Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M3/00—Automatic or semi-automatic exchanges
  • H04M3/08—Indicating faults in circuits or apparatus
  • H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M3/00—Automatic or semi-automatic exchanges
  • H04M3/22—Arrangements for supervision, monitoring or testing
  • H04M3/36—Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks
• • 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
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
  • H04M2201/08—Magnetic elements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
  • H04M2201/10—Logic circuits
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/1302—Relay switches
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
  • H04Q2213/1304—Coordinate switches, crossbar, 4/2 with relays, coupling field

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Computer Networks & Wireless Communication (AREA)
• Telephonic Communication Services (AREA)
• Sub-Exchange Stations And Push- Button Telephones (AREA)
• Exchange Systems With Centralized Control (AREA)
• Medicines Containing Plant Substances (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Cosmetics (AREA)
• Fax Reproducing Arrangements (AREA)
• Measurement Of Unknown Time Intervals (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23333487

Family Applications (1)

Country Status (8)

Families Citing this family (29)

Family Cites Families (5)

• 0
  • BE BE526957D patent/BE526957A/xx unknown
• 1953
  • 1953-03-05 US US340471A patent/US2723311A/en not_active Expired - Lifetime
  • 1953-03-05 US US340472A patent/US2782256A/en not_active Expired - Lifetime
• 1954
  • 1954-02-22 DE DEW13317A patent/DE1034222B/de active Pending
  • 1954-02-26 GB GB5711/54A patent/GB755335A/en not_active Expired
  • 1954-02-26 GB GB17554/55A patent/GB755419A/en not_active Expired
  • 1954-03-02 JP JP396554A patent/JPS367807B1/ja active Pending
  • 1954-03-04 FR FR1098898D patent/FR1098898A/fr not_active Expired
  • 1954-03-05 CH CH334162D patent/CH334162A/fr unknown
• 1964
  • 1964-05-12 NL NL6405250A patent/NL6405250A/xx unknown

Also Published As

Similar Documents