JPS5514768A - Starting system for terminal unit - Google Patents

Starting system for terminal unit

Info

Publication number
JPS5514768A
JPS5514768A JP8786178A JP8786178A JPS5514768A JP S5514768 A JPS5514768 A JP S5514768A JP 8786178 A JP8786178 A JP 8786178A JP 8786178 A JP8786178 A JP 8786178A JP S5514768 A JPS5514768 A JP S5514768A
Authority
JP
Japan
Prior art keywords
terminal
incoming
tela
exa
spt
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
JP8786178A
Other languages
Japanese (ja)
Inventor
Keiichi Takano
Yoichi Shin
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.)
NEC Corp
NTT Inc
Original Assignee
NEC Corp
Nippon Telegraph and Telephone Corp
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 NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8786178A priority Critical patent/JPS5514768A/en
Publication of JPS5514768A publication Critical patent/JPS5514768A/en
Pending legal-status Critical Current

Links

Classifications

    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To realize both the power supply from the channel and the insulation test by installing the diode and the Zener diode to the connection circuit of the terminal unit plus the terminal starting power source to the terminal starting circuit of the exchange each and thus distinguishing the telephone incoming from the terminal originating. CONSTITUTION:Zener diode Z and diode RCT are connected to the circuit which connects exchange EXA to terminal unit TRM connected in parallel to telepone set TELA. At the same time, the terminal starting power source is installed at the starting circuit part of the terminal unit of terminal control unit SPT connected to EXA. Then apart from the power source of incoming trunk ICT, the incoming of TELA when EXA is started by SPT is distinguished from the originating of ICT. Thus only TELA is called out at the telephone incoming time, and only SPT is started in the case of the incoming of the terminal respectively.
JP8786178A 1978-07-18 1978-07-18 Starting system for terminal unit Pending JPS5514768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8786178A JPS5514768A (en) 1978-07-18 1978-07-18 Starting system for terminal unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8786178A JPS5514768A (en) 1978-07-18 1978-07-18 Starting system for terminal unit

Publications (1)

Publication Number Publication Date
JPS5514768A true JPS5514768A (en) 1980-02-01

Family

ID=13926658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8786178A Pending JPS5514768A (en) 1978-07-18 1978-07-18 Starting system for terminal unit

Country Status (1)

Country Link
JP (1) JPS5514768A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007116609A (en) * 2005-10-24 2007-05-10 Murata Mfg Co Ltd Coil antenna structure and portable electronic device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52415A (en) * 1975-06-21 1977-01-05 Fuji Photo Film Co Ltd Film pack equipped with engaging section for seal-opening

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52415A (en) * 1975-06-21 1977-01-05 Fuji Photo Film Co Ltd Film pack equipped with engaging section for seal-opening

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007116609A (en) * 2005-10-24 2007-05-10 Murata Mfg Co Ltd Coil antenna structure and portable electronic device

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