JPS60107966A - 端末接続回路 - Google Patents

端末接続回路

Info

Publication number
JPS60107966A
JPS60107966A JP21501783A JP21501783A JPS60107966A JP S60107966 A JPS60107966 A JP S60107966A JP 21501783 A JP21501783 A JP 21501783A JP 21501783 A JP21501783 A JP 21501783A JP S60107966 A JPS60107966 A JP S60107966A
Authority
JP
Japan
Prior art keywords
voltage
transistor
analog switch
telephone line
terminal device
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.)
Granted
Application number
JP21501783A
Other languages
English (en)
Japanese (ja)
Other versions
JPS637068B2 (enrdf_load_stackoverflow
Inventor
Kuniaki Okada
邦明 岡田
Yuzo Tsuruta
鶴田　勇三
Fukue Ogawa
尾川　福重
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.)
Toshiba Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Toshiba Corp
Nippon Telegraph and Telephone Corp
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 Toshiba Corp, Nippon Telegraph and Telephone Corp filed Critical Toshiba Corp
Priority to JP21501783A priority Critical patent/JPS60107966A/ja
Publication of JPS60107966A publication Critical patent/JPS60107966A/ja
Publication of JPS637068B2 publication Critical patent/JPS637068B2/ja
Granted 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
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP21501783A 1983-11-17 1983-11-17 端末接続回路 Granted JPS60107966A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21501783A JPS60107966A (ja) 1983-11-17 1983-11-17 端末接続回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21501783A JPS60107966A (ja) 1983-11-17 1983-11-17 端末接続回路

Publications (2)

Publication Number Publication Date
JPS60107966A true JPS60107966A (ja) 1985-06-13
JPS637068B2 JPS637068B2 (enrdf_load_stackoverflow) 1988-02-15

Family

ID=16665343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21501783A Granted JPS60107966A (ja) 1983-11-17 1983-11-17 端末接続回路

Country Status (1)

Country Link
JP (1) JPS60107966A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS637068B2 (enrdf_load_stackoverflow) 1988-02-15

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