GB310029A - Improvements relating to telephone systems - Google Patents

Improvements relating to telephone systems

Info

Publication number
GB310029A
GB310029A GB10226/29A GB1022629A GB310029A GB 310029 A GB310029 A GB 310029A GB 10226/29 A GB10226/29 A GB 10226/29A GB 1022629 A GB1022629 A GB 1022629A GB 310029 A GB310029 A GB 310029A
Authority
GB
United Kingdom
Prior art keywords
energizes
magnet
over
type
tone
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
GB10226/29A
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.)
CHARLES SAMUEL BLEICHER
Original Assignee
CHARLES SAMUEL BLEICHER
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 CHARLES SAMUEL BLEICHER filed Critical CHARLES SAMUEL BLEICHER
Publication of GB310029A publication Critical patent/GB310029A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L19/00—Apparatus or local circuits for step-by-step systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Prepayment Telephone Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Mobile Radio Communication Systems (AREA)
GB10226/29A 1928-04-21 1929-04-02 Improvements relating to telephone systems Expired GB310029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT310029X 1928-04-21

Publications (1)

Publication Number Publication Date
GB310029A true GB310029A (en) 1930-07-02

Family

ID=3671324

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10226/29A Expired GB310029A (en) 1928-04-21 1929-04-02 Improvements relating to telephone systems

Country Status (5)

Country Link
US (1) US1827962A (es)
BE (1) BE358479A (es)
DE (1) DE540138C (es)
GB (1) GB310029A (es)
NL (1) NL27090C (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE761948C (de) * 1940-04-10 1954-02-08 Siemens & Halske A G Durch Impulskombinationen, insbesondere telegrafische Impulskombinationen, gesteuerte Waehlereinrichtung zur Verbindungsherstellung

Also Published As

Publication number Publication date
US1827962A (en) 1931-10-20
BE358479A (es)
DE540138C (de) 1931-12-08
NL27090C (es)

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