967-09-06
NL6415237A (xx) 1965-07-02
AT269518B (de) 1969-03-25
SE334392B (xx) 1971-04-26
IL22240A (en) 1968-04-25
BE657775A (xx) 1965-04-16
FR1426973A (fr) 1966-02-04
AT274057B (de) 1969-09-10
DE1474093A1 (de) 1970-07-09
BR6463328D0 (pt) 1973-06-26
NL145065B (nl) 1975-02-17
IL22239A (en) 1968-04-25
DE1474093B2 (de) 1972-09-07
IL22238A (en) 1968-04-25
FR1446309A (fr) 1966-07-22
CH479992A (de) 1969-10-15
IL22237A (en) 1968-04-25
FR1442298A (fr) 1966-06-17
IL22242A (en) 1968-04-25
SE326990B (xx) 1970-08-10
AT274056B (de) 1969-09-10
CH479990A (de) 1969-10-15
DK136007C (xx) 1978-01-09
JPS514062B1 (xx) 1976-02-07
GB1081816A (en) 1967-09-06
BE654492A (xx) 1965-04-16

Similar Documents

Publication Publication Date Title
US3570008A (en) Telephone switching system
CA663046A (en) Telephone system comprising selectors controlled by control devices common thereto
CA675990A (en) Saturable reactor control devices
CA673897A (en) Structure of saturable reactor control systems
CA628965A (en) Telephone system switching control
CA647203A (en) Line switching and control system
CA671639A (en) Telephone system including coin control circuits
CA649823A (en) Office translator arrangement for switching systems
CA676848A (en) Generation control system
CA665956A (en) Supervisory control system
CA657927A (en) Telephone systems using group selectors of the uniselector type
AU276000B2 (en) Environment control system
CA660455A (en) Controlled relief system
CA674381A (en) Regulated control system
CA651106A (en) Co-ordinate switching systems
CA657731A (en) Photoparametric control devices
CA672834A (en) Control devices
CA658774A (en) Control system
CA672317A (en) Control system
CA656743A (en) Control systems
CA670434A (en) Control systems
CA674515A (en) Exposure control
CA670214A (en) Sound control system
AU270201B2 (en) Electronic telephone switching system
CA642217A (en) Programming circuits