Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M3/00—Automatic or semi-automatic exchanges
  • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
  • H04M15/04—Recording calls, or communications in printed, perforated or other permanent form
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
  • H04M15/08—Metering calls to called party, i.e. B-party charged for the communication
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M3/00—Automatic or semi-automatic exchanges
  • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
  • H04M3/62—Keyboard equipment
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M3/00—Automatic or semi-automatic exchanges
  • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
  • H04M3/64—Arrangements for signalling the number or class of the calling line to the operator
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q3/00—Selecting arrangements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q3/00—Selecting arrangements
  • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Computer Networks & Wireless Communication (AREA)
• Telephonic Communication Services (AREA)
• Meter Arrangements (AREA)
• Exchange Systems With Centralized Control (AREA)
• Selective Calling Equipment (AREA)
• Monitoring And Testing Of Transmission In General (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10277091

Family Applications (4)

Family Applications Before (1)

Family Applications After (2)

Country Status (7)

Families Citing this family (1)

Family Cites Families (2)

• 0
  • BE BE476939D patent/BE476939A/xx unknown
  • BE BE476759D patent/BE476759A/xx unknown
  • BE BE480488D patent/BE480488A/xx unknown
  • BE BE476048D patent/BE476048A/xx unknown
  • NL NL75429D patent/NL75429C/xx active
  • FR FR962115D patent/FR962115A/fr not_active Expired
  • NL NL72119D patent/NL72119C/xx active
• 1946
  • 1946-03-09 GB GB9407/47A patent/GB642541A/en not_active Expired
  • 1946-03-09 GB GB7405/46A patent/GB642527A/en not_active Expired
  • 1946-03-09 GB GB9408/47A patent/GB642542A/en not_active Expired
  • 1946-03-09 GB GB7046/46A patent/GB642528A/en not_active Expired
• 1947
  • 1947-08-06 US US766636A patent/US2633501A/en not_active Expired - Lifetime
  • 1947-08-12 CH CH285306D patent/CH285306A/fr unknown
  • 1947-08-12 CH CH291943D patent/CH291943A/fr unknown
  • 1947-08-16 CH CH289546D patent/CH289546A/fr unknown
  • 1947-09-08 ES ES179632A patent/ES179632A1/es not_active Expired
  • 1947-10-11 FR FR57780D patent/FR57780E/fr not_active Expired
  • 1947-10-17 CH CH296198D patent/CH296198A/fr unknown
  • 1947-10-17 FR FR66206D patent/FR66206E/fr not_active Expired
  • 1947-10-23 FR FR66301D patent/FR66301E/fr not_active Expired

Also Published As

Similar Documents