GB258025A - Improvements in and relating to telephone systems - Google Patents

Improvements in and relating to telephone systems

Info

Publication number
GB258025A
GB258025A GB1610425A GB1610425A GB258025A GB 258025 A GB258025 A GB 258025A GB 1610425 A GB1610425 A GB 1610425A GB 1610425 A GB1610425 A GB 1610425A GB 258025 A GB258025 A GB 258025A
Authority
GB
United Kingdom
Prior art keywords
relay
switchhook
contacts
meter
winding
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
Application number
GB1610425A
Other languages
English (en)
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.)
AMERICAN TELECHRONOMETER COMPA
Original Assignee
AMERICAN TELECHRONOMETER COMPA
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 AMERICAN TELECHRONOMETER COMPA filed Critical AMERICAN TELECHRONOMETER COMPA
Priority to GB1610425A priority Critical patent/GB258025A/en
Priority to FR600183D priority patent/FR600183A/fr
Publication of GB258025A publication Critical patent/GB258025A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
GB1610425A 1925-06-22 1925-06-22 Improvements in and relating to telephone systems Expired GB258025A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1610425A GB258025A (en) 1925-06-22 1925-06-22 Improvements in and relating to telephone systems
FR600183D FR600183A (fr) 1925-06-22 1925-06-24 Perfectionnements aux systèmes téléphoniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1610425A GB258025A (en) 1925-06-22 1925-06-22 Improvements in and relating to telephone systems

Publications (1)

Publication Number Publication Date
GB258025A true GB258025A (en) 1926-09-16

Family

ID=10071248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1610425A Expired GB258025A (en) 1925-06-22 1925-06-22 Improvements in and relating to telephone systems

Country Status (2)

Country Link
FR (1) FR600183A (fr)
GB (1) GB258025A (fr)

Also Published As

Publication number Publication date
FR600183A (fr) 1926-02-01

Similar Documents

Publication Publication Date Title
GB258025A (en) Improvements in and relating to telephone systems
GB434634A (en) Improvements in or relating to telephone systems adapted for recording and reproducing the transmissions
US1551319A (en) oe beelin
GB498520A (en) Improvements in and relating to telephone installations
GB258547A (en) Improvements in automatic telephone systems
US2602119A (en) Pay station time signal
US1506125A (en) Telephone system
US1462252A (en) Telephone-signal-allotting system
US1312795A (en) Telephone-exchange system
US1654923A (en) Telephone system
US1566622A (en) William g
US1739178A (en) Automatic telephone system
US1312768A (en) Telephone-exchange system
US1105436A (en) Police and fire alarm system.
US1232496A (en) Call-distributing system.
USRE15706E (en) Two-wire party-line lockout telephone system
US1484134A (en) Telephone system
US1556842A (en) Telephone system
US1494555A (en) Telephone system
GB169443A (en) Improvements in or relating to telephone systems
US1256698A (en) Telephone-exchange system.
US897238A (en) Telephone system
US1174262A (en) Telephone system.
GB334534A (en) Improvements in or relating to telephone systems
US897239A (en) Telephone system