JPS61118053A - リングトリツプ回路 - Google Patents

リングトリツプ回路

Info

Publication number
JPS61118053A
JPS61118053A JP24004984A JP24004984A JPS61118053A JP S61118053 A JPS61118053 A JP S61118053A JP 24004984 A JP24004984 A JP 24004984A JP 24004984 A JP24004984 A JP 24004984A JP S61118053 A JPS61118053 A JP S61118053A
Authority
JP
Japan
Prior art keywords
voltage
circuit
ringer
ringing
superimposed
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
JP24004984A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0327138B2 (enrdf_load_stackoverflow
Inventor
Minoru Sueno
末野　実
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
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP24004984A priority Critical patent/JPS61118053A/ja
Publication of JPS61118053A publication Critical patent/JPS61118053A/ja
Publication of JPH0327138B2 publication Critical patent/JPH0327138B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)
JP24004984A 1984-11-14 1984-11-14 リングトリツプ回路 Granted JPS61118053A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24004984A JPS61118053A (ja) 1984-11-14 1984-11-14 リングトリツプ回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24004984A JPS61118053A (ja) 1984-11-14 1984-11-14 リングトリツプ回路

Publications (2)

Publication Number Publication Date
JPS61118053A true JPS61118053A (ja) 1986-06-05
JPH0327138B2 JPH0327138B2 (enrdf_load_stackoverflow) 1991-04-15

Family

ID=17053712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24004984A Granted JPS61118053A (ja) 1984-11-14 1984-11-14 リングトリツプ回路

Country Status (1)

Country Link
JP (1) JPS61118053A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0296450A (ja) * 1988-09-30 1990-04-09 Fujitsu Ltd リングトリップ回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0296450A (ja) * 1988-09-30 1990-04-09 Fujitsu Ltd リングトリップ回路

Also Published As

Publication number Publication date
JPH0327138B2 (enrdf_load_stackoverflow) 1991-04-15

Similar Documents

Publication Publication Date Title
JPS61118053A (ja) リングトリツプ回路
JPH0131360B2 (enrdf_load_stackoverflow)
JPH06232966A (ja) 電話機加入者端末のオフフックの検知方法とその装置
JPS58207755A (ja) 極性反転検知回路
US4001708A (en) Code-controlled ringer attachment for telephones including a-peak-to-peak gain controlled amplifier
JP2642446B2 (ja) リングトリップ回路
JPS6080352A (ja) 誤スキヤン防止回路
JP2833742B2 (ja) リングトリップ回路
JPS59230357A (ja) デイジタル処理形呼出応答検出回路
JPH0413906B2 (enrdf_load_stackoverflow)
JP2000050321A (ja) ２線式加入者回路の障害検出回路
JPS59169260A (ja) ライン回路
US20040076286A1 (en) Telephone circuit with a small, low-power ring trip monitor
JPH08307485A (ja) 電話機の回線電流検出回路
JPH06188972A (ja) リングトリップ回路
JPS5869155A (ja) 押しボタン式ｄｐ信号送出ダイヤル回路のパワ−オンリセツト回路
JPH0340547B2 (enrdf_load_stackoverflow)
JPS6269759A (ja) 電話交換機のオフフツク状態検出回路
JPH0339428B2 (enrdf_load_stackoverflow)
JPS59111450A (ja) 通話電流供給方式
JPH08163609A (ja) ループ検出信号送出回路
JPS62109462A (ja) リングトリツプ回路
JPS6192123A (ja) 地絡検出保護回路
JPS6145664A (ja) リングトリツプ回路
JPS6059848A (ja) 応答検出回路