JPS56165480A - Originating connection system for entrusted public telephone circuit of coin throw-in type - Google Patents

Originating connection system for entrusted public telephone circuit of coin throw-in type

Info

Publication number
JPS56165480A
JPS56165480A JP6884380A JP6884380A JPS56165480A JP S56165480 A JPS56165480 A JP S56165480A JP 6884380 A JP6884380 A JP 6884380A JP 6884380 A JP6884380 A JP 6884380A JP S56165480 A JPS56165480 A JP S56165480A
Authority
JP
Japan
Prior art keywords
line
fpt
tln
lin
suba
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.)
Pending
Application number
JP6884380A
Other languages
Japanese (ja)
Inventor
Osao Taguchi
Seiichi Kanao
Akio Yamazaki
Toshiaki Suzuki
Takashi Murakami
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Nippon Electric Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP6884380A priority Critical patent/JPS56165480A/en
Publication of JPS56165480A publication Critical patent/JPS56165480A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Prepayment Telephone Systems (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To realize a direct call to a called subscriber without requiring the key operation of a truster, by switching the connection during in answer of a called subscriber from a talking line to a reversed polarity line when an originating connection is executed from a coin throuw-in type entrusted public telephone to an emergency report line. CONSTITUTION:A calling subscriber picks up a handset and dials the emergency report request number after throwing in the coins. Thus an emergency report trunk FPT is connected in a route of calling subscriber SUBA (A) line-LIN-TLN- FPT (A) line-called subscriber SUBB (B) line-FPT (B) line-TLN-LIN- SUBA (B) line. With an answer of the subscriber SUBB, a central processer CC switches connection for the call line like SUBA (A) line-LIN-TLN-FPT (C) line-SUBB (B) line-FPT (D) line-TLN-LIN-SUBA (B) line. Then the signals of the (A) line earth and the (B) line battery are transmitted to the public telephone of the calling subscriber. And a short circuit of the telephone receiver part is cancelled in the acceptable state of coin to permit talking.
JP6884380A 1980-05-26 1980-05-26 Originating connection system for entrusted public telephone circuit of coin throw-in type Pending JPS56165480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6884380A JPS56165480A (en) 1980-05-26 1980-05-26 Originating connection system for entrusted public telephone circuit of coin throw-in type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6884380A JPS56165480A (en) 1980-05-26 1980-05-26 Originating connection system for entrusted public telephone circuit of coin throw-in type

Publications (1)

Publication Number Publication Date
JPS56165480A true JPS56165480A (en) 1981-12-19

Family

ID=13385370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6884380A Pending JPS56165480A (en) 1980-05-26 1980-05-26 Originating connection system for entrusted public telephone circuit of coin throw-in type

Country Status (1)

Country Link
JP (1) JPS56165480A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1245970A2 (en) 2001-03-28 2002-10-02 Dai Nippon Printing Co., Ltd. Circular polarization controlling optical element and method of producing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51100608A (en) * 1975-03-03 1976-09-06 Tamura Electric Works Ltd KOSHUDENWAKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51100608A (en) * 1975-03-03 1976-09-06 Tamura Electric Works Ltd KOSHUDENWAKI

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1245970A2 (en) 2001-03-28 2002-10-02 Dai Nippon Printing Co., Ltd. Circular polarization controlling optical element and method of producing the same

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