PH20174A - Automatic telephone system provided with means of protection against in international interruption during register signalling - Google Patents

Automatic telephone system provided with means of protection against in international interruption during register signalling

Info

Publication number
PH20174A
PH20174A PH18638A PH18638A PH20174A PH 20174 A PH20174 A PH 20174A PH 18638 A PH18638 A PH 18638A PH 18638 A PH18638 A PH 18638A PH 20174 A PH20174 A PH 20174A
Authority
PH
Philippines
Prior art keywords
international
protection against
system provided
telephone system
automatic telephone
Prior art date
Application number
PH18638A
Inventor
Karl Gustav Gosta Vil Redelius
Original Assignee
Ericsson Telefon Ab L M
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 claimed from SE7508728A external-priority patent/SE387812B/en
Priority claimed from SE7508729A external-priority patent/SE387813B/en
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of PH20174A publication Critical patent/PH20174A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Telephone Function (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)
PH18638A 1975-08-01 1976-07-01 Automatic telephone system provided with means of protection against in international interruption during register signalling PH20174A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7508728A SE387812B (en) 1975-08-01 1975-08-01 AUTOMATIC TELEPHONE SYSTEM PROVIDED WITH PROTECTION AGAINST INTERRUPTED DISORDERS IN REGISTER SIGNALING
SE7508729A SE387813B (en) 1975-08-01 1975-08-01 AUTOMATIC TELEPHONE SYSTEM INTENDED WITH PROTECTION AGAINST INTERRUPTED DISORDERS IN REGISTER SIGNALING

Publications (1)

Publication Number Publication Date
PH20174A true PH20174A (en) 1986-10-14

Family

ID=26656645

Family Applications (1)

Application Number Title Priority Date Filing Date
PH18638A PH20174A (en) 1975-08-01 1976-07-01 Automatic telephone system provided with means of protection against in international interruption during register signalling

Country Status (8)

Country Link
JP (1) JPS5910634B2 (en)
BR (1) BR7604795A (en)
DE (1) DE2630604A1 (en)
EG (1) EG13231A (en)
FR (1) FR2320019A1 (en)
GB (1) GB1531296A (en)
IT (1) IT1062461B (en)
PH (1) PH20174A (en)

Also Published As

Publication number Publication date
IT1062461B (en) 1984-10-10
FR2320019A1 (en) 1977-02-25
DE2630604A1 (en) 1977-02-17
JPS5219013A (en) 1977-01-14
GB1531296A (en) 1978-11-08
AU1557276A (en) 1978-01-12
BR7604795A (en) 1977-08-02
FR2320019B1 (en) 1982-10-22
JPS5910634B2 (en) 1984-03-10
EG13231A (en) 1980-10-31

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