GB328324A - Improvements in or relating to call recording apparatus for use in telephone systems - Google Patents

Improvements in or relating to call recording apparatus for use in telephone systems

Info

Publication number
GB328324A
GB328324A GB274829A GB274829A GB328324A GB 328324 A GB328324 A GB 328324A GB 274829 A GB274829 A GB 274829A GB 274829 A GB274829 A GB 274829A GB 328324 A GB328324 A GB 328324A
Authority
GB
United Kingdom
Prior art keywords
relay
armature
wheels
subscriber
line
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
GB274829A
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 BE358558D priority Critical patent/BE358558A/xx
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Priority to GB274829A priority patent/GB328324A/en
Publication of GB328324A publication Critical patent/GB328324A/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
    • H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
GB274829A 1929-01-26 1929-01-26 Improvements in or relating to call recording apparatus for use in telephone systems Expired GB328324A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE358558D BE358558A (nl) 1929-01-26
GB274829A GB328324A (en) 1929-01-26 1929-01-26 Improvements in or relating to call recording apparatus for use in telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB274829A GB328324A (en) 1929-01-26 1929-01-26 Improvements in or relating to call recording apparatus for use in telephone systems

Publications (1)

Publication Number Publication Date
GB328324A true GB328324A (en) 1930-04-28

Family

ID=9745134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB274829A Expired GB328324A (en) 1929-01-26 1929-01-26 Improvements in or relating to call recording apparatus for use in telephone systems

Country Status (2)

Country Link
BE (1) BE358558A (nl)
GB (1) GB328324A (nl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029661A1 (de) * 1980-08-05 1982-03-04 Siemens AG, 1000 Berlin und 8000 München Verfahren zur uebertragung einer bei einem fernsprechteilnehmer sichtbar zu machenden information ueber den anderen an der betreffenden verbindung beteiligten fernsprechteilnehmer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029661A1 (de) * 1980-08-05 1982-03-04 Siemens AG, 1000 Berlin und 8000 München Verfahren zur uebertragung einer bei einem fernsprechteilnehmer sichtbar zu machenden information ueber den anderen an der betreffenden verbindung beteiligten fernsprechteilnehmer

Also Published As

Publication number Publication date
BE358558A (nl)

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