GB630408A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB630408A
GB630408A GB2795247A GB2795247A GB630408A GB 630408 A GB630408 A GB 630408A GB 2795247 A GB2795247 A GB 2795247A GB 2795247 A GB2795247 A GB 2795247A GB 630408 A GB630408 A GB 630408A
Authority
GB
United Kingdom
Prior art keywords
repeater
junction
register
over
relay
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
GB2795247A
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.)
Individual
Original Assignee
Individual
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
Priority to BE477086D priority Critical patent/BE477086A/xx
Application filed by Individual filed Critical Individual
Priority to GB2795247A priority patent/GB630408A/en
Publication of GB630408A publication Critical patent/GB630408A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
GB2795247A 1946-11-02 1946-11-02 Improvements in or relating to telephone systems Expired GB630408A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE477086D BE477086A (enrdf_load_stackoverflow) 1946-11-02
GB2795247A GB630408A (en) 1946-11-02 1946-11-02 Improvements in or relating to telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2795247A GB630408A (en) 1946-11-02 1946-11-02 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB630408A true GB630408A (en) 1949-10-12

Family

ID=10267909

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2795247A Expired GB630408A (en) 1946-11-02 1946-11-02 Improvements in or relating to telephone systems

Country Status (2)

Country Link
BE (1) BE477086A (enrdf_load_stackoverflow)
GB (1) GB630408A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE477086A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US2063354A (en) Selective calling circuits
GB630408A (en) Improvements in or relating to telephone systems
US3731000A (en) Equipment for switching calls from remote trunk groups to distant centralized operator service center
US2447494A (en) Telephone register control system
US3740484A (en) Call distributing system
US2858420A (en) Simplex radio telephone system
US3524941A (en) Telephone exchange system with facility for short identification code dialing
USRE19741E (en) Telephone system
US1881273A (en) Telephone system
US2358185A (en) Telephone system
US2298751A (en) Telephone system
US2512942A (en) All relay telephone selector
US2367635A (en) Telephone system
US2071072A (en) Signaling system
US2351766A (en) Telephone system
US2033283A (en) Signaling system
US2029723A (en) Signaling system
US2686223A (en) Combined toll and local connector
US2060250A (en) Combined teleprinter and telephone system
US2058216A (en) Signaling system
US2448428A (en) Intercommunicating telephone system
US2232362A (en) Selective signaling system
US2707211A (en) Adapter circuit
US2897273A (en) Automatic toll ticketing telephone system
US2228392A (en) Telephone system